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논문 기본 정보

자료유형
학술저널
저자정보
Fubao Liu (Changsha Social Work College) Xiao Liu (Hunan University of Science and Technology) Biwu Zhu (Hunan University of Science and Technology) Hui Yang (Changsha Social Work College) Gang Xiao (Jiangxi University of Applied Science) Mingyue Hu (Changsha Social Work College)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.6
발행연도
2022.6
수록면
1,361 - 1,371 (11page)
DOI
10.1007/s12540-021-00996-7

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초록· 키워드

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High strain-rate rolling (≥ 10 s?1) has been successfully employed to produce AZ31 magnesium alloy sheets to a high reductionof 82% with a fine grain structure in a single pass. The rolled sheets inevitably undertake various forming processessuch as press and deep forming in the fabrication stage. To investigate the formability, the Erichsen tests were carried out onhigh strain rate rolled AZ31 magnesium alloy sheets at room temperature. The relationship among mechanical properties,microstructure and formability were investigated. The crack behavior during Erichsen tests was also studied. It was foundthat the formability was related to the lowest in-plane tensile strengthen and dislocation density of initial microstructure. The competitive relationship between micro-crack and twinning/shear bands would also influence the formability of highstrain rate rolled magnesium alloy sheets. Deformed shear band with substaintial twins prohibits the crack extension andenhances strengthen of materials in front of crack tip.

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