Tensile properties and microstructure of in situ NiAl-Cr (Zr) eutectic composite

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	Tensile properties and microstructure of in situ NiAl-Cr (Zr) eutectic composite
	J. T. Guo; Y. H. Qi; G. S. Li; W. T. Wu
	2003
发表期刊	Composite Structures
ISSN	0263-8223
卷号	62 期号:3-4 页码:323-327
摘要	An in situ NiAl-33.5Cr-0.5Zr, composite was prepared by vacuum induction melting followed by hot isostatical pressing (HIP) at 1573 K and 100 MPa for 3 h. The microstructure of the composite is composed of NiAl matrix and Cr phase with small amount of Ni2AlZr and Zr-rich phases distributing at the interfaces of NiAl and Cr phases. It is found that the composite is stronger and more ductile than that of some NiAl-based alloys at high temperature. However the composite is still brittle at room temperature and becomes ductile with the increase of testing temperature. The brittle-to-ductile transition temperature (BDTT) is the function of initial strain rate. Under the creep deformation at 1273 K and 100 MPa, the minimum creep rate of the composite is three orders lower than that of the polycrystalline NiAl and single crystalline NiAl [001]. TEM observations on the deformed samples of both tension and creep show that dynamic recrystallization has occurred during high temperature deformation process. (C) 2003 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, inst met res, dept superalloys & intermet, shenyang 110016, peoples r china. liaoning inst technol, dept mat & chem engn, jinzhou 121001, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, dept superalloys & intermet, shenyang 110016, peoples r china;jtguo@imr.ac.cn
关键词	In Situ Composite Nial Microstructure Tensile Property Creep Rod-plate Transition Mechanical-properties Creep-behavior Strain-rate Temperature Alloy Compound
URL	查看原文
WOS记录号	WOS:000221683100011
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35840
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. T. Guo,Y. H. Qi,G. S. Li,et al. Tensile properties and microstructure of in situ NiAl-Cr (Zr) eutectic composite[J]. Composite Structures,2003,62(3-4):323-327.
APA	J. T. Guo,Y. H. Qi,G. S. Li,&W. T. Wu.(2003).Tensile properties and microstructure of in situ NiAl-Cr (Zr) eutectic composite.Composite Structures,62(3-4),323-327.
MLA	J. T. Guo,et al."Tensile properties and microstructure of in situ NiAl-Cr (Zr) eutectic composite".Composite Structures 62.3-4(2003):323-327.