Effect of plasma activated sintering parameters on microstructure and mechanical properties of Al-7075/B4C composites

被引：58
|
作者：
Wu, Chuandong [1 ]
Fang, Pan [1 ]
Luo, Guoqiang [1 ]
Chen, Fei [1 ]
Shen, Qiang [1 ]
Zhang, Lianmeng [1 ]
Lavernia, Enrique J. [2 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
[2] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 615卷
基金：
中国国家自然科学基金;
关键词：
Plasma Activated Sintering; Al-7075/B4C Composites; Microstructure; Bending Strength; Compressive Strength; MATRIX COMPOSITES; TEMPERATURE; ALUMINUM;
D O I：
10.1016/j.jallcom.2014.06.110
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report on a study on the influence of Plasma activated sintering (PAS) parameters on the microstructure and mechanical properties of aluminum matrix composites (AMCs). In this paper a commercial Al alloy (7075) reinforced with 7.5 wt.% B4C were synthesized using PAS. Specifically, we studied the influence of temperature, in the range of 450 degrees C to 540 degrees C, and holding time on the densification behavior of Al-7075/B4C composites. Moreover, the influence of residual porosity on mechanical properties of Al-7075/B4C composites was established via measurements of Vickers hardness, bending and compressive strength. High mechanical properties including Vickers hardness 181.6 HV, bending strength 1100.3 MPa, high compression yield strength 878.0 MPa and fracture strength 469.3 MPa of the consolidated Al-7075/B4C composite sintered at 530 degrees C for 3 min were achieved and attributed to a fully dense microstructure and a strong interface between matrix and reinforcement. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：276 / 282
页数：7
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