A metallic glass syntactic foam with enhanced energy absorption performance

SCRIPTA MATERIALIA

卷:119

Article

Lin, H.¹  Wang, H. Y.¹  Lu, C.²  Dai, L. H.¹ 

[1] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China

[2] Curtin Univ, Dept Mech Engn, Perth, WA 6845, Australia

关键词: Bulk metallic glass;    Syntactic foam;    Energy absorption;    Shear bands;   

DOI  :  10.1016/j.scriptamat.2016.03.034

来源: Elsevier

【 摘 要 】

By using the high-pressure melt infiltration technique, a syntactic foam is fabricated with bulk metallic glass and alumina cenospheres. Compared to pure metallic glass foams, the new foam possesses a greatly enhanced energy absorbing capacity of 113.6 MJ m(-3) due to the combination of high strength, stability and ductility. It is shown that the high strength of the foam primarily results from alumina cenospheres, which enhance its stability and induce a stable stress platform. Both the collapse of struts and multiple shear bands in metallic glass matrix accommodate large deformation. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free