Exceptionally strong and ductile bulk metallic glass composite with bioinspired architecture mimicking porcupine fish spine

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外文摘要：Introducing soft crystalline phases into the glassy matrix to produce bulk metallic glass composites(BMGCs)is an effective way to enhance the ductility of bulk metallic glasses(BMGs).However,the in-troduction of soft crystalline phases severely sacrifices the strength,resulting in the strength-ductility trade-off.To defeat this dilemma,here,we successfully fabricate a bioinspired BMGC with architecture mimicking a porcupine fish spine.The bioinspired BMGC shows a pronounced yield strength of～800 MPa with an excellent fracture strain of～35％.The fabrication of the bioinspired BMGC is achieved through infiltration and vitrification of molten Zr50Ti5Cu27Ni10Al8(Zr50)melt into the crystalline Nb skeleton fab-ricated by laser additive manufacturing(LAM).Such enhanced strength-ductility synergy is attributed to the asynchronous deformation associated with the delicate bioinspired heterogeneous architecture.The bioinspired structural design motif,enabled by the combination of LAM and infiltration casting technolo-gies,opens a new window to develop high-performance BMGCs on a large scale for structural applica-tions.

外文关键词：

Bulk metallic glass compositeBioinspired structureStrengthDuctility

作者：

Xiangcheng Cui、Qianyu Jiao、Weiqi Wang、Long Zhang、Yunzhuo Lu

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作者单位：

School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China

Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China

基金：

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYouth Innovation Promotion Association CAS

项目编号：

2023YFB340810152171164522710222021188

出版年：

2024

DOI：

10.1016/j.jmst.2024.01.033

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.195(28)