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| 1 | 扩散火焰合成碳纳米管研究显示文摘利用扩散火焰合成碳纳米管是一项新的技术和方法。介绍了这种新方法的基本原理 ,较系统地研究了火焰参数、基板材料、合成时间等对碳纳米管形态的影响。初步研究表明它在无外加催化剂的情况下也能合成碳纳米管 ,具有“自生催化” | 潘春旭 Liming Yuan Kozo Saito | 2001 | 新型炭材料2001，16，3： | 38 |
| 2 | A chlorinated copolymer donor demonstrates a 18.13% power conversion efficiency显示文摘The rapid development of low-bandgap(LBG)nonfullerene acceptors and wide-bandgap(WBG)copolymer donors in recent years has boosted the power conversion efficiency(PCE)of organic solar cells(OSCs)to the 18%level[1−21].The commercialization of OSCs is highly expected.However,critical issues like the cost and the stability also determine whether OSCs can enter the market or not[22]. | Jianqiang Qin Lixiu Zhang Chuantian Zuo Zuo Xiao Yongbo Yuan Shangfeng Yang Feng Hao Ming Cheng Kuan Sun Qinye Bao Zhengyang Bin Zhiwen Jin and Liming Ding | 2021 | Journal of Semiconductors2021，42，1： | 19 |
| 3 | A carbon-oxygen-bridged ladder-type building block for efficient donor and acceptor materials used in organic solar cells显示文摘A carbon-oxygen-bridged ladder-type donor unit(CO5) was invented and prepared via an ‘‘intramolecular demethanolization cyclization' approach. Its single crystal structure indicates enhanced planarity compared with the carbon-bridged analogue indacenodithiophene(IDT). Owing to the stronger electron-donating capability of CO5 than IDT, CO5-based donor and acceptor materials show narrower bandgaps. A donor-acceptor(D-A) copolymer donor(PCO5TPD) and an A-D-A nonfullerene acceptor(CO5IC) demonstrated higher performance than IDT-based counterparts, PIDTTPD and IDTIC, respectively. The better performance of CO5-based materials results from their stronger light-harvesting capability and higher charge-carrier mobilities. | Zuo Xiao Fan Liu Xinjian Geng Jianqi Zhang Shizhe Wang Yujun Xie Zhen Li Huai Yang Yongbo Yuan Liming Ding | 2017 | Science Bulletin2017，62，19： | 16 |
| 4 | Progress of the key materials for organic solar cells显示文摘Organic solar cells have attracted academic and industrial interests due to the advantages like lightweight,flexibility and roll-to-roll fabrication.Nowadays,18%power conversion efficiency has been achieved in the state-of-the-art organic solar cells.The recent rapid progress in organic solar cells relies on the continuously emerging new materials and device fabrication technologies,and the deep understanding on film morphology,molecular packing and device physics.Donor and acceptor materials are the key materials for organic solar cells since they determine the device performance.The past 25 years have witnessed an odyssey in developing high-performance donors and acceptors.In this review,we focus on those star materials and milestone work,and introduce the molecular structure evolution of key materials.These key materials include homopolymer donors,D-A copolymer donors,A-D-A small molecular donors,fullerene acceptors and nonfullerene acceptors.At last,we outlook the challenges and very important directions in key materials development. | Yang Tong Zuo Xiao Xiaoyan Du Chuantian Zuo Yuelong Li Menglan Lv Yongbo Yuan Chenyi Yi Feng Hao Yong Hua Ting Lei Qianqian Lin Kuan Sun Dewei Zhao Chunhui Duan Xiangfeng Shao Wei Li Hin-Lap Yip Zhengguo Xiaol Bin Zhang Qingzhen Bian Yuanhang Cheng Shengjian Liu Ming Cheng Zhiwen Jin Shangfeng Yang Liming Ding | 2020 | Science China Chemistry2020，63，6： | 15 |
| 5 | Induced J-aggregation in acceptor alloy enhances photocurrent显示文摘Carbon-oxygen-bridged (CO-bridged) ladder-type units already proved to be promising electron-donating building blocks for making acceptor-donor-acceptor (A-D-A) nonfullerene acceptors [1].Compared with traditional carbon-bridged (C-bridged) units, CObridged units present stronger electron-donating capability due to electron-rich oxygen atoms. | Ling Liu Qishi Liu Zuo Xiao Shangfeng Yang Yongbo Yuan Liming Ding | 2019 | Science Bulletin2019，64，15： | 13 |
