Effect of Pack Rolling and Heat Treatment on Microstructure and Mechanical Properties of B4CP/6061Al Composite Prepared by Powder Metallurgy

被引:0
作者
Liu, Shengpu [1 ]
Zhou, Zhaoyao [1 ]
Li, Defu [2 ]
Guo, Shengli [2 ]
Shu, Shi [3 ]
机构
[1] South China Univ Technol, Nat Engn Res Ctr Near Net Shape Forming Metall Ma, Sch Mech & Automot Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] GRINM Grp Corp Ltd, Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China
[3] Hunan Ordnance Ind Grp Co Ltd, Hunan Ordnance Ind Technol Ctr Corp Ltd, Changsha 410011, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
B4CP; 6061Al composite; Pack rolling; Heat treatment; Microstructure; Mechanical properties; TENSILE PROPERTIES; AGING BEHAVIOR; EVOLUTION; EXTRUSION; ALUMINUM; DESIGN; ALLOY;
D O I
10.1007/s12540-019-00546-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study aims to investigate the effect of hot pack rolling and T6 heat treatment on microstructure and mechanical properties of 25 vol% B4CP/6061Al composite fabricated by powder metallurgy. Results show that hot pack rolling process could break the particle agglomeration, refine grain size, decrease porosity and improve the interface bonding quality. Almost 15%, 21% and 328% improvement in ultimate tensile strength, yield strength and elongation for B4CP/6061Al composite were obtained after hot pack rolling. It was also found that the average grain size increased due to the static recrystallization during the T6 heat treatment process. XRD patterns revealed that Mg2Si precipitation hardening phase was formed in the matrix. Compared with the rolled B4CP/6061Al composite, T6 heat treatment resulted in improving the ultimate tensile strength, yield strength and elongation by 7%, 11% and 50%. The strengthening mechanisms and fractured surfaces under different stages were also discussed. Graphic The hot pack rolling process could break the particle agglomeration, refine grain size, decrease porosity and improve the interface bonding quality. The properties test indicates that almost 15%, 21% and 328% improvement in ultimate tensile strength, yield strength and elongation for B4CP/6061Al composite were obtained after hot pack rolling. Compared with the roll-ed B4CP/6061Al composite, T6 heat treatment resulted in improving the ultimate tensile strength, yield strength and elongation by 7%, 11% and 50%.
引用
收藏
页码:1819 / 1826
页数:8
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