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| 1 | 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 |
| 2 | 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 |
| 3 | Influence of Voltage on the Corrosion and Wear Resistance of MicroArc Oxidation Coating on Mg-8Li-2Ca Alloy显示文摘Calcium phosphate(CaP) coatings were prepared on Mg–8Li–2Ca magnesium alloy by micro-arc oxidation(MAO) in an alkaline Na_3PO_4–Ca[C_3H_7O_6P] base solution at the different applied voltages. Scanning electron microscope and X-ray diffraction were employed to characterize the microstructure and phase composition of the coatings, respectively. The corrosion resistance of the coatings was assessed by potential dynamic polarization curves, electrochemical impedance spectroscopy and hydrogen evolution experiment in simulated body fluids solution. The friction and wear properties were evaluated by friction and wear testing machine. The results demonstrate that the coating surface is porous and mainly composed of MgO, Ca_5(PO_4)_3(OH) and CaH_2P_2O_5. With the increase in voltage, the corrosion resistance and wear resistance of the MAO coating are both enhanced. The corrosion current density of the MAO coating decreases about two orders of the magnitude compared to the substrate. Additionally, wear and corrosion mechanisms are discussed. | Bing-Yu Qian Wei Miao Min Qiu Fan Gao Dong-Hui Hu Jian-Feng Sun Rui-Zhi Wu Boris Krit Sergey Betsofen | 2019 | Acta Metallurgica Sinica(English Letters)2019，32，2： | 8 |
| 4 | 镁锂合金腐蚀综述显示文摘镁锂合金耐蚀性差是制约其广泛应用的关键问题。本文在总结大量镁锂合金腐蚀行为研究的基础上,阐述镁锂合金腐蚀行为的影响因素和提高其耐蚀性的加工工艺。首先,介绍镁锂合金的腐蚀特点;然后,重点解释晶粒尺寸、晶粒取向、第二相和表面膜对腐蚀行为的影响规律,并通过合金化、塑性变形和热处理工艺改变镁锂合金腐蚀性能。进一步深入讨论镁锂合金的腐蚀机理;最后,提出针对提高镁锂合金耐蚀性应重点关注的方面。 | 马晓春 靳思远 巫瑞智 王甲秀 王桂香 Boris KRIT Sergey BETSOFEN | 2021 | Transactions of Nonferrous Metals Society of China2021，31，11： | 7 |
| 5 | 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 |
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