Hot Deformation Behavior and Flow Stress Prediction of Ultra Purified 17% Cr Ferritic Stainless Steel Stabilized with Nb and Ti

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	Hot Deformation Behavior and Flow Stress Prediction of Ultra Purified 17% Cr Ferritic Stainless Steel Stabilized with Nb and Ti
其他题名	Hot Deformation Behavior and Flow Stress Prediction of Ultra Purified 17% Cr Ferritic Stainless Steel Stabilized with Nb and Ti
	Gao Fei 1; Yu Fuxiao 1; Liu Haitao 2; Liu Zhenyu 2
	2015
发表期刊	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN	1006-706X
卷号	22 期号:9 页码:827-836
摘要	The hot deformation behavior of ultra purified 17% Cr ferritic stainless steel stabilized with Nb and Ti was investigated using axisymmetric hot compression tests on a thermomechanical simulator. The deformation was carried out at the temperatures ranging from 700 to 1 100 degrees C and strain rates from 1 to 10 s(-1). The microstructure was investigated using electron backscattering diffraction. The effects of temperature and strain rate on deformation behavior were represented by Zener-Hollomon parameter in an exponent type equation. The effect of strain was incorporated in the constitutive equation by establishing polynomial relationship between the material constants and strain. A sixth order polynomial was suitable to represent the effect of strain. The modified constitutive equation considering the effect of strain was developed and could predict the flow stress throughout the deformation conditions except at 800 degrees C in 1 s(-1) and at 700 degrees C in 5 and 10 s(-1). Losing the reliability of the modified constitutive equation was possibly ascribed to the increase in average Taylor factor at 800 degrees C in 1 s(-1) and the increase in temperature at 700 degrees C in 5 and 10 s(-1) during hot deformation. The optimum window for improving product quality of the ferritic stainless steels was identified as hot rolling at a low finisher entry temperature of 700 degrees C, which can be achieved in practical production.
其他摘要	The hot deformation behavior of ultra purified 17% Cr ferritic stainless steel stabilized with Nb and Ti was investigated using axisymmetric hot compression tests on a thermomechanical simulator. The deformation was carried out at the temperatures ranging from 700 to 1 100 ℃ and strain rates from 1 to 10 s~(-1). The microstructure was investigated using electron backscattering diffraction. The effects of temperature and strain rate on deformation behavior were represented by Zener-Hollomon parameter in an exponent type equation. The effect of strain was incorporated in the constitutive equation by establishing polynomial relationship between the material constants and strain. A sixth order polynomial was suitable to represent the effect of strain. The modified constitutive equation considering the effect of strain was developed and could predict the flow stress throughout the deformation conditions except at 800 ℃ in 1 s~(-1) and at 700 ℃ in 5 and 10 s~(-1). Losing the reliability of the modified constitutive equation was possibly ascribed to the increase in average Taylor factor at 800 ℃ in 1 s~(-1) and the increase in temperature at 700 ℃ in 5 and 10 s~(-1) during hot deformation. The optimum window for improving product quality of the ferritic stainless steels was identified as hot rolling at a low finisher entry temperature of 700 ℃, which can be achieved in practical production.
关键词	ELEVATED-TEMPERATURE 42CRMO STEEL CONSTITUTIVE-EQUATIONS ROLLING TEMPERATURES TEXTURE DEVELOPMENT STICKING BEHAVIOR STRAIN-RATE FORMABILITY EVOLUTION ALLOYS 17%Cr ferritic stainless steel hot deformation flow stress constitutive equation strain compensation
收录类别	CSCD
语种	英语
资助项目	[National Science and Technology Pillar Program] ; [National Natural Science Foundation of China]
CSCD记录号	CSCD:5517483
引用统计	被引频次：5[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/148911
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.东北大学
推荐引用方式 GB/T 7714	Gao Fei,Yu Fuxiao,Liu Haitao,et al. Hot Deformation Behavior and Flow Stress Prediction of Ultra Purified 17% Cr Ferritic Stainless Steel Stabilized with Nb and Ti[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2015,22(9):827-836.
APA	Gao Fei,Yu Fuxiao,Liu Haitao,&Liu Zhenyu.(2015).Hot Deformation Behavior and Flow Stress Prediction of Ultra Purified 17% Cr Ferritic Stainless Steel Stabilized with Nb and Ti.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,22(9),827-836.
MLA	Gao Fei,et al."Hot Deformation Behavior and Flow Stress Prediction of Ultra Purified 17% Cr Ferritic Stainless Steel Stabilized with Nb and Ti".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 22.9(2015):827-836.