Flow behavior and processing map for hot deformation of ATI425 titanium alloy

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	Flow behavior and processing map for hot deformation of ATI425 titanium alloy
	Meng, QG; Bai, CG; Xu, DS; Bai, CG (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2018-04-01
卷号	34 期号:4 页码:679-688
关键词	Constitutive Equation Instability Criteria Elevated-temperature Zr Alloy Microstructure Working
ISSN号	1005-0302
英文摘要	Flow behavior and processing map play important roles in the hot deformation process of titanium alloys. In this research, compression Gleeble tests have been carried out to investigate the stress-strain relationship at temperatures ranging from 700 to 1000 degrees C and strain rates ranging from 0.001 to 1 s(-1) for ATI 425 titanium alloy. Arrhenius type constitutive equation was obtained to describe the compressive flow behavior with modification of additional deformation dead zone, friction model, temperature model and strain rate. The introduction of novel calculation method for alpha value in Arrhenius equation gives more accurate fitting than traditional one. Processing maps were drawn based on the distribution of dissipator co-content, and optimized deformation temperature and strain rate range obtained. It is proven to be accurate and effective through the experimental results. The microstructure analysis shows that more dynamic recrystallization can be achieved in the area with larger eta value on the processing map. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.; Flow behavior and processing map play important roles in the hot deformation process of titanium alloys. In this research, compression Gleeble tests have been carried out to investigate the stress-strain relationship at temperatures ranging from 700 to 1000 degrees C and strain rates ranging from 0.001 to 1 s(-1) for ATI 425 titanium alloy. Arrhenius type constitutive equation was obtained to describe the compressive flow behavior with modification of additional deformation dead zone, friction model, temperature model and strain rate. The introduction of novel calculation method for alpha value in Arrhenius equation gives more accurate fitting than traditional one. Processing maps were drawn based on the distribution of dissipator co-content, and optimized deformation temperature and strain rate range obtained. It is proven to be accurate and effective through the experimental results. The microstructure analysis shows that more dynamic recrystallization can be achieved in the area with larger eta value on the processing map. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79400]
专题	金属研究所_中国科学院金属研究所
通讯作者	Bai, CG (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Meng, QG,Bai, CG,Xu, DS,et al. Flow behavior and processing map for hot deformation of ATI425 titanium alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(4):679-688.
APA	Meng, QG,Bai, CG,Xu, DS,&Bai, CG .(2018).Flow behavior and processing map for hot deformation of ATI425 titanium alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(4),679-688.
MLA	Meng, QG,et al."Flow behavior and processing map for hot deformation of ATI425 titanium alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.4(2018):679-688.