Effect of overheating treatment on the microstructure of NiAl-based alloy

IMR OpenIR

	Effect of overheating treatment on the microstructure of NiAl-based alloy; Effect of overheating treatment on the microstructure of NiAl-based alloy
	Y. C. Liang; J. T. Guo; L. Z. Zhou; C. L. Zhang; J. D. Lin
	2010 ; 2010
发表期刊	Materials Letters ; Materials Letters
ISSN	0167-577X ; 0167-577X
卷号	64 期号:15 页码:1707-1709
摘要	The effect of melt overheating treatment on the microstructure of the alloy NiAl-28Cr-5.9Mo-0.1Hf(at.%)-0.05Ho(wt.%) has been investigated. Overheating treatment resulted in the decrease of the amount of primary NiAl from 12% in the normal sample to 8% in the overheated sample and in the refinement of NiAl/Cr(Mo) lamellar. The size of eutectic cell was increased from 37 mu m to 63 mu m after the treatment. Another significant change of the microstructure was the morphological instability of precipitates: the morphology of Cr(Mo) precipitates in primary NiAl was dendritic in the normal alloy but was cubic/spherical in the overheated alloy. The mechanisms responsible for these changes were discussed. (C) 2010 Elsevier B.V. All rights reserved.; The effect of melt overheating treatment on the microstructure of the alloy NiAl-28Cr-5.9Mo-0.1Hf(at.%)-0.05Ho(wt.%) has been investigated. Overheating treatment resulted in the decrease of the amount of primary NiAl from 12% in the normal sample to 8% in the overheated sample and in the refinement of NiAl/Cr(Mo) lamellar. The size of eutectic cell was increased from 37 mu m to 63 mu m after the treatment. Another significant change of the microstructure was the morphological instability of precipitates: the morphology of Cr(Mo) precipitates in primary NiAl was dendritic in the normal alloy but was cubic/spherical in the overheated alloy. The mechanisms responsible for these changes were discussed. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[guo, jianting; zhou, lanzhang] chinese acad sci, inst met res, shenyang 110016, peoples r china. [liang, yongchun; zhang, chunlei; lin, jiedong] guangdong power grid corp, elect power res inst, guangzhou 510080, guangdong, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jtguo@imr.ac.cn ; [guo, jianting; zhou, lanzhang] chinese acad sci, inst met res, shenyang 110016, peoples r china. [liang, yongchun; zhang, chunlei; lin, jiedong] guangdong power grid corp, elect power res inst, guangzhou 510080, guangdong, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jtguo@imr.ac.cn
关键词	Nial-based Alloy Nial-based Alloy Intermetallics Intermetallics Overheating Treatment Overheating Treatment Microstructure Microstructure Mechanical-properties Mechanical-properties Al Alloys Al Alloys Superalloy Superalloy Stability Stability
URL	查看原文 ; 查看原文
WOS记录号	WOS:000279755800016 ; WOS:000279755800016
引用统计	被引频次：5[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/321006/31258
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. C. Liang,J. T. Guo,L. Z. Zhou,et al. Effect of overheating treatment on the microstructure of NiAl-based alloy, Effect of overheating treatment on the microstructure of NiAl-based alloy[J]. Materials Letters, Materials Letters,2010, 2010,64, 64(15):1707-1709, 1707-1709.
APA	Y. C. Liang,J. T. Guo,L. Z. Zhou,C. L. Zhang,&J. D. Lin.(2010).Effect of overheating treatment on the microstructure of NiAl-based alloy.Materials Letters,64(15),1707-1709.
MLA	Y. C. Liang,et al."Effect of overheating treatment on the microstructure of NiAl-based alloy".Materials Letters 64.15(2010):1707-1709.