Thermally stable microstructures and mechanical properties of B4C-Al composite with in-situ formed Mg(Al)B2

被引：25

作者：

Zhou, Yangtao ^{[1
]}

Zan, Yuning ^{[1
]}

Zheng, Shijian ^{[1
]}

Shao, Xiaohong ^{[1
]}

Jin, Qianqian ^{[1
]}

Zhang, Bo ^{[1
]}

Wang, Quanzhao ^{[2
]}

Xiao, Bolv ^{[1
]}

Ma, Xiuliang ^{[1
,3
]}

Ma, Zongyi ^{[1
]}

机构：

[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China

[2] Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China

[3] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2019年 / 35卷 / 09期

基金：

中国国家自然科学基金;

关键词：

B4C-Al composites; Thermal stability; In-situ reinforcement; Grain boundaries; Solute segregation; TENSILE PROPERTIES; STRENGTH; STABILITY; BEHAVIOR; MATRIX; DESIGN; ZR; CU; SC;

D O I：

10.1016/j.jmst.2019.04.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

B4C particulate-reinforced 6061Al composite was fabricated by powder metallurgy method. The as-rolled composite possesses high tensile strength which is comparable to that of the peak-aged 6061Al alloy. More importantly, the microstructures and mechanical properties are thermally stable during long-term holding at elevated temperature (400 degrees C). The microstructual contributions to the strength of the composite were discussed. Transmission electron microscopy (TEM) analysis indicates that the in-situ formed reinforcement Mg(Al)Bs(2) as products of the interfacial reactions between B4C and the aluminum matrix. show not only good resistance to thermal coarsening but also strong pinning effect to the grain boundaries in the alloy matrix. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：1825 / 1830

页数：6

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