| 6 | Determination of velocity correction factors for real-time air velocity monitoring in underground mines显示文摘 | Lihong Zhou Liming Yuan Rick Thomas Anthony Iannacchione | 2017 | International Journal of Coal Science & Technology2017，4，4： | 13 |
| 7 | Insight-HXMT observations of the first binary neutron star merger GW170817显示文摘Finding the electromagnetic(EM) counterpart of binary compact star merger, especially the binary neutron star(BNS) merger,is critically important for gravitational wave(GW) astronomy, cosmology and fundamental physics. On Aug. 17, 2017,Advanced LIGO and Fermi/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart,GRB 170817 A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope(HE) onboard Insight-HXMT(Hard X-ray Modulation Telescope) is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart(SSS17 a/AT2017 gfo) with very large collection area(~1000 cm^2) and microsecond time resolution in 0.2-5 MeV. In addition,Insight-HXMT quickly implemented a Target of Opportunity(ToO) observation to scan the GW localization area for potential X-ray emission from the GW source. Although Insight-HXMT did not detect any significant high energy(0.2-5 MeV) radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817 A. Meanwhile,Insight-HXMT/HE provides one of the most stringent constraints(~10^(-7) to 10^(-6) erg/cm^2/s) for both GRB170817 A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of Insight-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event. | TiPei Li ShaoLin Xiong ShuangNan Zhang FangJun Lu LiMing Song XueLei Cao Zhi Chang Gang Chen Li Chen TianXiang Chen Yong Chen YiBao Chen YuPeng Chen Wei Cui WeiWei Cui JingKang Deng YongWei Dong YuanYuan Du MinXue Fu GuanHua Gao He Gao Min Gao MingYu Ge YuDong Gu Ju Guan ChengCheng Guo DaWei Han Wei Hu Yue Huang Jia Huo ShuMei Jia LuHua Jiang WeiChun Jiang Jing Jin YongJie Jin Bing Li ChengKui Li Gang Li MaoShun Li Wei Li Xian Li XiaoBo Li XuFang Li YanGuo Li ZiJian Li ZhengWei Li XiaoHua Liang JinYuan Liao CongZhan Liu GuoQing Liu HongWei Liu ShaoZhen Liu XiaoJing Liu Yuan Liu YiNong Liu Bo Lu XueFeng Lu Tao Luo Xiang Ma Bin Meng Yi Nang JianYin Nie Ge OU JinLu Qu Na Sai Liang Sun Yin Tan Lian Tao WenHui Tao YouLi Tuo GuoFeng Wang HuanYu Wang Juan Wang WenShuai Wang YuSa Wang XiangYang Wen BoBing WU Mei Wu GuangCheng Xiao He Xu YuPeng Xu LinLi Yan JiaWei Yang Sheng Yang YanJi Yang AiMei Zhang ChunLei Zhang ChengMo Zhang Fan Zhang HongMei Zhang Juan Zhang Qiang Zhang Shu Zhang Tong Zhang Wei Zhang WanChang Zhang WenZhao Zhang Yi Zhang Yue Zhang YiFei Zhang YongJie Zhang Zhao Zhang ZiLiang Zhang HaiSheng Zhao JianLing Zhao XiaoFan Zhao ShiJie Zheng Yue Zhu YuXuan Zhu ChangLin Zou | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，3： | 12 |
| 8 | A two-terminal all-inorganic perovskite/organic tandem solar cell显示文摘Organic-inorganic lead halide perovskite solar cells(PSCs)have been marching rapidly in recent years with power conversion efficiency(PCE)boosting from 3.8%to 24.2%(NREL Best Research-Cell Efficiency Chart,http://gffzz8798726073dc471csn6kpcnn09bnf695k.ffgz.tsg.suse.edu.cn/pv/cell-effi ciency.html,Accessed April 2019).However,these solar cells are not stable at high temperatures due to volatile organic cations[1].Allinorganic perovskites with cesium cation like CsPbI1-xBrx present high thermal stabilities[2].By partially replacing I-with Br-,the bandgap for CsPbI1-xBrx can be tuned from 1.73 to 2.36 eV. | Qiang Zeng Ling Liu Zuo Xiao Fangyang Liu Yong Hua Yongbo Yuan Liming Ding | 2019 | Science Bulletin2019，64，13： | 10 |
