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| 1 | Recent developments in high-strength Mg-RE-based alloys:Focusing on Mg-Gd and Mg-Y systems显示文摘Higher strength is always the goal pursued by researchers for the structural materials,especially for the lightweight magnesium(Mg)alloys which generally have relatively low strength at present.From this aspect,the present paper reviews the recent reports of a kind of Mg alloys,i.e.Mg-RE(RE:rare earths,mainly Gd or Y)casting and wrought alloys,which have been able to achieve high strength compared with common or commercial Mg alloys,from the viewpoint and content of the alloy system,alloying constitution,preparation process,tensile strength and each of the main strengthening mechanisms.This review of recent research and developments in high-strength Mg-RE alloys is beneficial for the further design of Mg alloys with higher strength as well as excellent comprehensive performance. | Jinghuai Zhang Shujuan Liu Ruizhi Wu Legan Hou Milin Zhang | 2018 | Journal of Magnesium and Alloys2018，6，3： | 60 |
| 2 | Microstructure and mechanical properties of Mg-5Li-1Al sheets prepared by accumulative roll bonding显示文摘Ultrafine-grain and high-strength Mg-5Li-1Al sheets were prepared by accumulative roll bonding(ARB)process. Evolution of microstructure and mechanical properties of ARB-processed Mg-5Li-1Al sheets was investigated.Results show that, during ARB process, the evolution of deformation mechanism of t Mg-5Li-1Al alloy is as follows: twinning deformation, shear deformation, forming macro shear zone, and finally dynamic recrystallization(DRX). The grain refining mechanism changes from twin DRX to rotation DRX. With the increase in ARB cycles, strength of the Mg-5Li-1Al sheets is enhanced, whilst elongation varies slightly.With the increase in rolling cycles, anisotropy of mechanical properties decreases. It is conclusive that strain hardening and grain refinement dominate the strengthening mechanism of Mg-5Li-1Al alloy. | Legan Hou Tianzi Wang Ruizhi Wu Jinghuai Zhang Milin Zhang Anping Dong Baode Sun Sergey Betsofen Boris Krit | 2018 | Journal of Materials Science & Technology2018，34，2： | 13 |
| 3 | The transformation of LPSO type in Mg-4Y-2Er-2Zn-0.6Zr and its response to the mechanical properties and damping capacities显示文摘The transformation of LPSO type in Mg-4Y-2Er-2Zn-0.6Zr during heat treatment and its influence on damping and mechanical properties are reported in this work.Prior to heat treatment,the alloy consisted of a-Mg matrix and lamellar 14H LPSO phases.After 510℃heat treatment,lamellae shortened,and their content decreased.Upon 8h heat treatment,block 18R LPSO phases formed at the grain boundaries while 14H LPSO lamellae disappeared.Presence of block 18R LPSO phases improved mechanical and damping properties of the alloy.The corresponding mechanisms of the influence of LPSO type and morphology on mechanical and damping capacities are discussed. | Dan Wang Huajie Wu Ruizhi Wu Yang Wang Jinghuai Zhang Sergey Betsofen Boris Krit Legan Hou Turahodjayev Nodir | 2020 | Journal of Magnesium and Alloys2020，8，3： | 13 |
| 4 | Expression of cyclooxygenase-2 is associated with p53 accumulation in premalignant and malignant gallbladder lesions显示文摘瞄准:在胆囊癌和它的先锋损害在表示和 p53 累积上检验在 cyclooxygenase-2 (COX-2 ) 之间的关系。方法:包括正常胆量 blader 上皮,发育异常(11 低档 dyplasia 和 16 高级发育异常) 的 27 个盒子和 27 腺癌的 14 个盒子的 68 件胆囊织物样品被免疫组织化学为 COX-2 表示和 p53 累积评估。在 COX-2 表示, p53 累积和 clinicopathological 特征之中的关系被分析。结果:COX-2 被表示在 14.3% 正常胆囊上皮, 70.3% 发育异常的 epite hlium,和 59.2% 腺癌。当划分了成低档和高级发育异常时, COX-2 在 5 是积极的(45.4%) 低档的盒子并且 14 (87.5%) 高级发育异常(P = 0.019 ) 。p53 的累积在 5 被检测(31.2%) 癌的高级发育异常并且在 13 的盒子(48.1%) 。没有 p53 累积在正常上皮或低档发育异常被发现。在表示上的 COX-2 在 18 中的 17 个被观察(94.4%) 有从没有 p53 累积的 50 个盒子的与 20 比较的 p53 累积(40.0%) 的盒子(P <
0.001 ) 。结论:在在正常上皮,低档发育异常和高级发育异常之中的 COX-2 表示的有效差量建议在 COX-2 的表示上,酶是在胆囊 carcinogenensis 的一个早事件。自从有 COX-2 表示的 p53 相互关联的累积,而且,在表示上的 COX-2 在高级发育异常和癌可能是的胆囊观察了部分由于 p53 的机能障碍。 | Mateja Legan Bo(s|ˇ)tjan Luzar Vera Ferlan Marolt Andrej C(o|¨)r | 2006 | World Journal of Gastroenterology2006，12，21： | 7 |
