Flow Stress and Processing Map of a PM 8009Al/SiC Particle Reinforced Composite During Hot Compression

被引：5
作者：
Luo, Haibo [1 ]
Teng, Jie [1 ,2 ]
Chen, Shuang [1 ]
Wang, Yu [1 ]
Zhang, Hui [1 ,2 ]
机构：
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Key Lab Spray Deposit Technol & Applicat Hunan Pr, Changsha 410082, Hunan, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2017年 / 26卷 / 10期
基金：
中国国家自然科学基金;
关键词：
8009Al/SiC particle reinforced composite; flow stress; hot deformation; microstructure; processing map; V-SI ALLOY; METAL-MATRIX COMPOSITES; DEFORMATION-BEHAVIOR; MECHANICAL-PROPERTIES; CREEP-BEHAVIOR; RAPID SOLIDIFICATION; AL/SIC COMPOSITES; TEMPERATURES; WORKABILITY; SHEET;
D O I：
10.1007/s11665-017-2963-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hot compression tests of 8009Al alloy reinforced with 15% SiC particles (8009Al/15%SiCp composites) prepared by powder metallurgy (direct hot extrusion methods) were performed on Gleeble-3500 system in the temperature range of 400-550 A degrees C and strain rate range of 0.001-1 s(-1). The processing map based on the dynamic material model was established to evaluate the flow instability regime and optimize processing parameters; the associated microstructural changes were studied by the observations of optical metallographic and scanning electron microscopy. The results showed that the flow stress increased initially and reached a plateau after peak stress value with increasing strain. The peak stress increased as the strain rate increased and deformation temperature decreased. The optimum parameters were identified to be deformation temperature range of 500-550 A degrees C and strain rate range of 0.001-0.02 s(-1) by combining the processing map with microstructural observation.
引用
收藏
页码：4789 / 4796
页数：8
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