| 9 | Challenges and Solutions for the Additive Manufacturing of H) Biodegradable Magnesium Implants显示文摘Due to their capability of fabricating geometrically complex structures,additive manufacturing(AM)techniques have provided unprecedented opportunities to produce biodegradable metallic implants—especially using Mg alloys,which exhibit appropriate mechanical properties and outstanding biocompatibility.However,many challenges hinder the fabrication of AM-processed biodegradable Mg-based implants,such as the difficulty of Mg powder preparation,powder splash,and crack formation during the AM process.In the present work,the challenges of AM-processed Mg components are analyzed and solutions to these challenges are proposed.A novel Mg-based alloy(Mg-Nd-Zn-Zr alloy,JDBM)powder with a smooth surface and good roundness was first synthesized successfully,and the AM parameters for Mg-based alloys were optimized.Based on the optimized parameters,porous JDBM scaffolds with three different architectures(biomimetic,diamond,and gyroid)were then fabricated by selective laser melting(SLM),and their mechanical properties and degradation behavior were evaluated.Finally,the gyroid scaffolds with the best performance were selected for dicalcium phosphate dihydrate(DCPD)coating treatment,which greatly suppressed the degradation rate and increased the cytocompatibility,indicating a promising prospect for clinical application as bone tissue engineering scaffolds. | Yinchuan Wang Penghuai Fu Nanqing Wang Liming Peng Bin Kang Hui Zeng Guangyin Yuan Wenjiang Ding | 2020 | Engineering2020，6，11： | 10 |
| 10 | Facile and Scalable Preparation of Fluorescent Carbon Dots for Multifunctional Applications显示文摘 | Dan Wang Zhiyong Wang Qiuqiang Zhan Yuan Pu Jie-xin wang Neil R. Foster Liming Dai | 2017 | Engineering2017，3，3： | 9 |
| 11 | High-Resolution Genome-wide Association Study Identifies Genomic Regions and Candidate Genes for Important Agronomic Traits in Wheat显示文摘Wheat(Triticum aestivum)is a major staple food crop worldwide.Genetic dissection of important agronomic traits is essential for continuous improvement of wheat yield to meet the demand of the world's growing population.We conducted a large-scale genome-wide association study(GWAS)using a panel of 768 wheat cultivars that were genotyped with 327609 single-nucleotide polymorphisms generated by genotyping-by-sequencing and detected 395 quantitative trait loci(QTLs)for 12 traits under 7 environments.Among them,273 QTLs were delimited to≤1.0-Mb intervals and 7 of them are either known genes(Rht-D,Vrn-B1,and Vrn-D1)that have been cloned or known QTLs(TaGA2ox8,APO1,TaSus1-7B,and Rht12)that were previously mapped.Eight putative candidate genes were identified for three QTLs that enhance spike seed setting and grain size using gene expression data and were validated in three bi-parental populations.Protein sequence analysis identified 33 putative wheat orthologs that have high identity with rice genes in QTLs affecting similar traits.Large r^2 values for additive effects observed among the QTLs for most traits indicated that the phenotypes of these identified QTLs were highly predictable.Results from this study demonstrated that significantly increasing GWAS population size and marker density greatly improves detection and identification of candidate genes underlying a QTL,solidifying the foundation for large-scale QTL fine mapping,candidate gene validation,and developing functional markers for genomics-based breeding in wheat. | Yunlong Pang Chunxia Liu Danfeng Wang Paul St.Amand Amy Bernardo Wenhui Li Fang He Linzhi Li Liming Wang Xiufang Yuan Lei Dong Yu Su Huirui Zhang Meng Zhao Yunlong Liangi Hongze Jia Xitong Shen Yue Lu Hongming Jiang Yuye Wu Anfei Li Honggang Wang Lingrang Kong Guihua Bai Shubing Liu | 2020 | Molecular Plant2020，13，9： | 8 |
