Constitutive flow behavior and hot workability of powder metallurgy processed 20 vol.%SiC(P)/2024Al composite

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	Constitutive flow behavior and hot workability of powder metallurgy processed 20 vol.%SiC(P)/2024Al composite
	J. C. Shao; B. L. Xiao; Q. Z. Wang; Z. Y. Ma; Y. Liu; K. Yang
	2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:29-30 页码:7865-7872
摘要	Constitutive flow behavior and hot workability of the powder metallurgy processed 20 vol.%SiC(P)/2024Al composite were investigated using hot compression tests. The modified Arrhenius-type constitutive equations were presented with the values of material constants in consideration as a function of strain. Dynamic material model (DMM) and modified DMM were used to construct the power dissipation efficiency maps, and Ziegler's instability criterion and Gegel's stability criterion were used to build instability maps. The presence of finer SiC(P) and more boundaries resulting from smaller 2024Al powders shifted the dynamic recrystallization domain of the 2024Al matrix to higher strain rate and lower temperature ranges and decreased the peak value of power dissipation efficiency. Large instable regions were found in the form of flow localization and cavitations located at the matrix/SiC(P) interfaces and within the SiC(P) clusters. By comparison, the Gegel's stability criterion was more sensitive to the instability zones than the Ziegler's instability criterion for this material. (c) 2010 Elsevier B.V. All rights reserved.
部门归属	[shao, j. c.; xiao, b. l.; wang, q. z.; ma, z. y.; liu, y.; yang, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ma, zy (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;zyma@imr.ac.cn
关键词	Metal Matrix Composites Constitutive Equations Processing Maps Aluminum Alloys Powder Metallurgy 6061+20-percent Al2o3 Composite Matrix Composites Working Characteristics Deformation-behavior Al Composite Maps Aluminum 20-percent Particles Extrusion
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31427
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. C. Shao,B. L. Xiao,Q. Z. Wang,et al. Constitutive flow behavior and hot workability of powder metallurgy processed 20 vol.%SiC(P)/2024Al composite[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(29-30):7865-7872.
APA	J. C. Shao,B. L. Xiao,Q. Z. Wang,Z. Y. Ma,Y. Liu,&K. Yang.(2010).Constitutive flow behavior and hot workability of powder metallurgy processed 20 vol.%SiC(P)/2024Al composite.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(29-30),7865-7872.
MLA	J. C. Shao,et al."Constitutive flow behavior and hot workability of powder metallurgy processed 20 vol.%SiC(P)/2024Al composite".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.29-30(2010):7865-7872.