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Microstructure and finite element analysis of hot continuous rolling of doped tungsten rod
Shao, Zheng-jie; Liu, Hai-po; He, Xiao-chun; Zhou, Bing; Li, Yang; Zhang, Shang-zhou; Li, Meng-jin; Li, Shu-jun
2019-03-01
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume26Issue:3Pages:369-376
AbstractThe microstructures of doped tungsten deformed by multi-pass hot continuous rolling were investigated, and the stress and strain fields were simulated by finite element (FE) method. After the continuous rolling, the grains of the tungsten rod were refined, and the microhardness was improved; however, a ring region of abnormal grain growth was present at a distance of about 3/5R (R is the radius of the rod) from the center of the cross section. FE modeling results showed that the equivalent residual strains were minimum around the region of abnormal grain growth; this was due to the release of strain energy by severe plastic deformation, leading a situation where the migration force of grain boundaries was higher than the pinning force of potassium bubbles. By decreasing the initial rolling temperature and rolling speeds, the inhomogeneity of the equivalent residual stain decreased, improving the microstructure uniformity of the doped tungsten.
Keyworddoped tungsten continuous rolling microstructure finite element analysis equivalent residual strain
Indexed BySCI
Language英语
WOS IDWOS:000460845000013
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81309
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Shao, Zheng-jie,Liu, Hai-po,He, Xiao-chun,et al. Microstructure and finite element analysis of hot continuous rolling of doped tungsten rod[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2019,26(3):369-376.
APA Shao, Zheng-jie.,Liu, Hai-po.,He, Xiao-chun.,Zhou, Bing.,Li, Yang.,...&Li, Shu-jun.(2019).Microstructure and finite element analysis of hot continuous rolling of doped tungsten rod.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,26(3),369-376.
MLA Shao, Zheng-jie,et al."Microstructure and finite element analysis of hot continuous rolling of doped tungsten rod".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 26.3(2019):369-376.
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