报告题目：A high-strength and corrosion-resistant magnesium alloy
报告人：Prof. Wanqiang Xu
School of Materials Science and Engineering, TheUniversity of NewSouth Wales, Australia
Ultra-lightweight alloys with high strength, ductility and corrosion resistance are desirable for applications in the automotive, aerospace, defence, biomedical, sporting and electronic goods sectors. Ductility and corrosion resistance are generally inversely correlated with strength, making it difficult to optimize all three simultaneously. Here we design an ultralow density (1.4 g/cm3) Mg–Li-based alloy that is strong, ductile, and more corrosion resistant than Mg-based alloys reported so far. The alloy is Li-rich and a solute nanostructure within a body-centred cubic matrix is achieved by a series of extrusion, heat treatment and rolling processes. Corrosion resistance from the environment is believed to occur by a uniform lithium carbonate film in which surface coverage is much greater than in traditional hexagonal close-packed Mg-based alloys, explaining the superior corrosion resistance of the alloy.
Wanqiang Xu, Nick Birbilis, Gang Sha, Yu Wang, John E. Daniels, Yang Xiao, Michael Ferry, Nature Materials, 2015-10-19 (2015,DOI:doi:10.1038/nmat4435
主持人：材料学院新结构材料实验室蒋建中教授
报告地点：玉泉校区，教六-231房间
报告时间：11月19日上午11：00
联系人：曹庆平电话： 87952107
联系人：曹庆平电话： 87952107
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材料学院
2015-11-17
