Decomposition of primary MC carbide and its effects on the fracture behaviors of a cast Ni-base superalloy

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	Decomposition of primary MC carbide and its effects on the fracture behaviors of a cast Ni-base superalloy
	X. Z. Qin ; J. T. Guo ; C. Yuan ; C. L. Chen ; J. S. Hou ; H. Q. Ye
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2008
卷号	485 期号:1-2 页码:74-79
关键词	Ni-base superalloy thermal exposure carbides MC decomposition fracture property diffusion mechanism sx-superalloys creep microstructure precipitation elements rupture ni3al
ISSN号	0921-5093
中文摘要	Primary MC degeneration in long-term thermally exposed cast Ni-base superalloy K452 was investigated in detail. It is shown that the primary MC degeneration is a diffusion-controlled process where various transformation products are sequentially present within the reaction region during exposure. The primary MC degeneration produces a DM or SM microstructure on the MC/gamma interface at the initiation of exposure, which hinders the diffusion of alloying elements via its ordered gamma' layers and leads to the presence of the eta and alpha-(W, Mo) phases, respectively during the intermediate and late exposure. In addition, the primary MC deterioration is examined to be detrimental to the long-term thermally exposed alloy due to its contribution to the cracking incidence especially when the MC is present at the grain boundaries. (C) 2007 Elsevier B.V. All rights reserved.
原文出处	://WOS:000256194300011
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33054]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Z. Qin,J. T. Guo,C. Yuan,et al. Decomposition of primary MC carbide and its effects on the fracture behaviors of a cast Ni-base superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,485(1-2):74-79.
APA	X. Z. Qin,J. T. Guo,C. Yuan,C. L. Chen,J. S. Hou,&H. Q. Ye.(2008).Decomposition of primary MC carbide and its effects on the fracture behaviors of a cast Ni-base superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,485(1-2),74-79.
MLA	X. Z. Qin,et al."Decomposition of primary MC carbide and its effects on the fracture behaviors of a cast Ni-base superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 485.1-2(2008):74-79.