The Hot Workability of SiCp/2024 Al Composite by Stir Casting

被引：24
作者：
Wang, S. Y.
Tang, Q.
Li, D. J.
Zou, J. X.
Zeng, X. Q. [1 ,2 ]
Ouyang, Q. B.
Ding, W. J.
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200030, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composite, Shanghai 200030, Peoples R China
来源：
MATERIALS AND MANUFACTURING PROCESSES | 2015年 / 30卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Flow; Composite; Compression; Workability; Hot-processing; Constitutive; DYNAMIC RECRYSTALLIZATION; MAGNESIUM ALLOY; DEFORMATION-BEHAVIOR; SUPERPLASTIC DEFORMATION; PROCESSING MAPS; SICP COMPOSITES; PARTICLE; WORKING; FLOW; COMPRESSION;
D O I：
10.1080/10426914.2014.952027
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The hot workability of SiCp/2024 Al composite was explored by conducting hot compression simulation experiments on Gleeble-3500 under temperatures of 300-500 degrees C and strain rates of 10(-3)-1s(-1). Constitutive equation was developed through hyperbolic sine function, and the activation energy was calculated to be 151kJmol(-1). The hot processing maps referring to dynamic material model were drawn in a true strain range from -0.2 to -0.8. At the strain of -0.8, the recommended regions in processing map contained two domains: superplastic domain (500 degrees C, 10(-3)s(-1)) with an efficiency of about 0.72 and DRX domain (500 degrees C, 1s(-1)) with an efficiency of about 0.45. Together with macrostructure and microstructure observations, it was suggested to remove the DRX region.
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收藏
页码：624 / 630
页数：7
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