Enhanced Ductility of a W-30Cu Composite by Improving Microstructure Homogeneity

被引：14

作者：

Hao, Zehui ^{[1
]}

Liu, Jinxu ^{[1
,2
]}

Cao, Jin ^{[1
]}

Li, Shukui ^{[1
,2
,3
]}

Liu, Xingwei ^{[1
]}

He, Chuan ^{[1
,2
]}

Xue, Xinying ^{[4
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, China Natl Key Lab Sci & Technol Mat Shock & Impa, Beijing 100081, Peoples R China

[3] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

[4] Xian Modern Control Technol Res Inst, Xian 710065, Shaanxi, Peoples R China

来源：

METALS | 2019年 / 9卷 / 06期

基金：

中国国家自然科学基金; 国家重点研发计划; 美国国家科学基金会;

关键词：

W-30Cu; microstructure homogeneity; dynamic compression strength; ductility; failure mechanism; W-CU COMPOSITES; METAL-MATRIX COMPOSITES; COPPER COMPOSITE; TUNGSTEN; TEMPERATURE; EVOLUTION; MECHANISM; DENSITY; ALLOY; DENSIFICATION;

D O I：

10.3390/met9060646

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Due to its negligible solubility, it is difficult to obtain a W-30Cu composite with a homogenous microstructure. However, with a selected W skeleton, a homogeneous phase distribution was achieved for a W-30Cu composite in the present study. By detailed characterization of the mechanical performance and microstructure of the W-30Cu composite, as well as the stress distribution state under a loading condition, the effects of microstructure homogeneity on the mechanical properties and failure mechanisms are identified. The mechanisms by which the ductility and strength depend on microstructure homogeneity contain the effects on plastic deformation and stress coordination of the Cu phase network. The dominant factors for the high ductility and strength of W-30Cu composites are proposed.

引用

页数：11

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