| 5 | Enhanced Electromagnetic Interference Shielding in a Duplex-Phase Mg-9Li-3Al-1Zn Alloy Processed by Accumulative Roll Bonding显示文摘High electromagnetic shielding performance was achieved in the Mg-9Li-3Al-1Zn alloy processed by accumulative roll bonding(ARB).The microstructure,electromagnetic interference shielding effectiveness(SE) in the frequency of 30-1500 MHz and mechanical properties of the alloy were investigated.A model based on the shielding of the electromagnetic plane wave was used to theoretically discuss the EMI shielding mechanisms of ARB-processed alloy.Results indicate that the SE of the material increases gradually with the increase in the ARB pass.The enhanced SE can be attributed to the obvious microstructure orientation caused by ARB,and the alternative arrangement of alpha(Mg) phase and beta(Li)phase.In addition,with the increase in ARB pass,the number of interfaces between layers increases and the grain orientation of each layer tends to alignment along c-axis,which is beneficial to the reflection loss and multiple reflection loss of the incident electromagnetic wave. | Jiahao Wang Lin Xu Ruizhi Wu Jing Feng Jinghuai Zhang Legan Hou Milin Zhang | 2020 | Acta Metallurgica Sinica(English Letters)2020，33，4： | 6 |
| 6 | Coarsening kinetics and strengthening mechanisms of core-shell nanoscale precipitates in Al-Li-Yb-Er-Sc-Zr alloy显示文摘The tailored nanoparticles with a complex core/shell structure can satisfy a variety of demands, such as lattice misfit, shearability and coarsening resistance. In this research, core-shell nanoscale Al3(Yb, Er, Sc,Zr, Li) composite particles were precipitated in Al-2 Li-0.1 Yb-0.1 Er-0.1 Sc-0.1 Zr(wt%) alloy through the double-aging treatment, in which the core was(Yb, Er, Sc, Zr)-rich formed at 300°C and the shell was Li-rich formed at 150°C. The coarsening kinetics and precipitate size distributions(PSDs) of Al3(Yb, Er, Sc,Zr, Li) particles aged at 150°C previously aged at 300°C for 24 h showed a better fit to the relation of 2∝ kt and normal distribution, indicating that the coarsening of precipitates was controlled by interface reaction, not diffusion. The Orowan bypass strengthening was operative mechanism at 150°C. | Yang Wang Shun Zhang Ruizhi Wu Nodir Turakhodjaev Legan Hou Jinghuai Zhang Sergey Betsofen | 2021 | Journal of Materials Science & Technology2021，，2： | 5 |
| 7 | Microstructure and mechanical properties at elevated temperature of Mg-Al-Ni alloys prepared through powder metallurgy显示文摘Mg-Al-Ni alloys were prepared by powder metallurgy, and their microstructure and elevated temperature mechanical properties were investigated. Results indicate that, in addition to α-Mg matrix, both coarse Al_3Ni_2 particles and fine Al Ni nano-particles exist in the Mg-Al-Ni alloys. The strength at 150?C is improved with the increase in Ni content. Mg-18.3Al-8Ni alloy possesses a compressive strength of234.7 MPa and a yield strength of 146.5 MPa. Plasticity is also improved with a low concentration of Ni. Mg-11.3Al-2Ni alloy possesses a compression ratio of 17.3%. The phases of Al_3Ni_2 and Al Ni in the alloys block the movements of grain boundaries and dislocations during the deformation at elevated temperature. The existence of Al Ni phase provides a non-basal slip system, leading to the improvement in plasticity. Finally, the formation mechanism of Al-Ni phases in the process is discussed with thermodynamics and kinetics. | Legan Hou Bingcheng Li Ruizhi Wu Lin Cui Peng Ji Ruiying Long Jinghua Zhang Xinlin Li Anping Dong Baode Sun | 2017 | Journal of Materials Science & Technology2017，33，9： | 4 |
| 8 | Mathematical analysis and its experimental comparisons for the accumulative roll bonding(ARB)process with different superimposed layers显示文摘Based on the traditional two-layer accumulative roll bonding(TARB),the geometrical variations and mathematical relationship during the four-layer accumulative roll bonding(FARB)were derived and summarized.Furthermore,the multi-layer accumulative roll bonding(MARB)technology was proposed and the geometrical variations and mathematical relationship of MARB were simultaneously derived and summarized.Experimentally,Mg-14Li-3Al-2Gd(LAGd1432)sheets were fabricated by TARB and FARB,respectively.Compared with the TARB,the FARB has a higher accumulative efficiency in terms of accumulative layers,total number of interfaces,interface spacing,total deformation and equivalent strain.Therefore,the FARB-processed sheets in lower cycles have the similar microstructure and mechanical properties of the TARB-processed sheets in higher cycles.In addition,FARB process can further break through the deformation limit of TARB process in a single cycle through adopting two-step rolling in one cycle with 50%deformation in one pass and 75%accumulative deformation in one cycle,which can effectively solve the problem of poor interface bonding of the latest interface brought by the last cycle,and thus significantly improve the phenomenon of unstable performance of the ARB-processed sheets. | Haipeng Zheng Ruizhi Wu Legan Hou Jinghuai Zhang Milin Zhang | 2021 | Journal of Magnesium and Alloys2021，9，5： | 4 |
