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New ductile laminate structure of Ti-alloy/Ti-based metallic glass composite with high specific strength

查看全文 作　　者：[1]D.Li;[1]Z.W.Zhu;[1]A.M.Wang;[1]H.M.Fu;[1]H.Li;[1]H.W.Zhang;[1]H.F.Zhang 高影响力作者 机构地区：[1]Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences高影响力机构 出　　处：《Journal of Materials Science & Technology》索引2018年第34卷第4期,共5页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (Nos. 51434008 (U1435204) and 51531005);the China’s Manned Space Station Project (No. TGJZ800-2-RW024);Science and Technology Planning Project of Guangdong Province, China (Nos. 2015B090926001 and 2015B010122001);the Youth Innovation Promotion Association CAS;Shuangchuang Project of Jiangsu Province, China 摘　　要：Bulk laminate structure of Ti-alloy/Ti-based metallic glass composite(MGC) was prepared by melting a preform of alternate stack-up foils in the high vacuum atmosphere. The composite demonstrates a good combination of yield strength(~1618 MPa), plasticity(~4.3%) and specific fracture strength(384 × 10~3 Nmkg^(-1)) in compression. The maintained yield strength results from the unique microstructure composed of the Ti layer, the solution layer with gradient structure and the MGC layer. Such a multilayer structure effectively inhibits the propagation of shear band, leading to the enhanced plasticity. Those extraordinary properities suggest that combining ductile lamella with brittle metallic glass(MG) by such a lay-up method can be an effective way to improve mechanical properties of MG. 关 键 词：金属性 结构 合成 薄片 玻璃 机械性质 高真空 破裂力
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