复合材料
材料科学
钛镍合金
阻尼能力
相(物质)
吸收能力
吸收(声学)
3d打印
形状记忆合金
化学
化学工程
生物医学工程
医学
工程类
有机化学
合金
作者
Mingyang Zhang,Qin Yu,Zengqian Liu,Jian Zhang,Guoqi Tan,Da Jiao,Wenjun Zhu,Shujun Li,Zhefeng Zhang,Rui Yang,Robert O. Ritchie
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2020-05-08
卷期号:6 (19)
被引量:142
标识
DOI:10.1126/sciadv.aba5581
摘要
It is of significance, but still remains a key challenge, to simultaneously enhance the strength and damping capacities in metals, as these two properties are often mutually exclusive. Here, we provide a multidesign strategy for defeating such a conflict by developing a Mg-NiTi composite with a bicontinuous interpenetrating-phase architecture through infiltration of magnesium melt into three-dimensionally printed Nitinol scaffold. The composite exhibits a unique combination of mechanical properties with improved strengths at ambient to elevated temperatures, remarkable damage tolerance, good damping capacities at differing amplitudes, and exceptional energy absorption efficiency, which is unprecedented for magnesium materials. The shape and strength after deformation can even be largely recovered by heat treatment. This study offers a new perspective for the structural and biomedical applications of magnesium.
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