| 9 | Effect of carbonate additive on the microstructure and corrosion resistance of plasma electrolytic oxidation coating on Mg-9Li-3Al alloy显示文摘Carbonate was added to the silicate system electrolyte to improve the corrosion resistance of the plasma electrolytic oxidation coating on Mg-9Li-3Al(wt%,LA93)alloy.The influences of carbonate on the morphology,structure,and phase composition of the coating were investigated by scanning electron microscopy,energy dispersive spectrometry,X-ray diffraction,and X-ray photoelectron spectroscopy.The corrosion resistance of the coating was evaluated by electrochemical experiment,hydrogen evolution,and immersion test.The results showed that the addition of carbonate resulted in a denser coating with increased hardness,and the corrosion-resistant Li_(2)CO_(3) phase was formed.Electrochemical experiments showed that compared with the coating without carbonate,the corrosion potential of the carbonate coating positively shifted(24 mV),and the corrosion current density was reduced by approximately an order of magnitude.The coating with carbonate addition possessed a high corrosion resistance and long-term protection capability. | Siyuan Jin Xiaochun Ma Ruizhi Wu Tingqu Li Jiaxiu Wang Boris L Krit Legan Hou Jinghuai Zhang Guixiang Wang | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，7： | 3 |
| 10 | Fabrication and Characterization of Porous Sintered Ti—Ag Compacts for Biomedical Application Purpose显示文摘Porous sintered Ti—Ag compacts with different Ag content were fabricated by powder metallurgy.The associated hydrothermal treatment and the effect on the apatite formation were studied.The results suggested that TiO was generated under the condition of low vacuum(1×10^(-2) Pa) during the process of burning out the spacer-holding particles.After hydrothermal treatment,a sub-microscale porous layer was formed at the pore wall surface of the samples.The apatite-inducing ability of hydrothermal treated porous sintered Ti—Ag compacts with different Ag content was evaluated in modified simulated body fluid(SBF).And the results proved that there is a clear correlation between the apatite-inducing ability and Ag content.The higher Ag content in porous leads to the decrease of Na^+ ions and basic hydroxyl(OH)_b amount,resulting in the decline of apatite-inducing ability in the first stage.However,their apatite-inducing ability was not significantly different from that of Ti after two weeks SBF immersing.Hence,the ionic activity should restore with the processing of SBF soaking,as the saturation of Ag effect. | Legan Hou Li Li Yufeng Zheng | 2013 | Journal of Materials Science & Technology2013，29，4： | 3 |
| 11 | Further studies with a noninvasive method of intracranial pressure estimation 显示文摘 | York D Legan M Benner S | 1984 | Neurosurgery1984，14，： | 2 |
| 12 | Cephalometrics for orthognathic surgery显示文摘 | JAMES R B LEGAN H | 1978 | J Oral Surg1978，36，4： | 1 |
| 13 | A targeted de-letion in alpha-tectorin reveals that the tectorial membrane is re-quired for the gain and timing of cochlear feedback显示文摘 | Legan PK Lukashkina VA Goodyear RJ | | 0，，： | 1 |
| 14 | Use of recombinant aequorin to study calcium transients in response to heat and cold in cyanobacterial显示文摘 | Leganes F Bonilla I Fernandez - Pinas F | 2000 | Plant Physiology2000，123，1： | 1 |
| 15 | Staphylococcus aureus growth boundaries:Moving towards mechanistic predictive models based on solute-specific effects显示文摘 | Stewart C M Cole M B Legan J D | 2002 | Applied and Environment Microbiology2002，68，4： | 1 |
| 16 | Methamphetamine cytotoxicity and effect on LPS-stimulated IL-1β production by human monocytes显示文摘 | Tipton DA Legan ZT Dabbous MKh | | 0，，03： | 1 |
| 17 | Use of recombinant aequorin to study calcium homeostasis and monitor calcium transients in response to heat and cold shock in cyanobacteria显示文摘 | Torrecilla I Leganes F Bonilla I | 2000 | Plant Physiol2000，123，： | 1 |
| 18 | Further studies with a noninvasive method of intracranial pressure estimation显示文摘 | York D Legan M Benner S | 1984 | Neurosurgery1984，14，4： | 1 |
| 19 | Further studies with a noninvasive method of intracranial pressure estimation显示文摘 | York D Legan M Benner S | 1984 | Neurosurgery1984，14，： | 1 |
| 20 | Soft tissue cephalometric analysis for orthognathic surgery显示文摘 | Legan HL Burstone CJ | 1980 | J Oral Surg1980，38，10： | 1 |
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