| 12 | Microwave Absorption and Shielding Property of Composites with FeSiAl and Carbonous Materials as Filler显示文摘Silicone rubber composites filled with FeSiAl alloys and multi-walled carbon nanotubes(MWCNT)/graphite have been prepared for the first time by a coating process.The complex permittivity and permeability of the composites were measured with a vector network analyzer in a 1-4 GHz frequency range,and the DC electric conductivity was measured by a standard four-point contact method.These parameters were then used to calculate the reflection loss(RL) and shielding effectiveness(SE) of the composites.The results showed that the added MWCNT increased the permittivity and permeability of composites in the L-band,while the added graphite increased only the permittivity.The variation lies in the interactions between two carbonous absorbents.Addition of 1 wt% MWCNT enhanced the RL in the L-band(minimum 5.7 dB at 1 mm,7.3 dB at 1.5 mm),while the addition of graphite did not.Addition of MWCNT as well as graphite reinforced the shielding property of the composites(maximum SE 13.3 dB at 1 mm,18.3 dB at 1.5 mm) owing to the increase of conductivity.The addition of these carbonous materials could hold the promise of enforcing the absorption and shielding property of the absorbers. | Wenqiang Zhang Yonggang Xu Liming Yuan Jun Cai Deyuan Zhang | 2012 | Journal of Materials Science & Technology2012，28，10： | 8 |
| 13 | Bisphosphonate-based nanocomposite hydrogels for biomedical applications显示文摘Nanocomposite hydrogels consist of polymeric network embedded with functional nanoparticles or nanostructures,which not only contribute to the enhanced mechanical properties but also exhibit the bioactivities for regulating cell behavior.Bisphosphonates(BPs)are capable of coordinating with various metal ions and modulating bone homeostasis.Thanks to the inherent dynamic properties of metal–ligand coordination bonds,BPbased nanocomposite hydrogels possess tunable mechanical properties,highly dynamic structures,and the capability to mediate controlled release of encapsulated therapeutic agents,thereby making them highly versatile for various biomedical applications.This review presents the comprehensive overview of recent developments in BP-based nanocomposite hydrogels with an emphasis on the properties of embedded nanoparticles(NPs)and interactions between hydrogel network and NPs.Furthermore,various challenges in the biomedical applications of these hydrogels are discussed to provide an outlook of potential clinical translation. | Weihao Yuan Zhuo Li Xian Xie Zhi-Yong Zhang Liming Bian | 2020 | Bioactive Materials2020，5，4： | 7 |
| 14 | How is mRNA expression predictive for protein expression? A correlation study on human circulating monocytes显示文摘在学习 mRNA 表示的一个关键假设是它在蛋白质表示的预言是增进知识的。然而,仅仅有限的研究在酵母探索了 mRNA 蛋白质表示关联或人的纸巾和结果是相对不一致的。我们从 30 个无关的女人在刚孤立的人的传播单核白血球在 mRNA 蛋白质表情上执行了关联分析。为 71 基因的表示蛋白质被确定并且由结合的 2-D 电气泳动识别了集体 spectrometry。相应 mRNA 表达式被 Affymetrix 基因芯片确定。重要关联(r=0.235, P < 0.0001 ) 包括所有学习基因和所有样品为整个数据集被观察。关联在基因本体论的不同生物范畴变化了。例如,最高的关联以细胞的部件为细胞外的区域的基因被完成(r=0.643, P < 0.0001 ) 并且最低关联为规定的基因被获得(r=0.099, P=0.213 ) 以生物过程。在染色体,样品的一半证明为 71 基因的重要积极关联和重要关联在所有样品在平均 mRNA 和平均蛋白质表示层次之间被发现(r=0.296, P < 0.01 ) 。在学习组水平,然而,仅仅五学习基因越过所有样品有重要积极关联。我们的结果显示出在 mRNA 和蛋白质表示层次之间的全面积极关联。然而,中等、变化的关联建议那 mRNA 表情可能有时是有用的,但是远非当然在预言蛋白质表示层次完善。 | Yanfang Guo Peng Xiao Shufeng Lei Feiyan Deng Gary Guishan Xiao Yaozhong Liu Xiangding Chen Liming Li Shan Wu Yuan Chen Hui Jiang Lijun Tan Jingyun Xie Xuezhen Zhu Songping Liang Hongwen Deng | 2008 | Acta Biochimica et Biophysica Sinica2008，40，5： | 7 |
