Microstructure Evolution in Hot Rolled 7075 Al via Friction Stir Processing

被引：0
|
作者：
Guo, Mei Ling [1 ]
Tan, Ming Jen [1 ]
Liu, Feng Chao [2 ]
Song, Xu [3 ]
Chua, Beng Wah [3 ]
机构：
[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[2] Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[3] Singapore Inst Mfg Technol, Singapore 638075, Singapore
来源：
PROCEEDINGS OF THE 19TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING (ESAFORM 2016) | 2016年 / 1769卷
关键词：
ALLOY; SUPERPLASTICITY; BEHAVIOR;
D O I：
10.1063/1.4963624
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Friction stir processed (FSP) hot rolled 7075 Al alloy with grain size of 5.2 mu m was investigated in the temperature range 350 degrees C-500 degrees C and strain rates from 3x10(-4) to 10(-1) s(-1). Maximum superplastic elongation of 776.4 % was achieved at 500 degrees C and strain rate 10(-3)s(-1). The microstructure evolution of FSP 7075 Al during superplastic deformation was studied by electron backscatter diffraction (EBSD). Further analyses of superplastic results indicated the main deformation mechanism of ESP 7075 Al was grain boundary sliding (GBS).
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页数：6
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