Microstructure and mechanical properties of NiAl-Cr(Mo)-Hf/Ho near-eutectic alloy prepared by suction casting

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	Microstructure and mechanical properties of NiAl-Cr(Mo)-Hf/Ho near-eutectic alloy prepared by suction casting; Microstructure and mechanical properties of NiAl-Cr(Mo)-Hf/Ho near-eutectic alloy prepared by suction casting
	L. Y. Sheng; J. T. Guo; W. Zhang; L. Z. Zhou; H. Q. Ye
	2009 ; 2009
发表期刊	International Journal of Materials Research ; International Journal of Materials Research
ISSN	1862-5282 ; 1862-5282
卷号	100 期号:11 页码:1602-1606
摘要	The microstructure and mechanical properties of 0.15 at.% Hf and 0.2 at.% Ho doped Ni-33Al-28Cr-6Mo near-eutectic alloys prepared by conventional casting and suction casting were investigated. The results reveal that the addition of Hf and Ho results in the formation of Ni(2)AlHf and Ni(2)Al(3)Ho phases, respectively, along the NiAl and Cr(Mo) phase interface in intercellular regions. Compared with the conventional-cast alloy, the microstructure of suction-cast alloy is well optimized, characterized by the thin interlamellar spacing, high proportion of eutectic cell area and fine homogeneously distributed Ni(2)AlHf and Ni(2)Al(3)Ho phases. Furthermore, the room temperature mechanical properties of the suction-cast alloy improve significantly, which can be attributed to fine microstructure, uniform distribution of the Ni(2)AlHf and Ni(2)Al(3)Ho phases and solid solubility extension.; The microstructure and mechanical properties of 0.15 at.% Hf and 0.2 at.% Ho doped Ni-33Al-28Cr-6Mo near-eutectic alloys prepared by conventional casting and suction casting were investigated. The results reveal that the addition of Hf and Ho results in the formation of Ni(2)AlHf and Ni(2)Al(3)Ho phases, respectively, along the NiAl and Cr(Mo) phase interface in intercellular regions. Compared with the conventional-cast alloy, the microstructure of suction-cast alloy is well optimized, characterized by the thin interlamellar spacing, high proportion of eutectic cell area and fine homogeneously distributed Ni(2)AlHf and Ni(2)Al(3)Ho phases. Furthermore, the room temperature mechanical properties of the suction-cast alloy improve significantly, which can be attributed to fine microstructure, uniform distribution of the Ni(2)AlHf and Ni(2)Al(3)Ho phases and solid solubility extension.
部门归属	[guo, jianting] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. [sheng, liyuan] ind technol inst, guangzhou, guangdong, peoples r china. [sheng, liyuan] chinese acad sci, guangzhou, guangdong, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, superalloys div, 72 wenhua rd, shenyang 110016, peoples r china;jtguo@imr.ac.cn ; [guo, jianting] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. [sheng, liyuan] ind technol inst, guangzhou, guangdong, peoples r china. [sheng, liyuan] chinese acad sci, guangzhou, guangdong, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, superalloys div, 72 wenhua rd, shenyang 110016, peoples r china;jtguo@imr.ac.cn
关键词	Intermetallics Intermetallics Suction Casting Suction Casting Microstructure Microstructure Mechanical Properties Mechanical Properties Compressive Properties Compressive Properties Site Substitution Site Substitution Nial-cr Nial-cr Composites Composites Elements Elements
URL	查看原文 ; 查看原文
WOS记录号	WOS:000272973000017 ; WOS:000272973000017
引用统计	被引频次：8[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/321006/32272
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Y. Sheng,J. T. Guo,W. Zhang,et al. Microstructure and mechanical properties of NiAl-Cr(Mo)-Hf/Ho near-eutectic alloy prepared by suction casting, Microstructure and mechanical properties of NiAl-Cr(Mo)-Hf/Ho near-eutectic alloy prepared by suction casting[J]. International Journal of Materials Research, International Journal of Materials Research,2009, 2009,100, 100(11):1602-1606, 1602-1606.
APA	L. Y. Sheng,J. T. Guo,W. Zhang,L. Z. Zhou,&H. Q. Ye.(2009).Microstructure and mechanical properties of NiAl-Cr(Mo)-Hf/Ho near-eutectic alloy prepared by suction casting.International Journal of Materials Research,100(11),1602-1606.
MLA	L. Y. Sheng,et al."Microstructure and mechanical properties of NiAl-Cr(Mo)-Hf/Ho near-eutectic alloy prepared by suction casting".International Journal of Materials Research 100.11(2009):1602-1606.