Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 degrees C temperature range

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	Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 degrees C temperature range; Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 degrees C temperature range
	L. Z. Zhou; V. Lupinc; J. T. Guo
	2003 ; 2003
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing ; Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093 ; 0921-5093
卷号	354 期号:1-2 页码:97-105
摘要	gamma-TiAl intermetallic Ti-45Al-2W-0.5Si-0.5B was exposed in the temperature range of 800-980 degreesC, well over its intended application range, for up to 1000 h to test its thermal stability limit. It was found that, the fine alpha(2) laths could be broken down by growth of equiaxed gamma grains, transformation of alpha(2) to B2 phase, and coalescence of alpha(2) laths. With increasing of temperature, needle-like B2 phase became spheral, and its volume fraction increased due to the transformation Of alpha(2) to B2 phase. Addition of boron was demonstrated to be beneficial to the thermal stability of the lamellar structure, by the way of comparison to its boron-free counterpart ABB-2 alloy. Subsurface evolution during long-term aging was also investigated. (C) 2002 Published by Elsevier Science B.V.; gamma-TiAl intermetallic Ti-45Al-2W-0.5Si-0.5B was exposed in the temperature range of 800-980 degreesC, well over its intended application range, for up to 1000 h to test its thermal stability limit. It was found that, the fine alpha(2) laths could be broken down by growth of equiaxed gamma grains, transformation of alpha(2) to B2 phase, and coalescence of alpha(2) laths. With increasing of temperature, needle-like B2 phase became spheral, and its volume fraction increased due to the transformation Of alpha(2) to B2 phase. Addition of boron was demonstrated to be beneficial to the thermal stability of the lamellar structure, by the way of comparison to its boron-free counterpart ABB-2 alloy. Subsurface evolution during long-term aging was also investigated. (C) 2002 Published by Elsevier Science B.V.
部门归属	ieni, cnr, i-20125 milan, italy. chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhou, lz (reprint author), ieni, cnr, via r cozzi 53, i-20125 milan, italy ; ieni, cnr, i-20125 milan, italy. chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhou, lz (reprint author), ieni, cnr, via r cozzi 53, i-20125 milan, italy
关键词	Intermetallics Intermetallics Tial High-temperature Structural Materials Tial High-temperature Structural Materials Microstructure Microstructure Thermal Stability Thermal Stability Orientation Relationship Orientation Relationship Ti-47al-2w-0.5si Alloy Ti-47al-2w-0.5si Alloy Titanium Aluminides Titanium Aluminides Tial Alloys Tial Alloys Exposure Exposure
URL	查看原文 ; 查看原文
WOS记录号	WOS:000183840700012 ; WOS:000183840700012
引用统计	被引频次：24[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/321006/36216
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Z. Zhou,V. Lupinc,J. T. Guo. Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 degrees C temperature range, Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 degrees C temperature range[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2003, 2003,354, 354(1-2):97-105, 97-105.
APA	L. Z. Zhou,V. Lupinc,&J. T. Guo.(2003).Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 degrees C temperature range.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,354(1-2),97-105.
MLA	L. Z. Zhou,et al."Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 degrees C temperature range".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 354.1-2(2003):97-105.