Constitutive equations of the minimum creep rate for 9% Cr heat resistant steels

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	Constitutive equations of the minimum creep rate for 9% Cr heat resistant steels
	Y. X. Chen ; W. Yan ; W. Wang ; Y. Y. Shan ; K. Yang
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2012
卷号	534 页码:649-653
关键词	9% Cr heat resistant steels Minimum creep rate Premature failure ferritic steels strength behavior stress rupture breakdown fracture
ISSN号	0921-5093
中文摘要	This study addresses the overestimation of the time-temperature-parameter (TTP) method on the allowable creep strength of 9-12% Cr heat resistant steels. Creep data of 9% Cr heat resistant steels are divided into several data sets according to the creep controlling mechanism. Constitutive equations of the minimum creep rate (epsilon)over dot(m) depending on applied stress sigma and temperature T have been constructed, and the modeling results are found to be well in agreement with the experimental data. The influence of the second phase particles in the power-law-breakdown (PLB) region on 9% Cr heat resistant steels is well reflected by introducing a parameter, sigma(0), into the equation. Furthermore, the construction of constitutive equations of (epsilon)over dot(m) from the PLB region to the power-law (PL) region for 9% Cr heat resistant steels has been shown to be feasible. (C) 2011 Elsevier B.V. All rights reserved.
原文出处	://WOS:000301989600081
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/59913]
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	Y. X. Chen,W. Yan,W. Wang,et al. Constitutive equations of the minimum creep rate for 9% Cr heat resistant steels[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2012,534:649-653.
APA	Y. X. Chen,W. Yan,W. Wang,Y. Y. Shan,&K. Yang.(2012).Constitutive equations of the minimum creep rate for 9% Cr heat resistant steels.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,534,649-653.
MLA	Y. X. Chen,et al."Constitutive equations of the minimum creep rate for 9% Cr heat resistant steels".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 534(2012):649-653.