Strengthening and toughening of Cu matrix composites reinforced by metallic glass particles with variable size

被引：23

作者：

Bao, Weizong ^{[1
]}

Yang, Xinxin ^{[1
]}

Chen, Jie ^{[1
]}

Xiang, Tao ^{[1
]}

Zhou, Toujun ^{[1
]}

Xie, Guoqiang ^{[1
,2
]}

机构：

[1] Harbin Inst Technol Shenzhen, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China

[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2023年 / 162卷

基金：

中国国家自然科学基金;

关键词：

Strengthening; Toughening; Metallic glass reinforcements; Crack extension; THERMAL-CONDUCTIVITY; PLASTICITY; BEHAVIOR; DIFFRACTION; FABRICATION; MECHANISMS; MODEL;

D O I：

10.1016/j.ijplas.2023.103530

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Metallic glass particle reinforced CuCrZr composites with excellent mechanical and electrical properties are manufactured by ball milling and spark plasma sintering. The effect of reinforce-ment size on the microstructure and properties of composites is investigated. As the size of metallic glass particles decreases, the strength and toughness of the composites are jointly increased. Quantitative results of the strengthening mechanism show that the strength is mainly provided by grain boundaries and metallic glass particles, with the fine and dispersed metallic glass reinforcements contributing more to the strength. Furthermore, crack extension behavior under uniaxial compression is observed for composite sections. The results indicate that cracks sprout and expand along the interface, and the interface bonding modified by the ball milling (BM) process can effectively inhibit the crack merging process. In particular, the crack extension rate corresponds to the plasticity of the particle-reinforced composite as determined by the interfacial properties, particle size and distribution of the reinforcement.

引用

页数：13

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