| 15 | Effects of Multi-walled Carbon Nanotubes on the Electromagnetic Absorbing Characteristics of Composites Filled with Carbonyl Iron Particles显示文摘The electromagnetic(EM) wave absorbing property of silicone rubber filled with carbonyl iron particles(CIPs) and multi-walled carbon nanotubes(MWCNTs) was examined.Absorbents including MWCNTs and spherical/flaky CIPs were added to silicone rubber using a two-roll mixer.The complex permittivity and complex permeability were measured over the frequency range of 1-18 GHz.The two EM parameters were verified and the uniform dispersion of MWCNTs and CIPs was confirmed by comparing the measured reflection loss(RL) with the calculated one.As the MWCNT weight percent increased,the RL of the spherical CIPs/silicone rubber composites changed insignificantly.It was attributed to the random distribution of spherical CIPs and less content of MWCNTs.On the contrary,for composites filled with flaky CIPs the absorption bandwidth increased at thickness 0.5 mm(RL value lower than-5 dB in 8-18 GHz) and the absorption ratio increased at lower frequency(minimum-35 dB at 3.5 GHz).This effect was attributed to the oriented distribution of flaky CIPs caused by interactions between the two absorbents.Therefore,mixing MWCNTs and flaky CIPs could achieve wider-band and higher-absorption ratio absorbing materials. | Yonggang Xu Deyuan Zhang Jun Cai Liming Yuan Wenqiang Zhang | 2012 | Journal of Materials Science & Technology2012，28，1： | 7 |
| 16 | Tunable Schottky barrier width and enormously enhanced photoresponsivity in Sb doped SnS2 monolayer显示文摘Doping, which is the intentional introducti on of impurities into a material, can improve the metal-semiconductor interface by reducing Schottky barrier width. Here, we prese nt high-quality two-dime nsional SnS2 nano sheets with well-controlled Sb dopi ng concen tration via direct vapor growth approach and following micromechanical cleavage process. X-ray photoelectro n spectroscopy (XPS) measureme nt dem on strates that Sb contents of the doped samples are approximately 0.22%, 0.34% and 1.21%, respectively, and doping in duces the upward shift of the Fermi level with respect to the pristi ne SnS2. Tran smissio n electro n microscopy (TEM) characterizatio n exhibits that Sb-doped SnS2 nano sheets have a high-quality hexagonal symmetry structure and Sb element is uniformly distributed in the nano sheets. The phototra nsistors based on the Sb-doped SnS2 mono layers show n-type behavior with high mobility which is one order of magn itude higher than that of pristi ne SnS2 phototra nsistors. The photorespo nsivity and exter nal quantum efficiency (EQE) of Sb-S nS2 mono layers phototra nsistors are approximately three orders of magnitude higher than that of pristine SnS2 phototransistor. The results suggest that the method of reducing Shottky barrier width to achieve high mobility and photoresp on sivity is effective, and Sb-doped SnS2 mono layer has significant potential in future nanoelectronic and optoelectronic applications. | Junchi Liu Xiao Liu Zhuojun Chen Lili Miao Xingqiang Liu Bo Li Liming Tang Keqiu Chen Yuan Liu Jingbo Li Zhongming Wei Xidong Duan | 2019 | Nano Research2019，12，2： | 7 |
| 17 | Effect of applied pressure on microstructures of squeeze cast Mg-15Gd-1Zn-0.4Zr alloy显示文摘Microstructural evolution of Mg-15Gd-1Zn-0.4Zr(GZ151K,wt%)alloys,cast under 0 MPa(gravity cast)and 6 MPa(squeeze cast),were comparatively studied.It is found that the grain size of squeeze cast GZ151K alloy with applied stress 6 MPa is much smaller than that of the gravity cast counterpart.Moreover,the squeezing pressure hinders the transition fromβ’precipitates toβ1 precipitates during subsequent aging process,leading to reduced volume fraction ofβ1 precipitates in the squeeze cast alloy.Thus,the relatively lower volume fraction ofβ1 precipitates in the squeeze cast GZ151K results in higher hardness increment and stronger precipitation hardening effect. | Qian Zhao Yujuan Wu Wei Rong Ke Wang Lingyang Yuan Xiangwen Heng Liming Peng | 2018 | Journal of Magnesium and Alloys2018，6，2： | 5 |
