Multi-layer laminated Pd-based metallic glass with enhanced plasticity

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:587

Article

Ma, J.^1,2  Chan, K. C.¹  Xia, L.¹  Chen, S. H.¹  Wu, F. F.¹  Li, W. H.³  Wang, W. H.² 

[1] Hong Kong Polytech Univ, Dept Ind & Syst Engn, Adv Mfg Technol Res Ctr, Hong Kong, Hong Kong, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[3] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China

关键词: Metallic glass;    Thermoplastic bonding;    Plasticity;    Blocking effect;    Structure relaxation;   

DOI  :  10.1016/j.msea.2013.08.043

来源: Elsevier

【 摘 要 】

We have demonstrated, for the first time, the enhanced plasticity of multi-layer Pd-based bulk metallic glasses (BMGs) synthesized by thermoplastic bonding (TB). The structural relaxation was minimized by using a low bonding temperature and a very short holding time. As compared to the as-cast and the two-layer BMG samples, the three-layer samples achieve larger plasticity. The fracture morphology of the multi-layer samples exhibit radiating-ridge patterns as compared to the river-like cell patterns observed in as-cast BMGs. The enhanced plasticity is due to the blocking effect of the bonding interface for the propagation of shear bands. Our research opens a promising way to synthesize BMGs with larger size and enhanced plasticity for potential structural applications. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

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