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Hot Compression of TC8M-1: Constitutive Equations, Processing Map, and Microstructure Evolution
Yue, Ke; Chen, Zhiyong; Liu, Jianrong; Wang, Qingjiang; Fang, Bo; Dou, Lijun; Chen, ZY (reprint author), Chinese Acad Sci, Div Titanium Alloys, Inst Met Res, Shenyang 110016, Peoples R China.
2016-06-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN1073-5623
Volume47AIssue:6Pages:3178-3192
AbstractHot compression of TC8M-1 was carried out under isothermal working conditions with temperature from 1173 K to 1323 K (900 A degrees C to 1050 A degrees C), strain rate from 0.001 to 10/s, and height reduction from 20 to 80 pct (corresponding true strain from 0.22 to 1.61). Constitutive equations were constructed and apparent activation energies of 149.5 and 617.4 kJ/mol were obtained for deformation in the beta and upper alpha/beta phase regions, respectively. Microstructure examination confirmed the dominant role of dynamic recrystallization in the alpha/beta phase region and that of dynamic recovery in the beta phase region, with the occurrence of grain boundary sliding at very low strain rate (0.001/s) in both regions. Based on the dynamic materials model, processing maps were constructed, providing optimal domains for hot working at the temperature of 1253 K (980 A degrees C) and the strain rate of 0.01 to 0.1/s, or at 1193 K to 1213 K (920 A degrees C to 940 A degrees C) and 0.001/s. Moreover, our results indicated that the initial temperature non-uniformity along the specimen axis before compression existed and influenced the strain distribution, which contributed to the abnormal oscillations and/or abrupt rise-up of true stress and inhomogeneous deformation.
description.department[yue, ke ; chen, zhiyong ; liu, jianrong ; wang, qingjiang] chinese acad sci, div titanium alloys, inst met res, shenyang 110016, peoples r china ; [fang, bo ; dou, lijun] avic shenyang liming aeroengine grp corp ltd, shenyang 110016, peoples r china
Subject AreaMaterials Science ; Metallurgy & Metallurgical Engineering
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75860
Collection中国科学院金属研究所
Corresponding AuthorChen, ZY (reprint author), Chinese Acad Sci, Div Titanium Alloys, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Yue, Ke,Chen, Zhiyong,Liu, Jianrong,et al. Hot Compression of TC8M-1: Constitutive Equations, Processing Map, and Microstructure Evolution[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2016,47A(6):3178-3192.
APA Yue, Ke.,Chen, Zhiyong.,Liu, Jianrong.,Wang, Qingjiang.,Fang, Bo.,...&Chen, ZY .(2016).Hot Compression of TC8M-1: Constitutive Equations, Processing Map, and Microstructure Evolution.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,47A(6),3178-3192.
MLA Yue, Ke,et al."Hot Compression of TC8M-1: Constitutive Equations, Processing Map, and Microstructure Evolution".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 47A.6(2016):3178-3192.
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