| 18 | Effect of Cu addition on microstructures and tensile properties of high-pressure die-casting Al-5.5Mg-0.7Mn alloy显示文摘In this study, Cu was added into the high-pressure die-casting Al-5.5 Mg-0.7 Mn(wt%) alloy to improve the tensile properties. The effects of Cu addition on the microstructures, mechanical properties of the Al-5.5 Mg-0.7 Mn alloys under both as-cast and T5 treatment conditions have been investigated. Additions of 0.5 wt%, 0.8 wt% and 1.5 wt% Cu can lead to the formation of irregular-shaped Al2 CuMg particles distributed along the grain boundaries in the as-cast alloys. Furthermore, the rest of Cu can dissolve into the matrixes. The lath-shaped Al2 CuMg precipitates with a size of 15–20 nm × 2–4 nm were generated in the T5-treated Al-5.5 Mg-0.7 Mn-x Cu(x = 0.5, 0.8, 1.5 wt%) alloys. The room temperature tensile and yield strengths of alloys increase with increasing the content of Cu. Increasing Cu content results in more Al2 CuMg phase formation along the grain boundaries, which causes more cracks during tensile deformation and lower ductility. Al-5.5 Mg-0.7 Mn-0.8 Cu alloy exhibits excellent comprehensive tensile properties under both as-cast and T5-treated conditions. The yield strength of 179 MPa, the ultimate tensile strength of 303 MPa and the elongation of 8.7% were achieved in the as-cast Al-5.5 Mg-0.7 Mn-0.8 Cu alloy, while the yield strength significantly was improved to 198 MPa after T5 treatment. | Lingyang Yuan Liming Peng Jingyu Han Baoliang Liu Yujuan Wu Juan Chen | 2019 | Journal of Materials Science & Technology2019，35，6： | 4 |
| 19 | Chromatographic Resolution of a-Amino Acids by (R)-(3,3'-Halogen Substituted-l,l'-binaphthyl)-20-crown-6 Stationary Phase in HPLC显示文摘三新 chiral 为高效的液体层析的静止阶段(CSP ) 从 R-(3,3 卤素 substituted-1,1-binaphthyl ) 被准备 -20-crown-6 (卤素 = Cl, Br 并且我) 。试验性的结果证明 R-(3,3-dibromo-1,1-binaphthyl )-20-crown-6 (CSP-1 ) 比二另外的代替卤素的王冠醚衍生物拥有更突出的 enantioselectivity。所有 21 氨基酸在房间温度在 R-(3,3-dibromo-1,1-binaphthyl )-20-crown-6-based CSP-1 上有分离的不同的度。CSP-1 的 enantioselectivity 也比一些商业 R-(1,1-binaphthyl )-20-crown-6 衍生物的那些好。两分离因素()并且决定( R s )比商业王冠的那些好基于醚的 CSP [从 Daicel 的 CROWNPAK CR (+)]在为天门冬素, threonine ,脯氨酸,精氨酸,丝氨酸, histidine 和缬氨酸的一样的条件下面,它不能被商业 CR (+)分开。这研究证明 R-(3,3-dibromo-1,1-binaphthyl )-20-crown-6 chiral 的商业实用性是静止阶段。 | Peng Wu Yuping Wu JunhuiZhang Zhenyu Lu Mei Zhang Xuexian Chen Liming Yuan | 2017 | Chinese Journal of Chemistry2017，35，7： | 4 |
| 20 | Effect of W addition on phase transformation and microstructure of powder metallurgic Ti-22Al-25Nb alloys during quenching and furnace cooling显示文摘Powder metallurgic Ti2 AlNb alloys with W addition are sintered at 900, 1000, 1070 °C,and 1150 °C(i.e., in the O + B2, a_2+ B2 + O, a_2+ B2, and single B2 phase regions, respectively)for 12 h, followed by water quenching and furnace cooling. Comparisons of phase and microstructure between quenched and furnace-cooled W-modified alloys are carried out to illustrate the phase transformation and microstructure evolution during the cooling process. Furthermore, a comparison is also made between W-modified and W-free alloys, to reveal the function of the W alloying.W addition accelerates the solutions of a_2 and O phases during the high-temperature holding, and a Widmannsta¨tten B2 + O structure, which contributes to the properties, is induced by furnace cooling from all the phase regions. The Widmannsta¨tten structure includes a B2 matrix, primary O, and secondary O precipitates. However, W alloying refines the Widmannsta¨tten structure only when the alloys are solution-treated and then cooled from the single B2 phase. Although the hardness of the W-modified alloys is lower than that of the W-free alloys sintered in the same phase region, an enhancement of hardness, 489 ± 18 HV, is obtained in the alloy solution-treated in the single B2 phase region for only 0.5 h. | Junpeng YANG Qi CAI Zongqing MA Yuan HUANG Liming YU Huijun LI Yongchang LIU | 2019 | Chinese Journal of Aeronautics2019，32，5： | 4 |
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