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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.
2018-04-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume34Issue:4Pages:679-688
AbstractFlow 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.
description.department[meng, qinggang ; bai, chunguang ; xu, dongsheng] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china
KeywordConstitutive Equation Instability Criteria Elevated-temperature Zr Alloy Microstructure Working
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79400
Collection中国科学院金属研究所
Corresponding AuthorBai, CG (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
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.
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