Effects of rolling conditions on the microstructure and mechanical properties in a Mg-Al-Ca-Mn-Zn alloy sheet

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:730

Article

Bian, M. Z.¹  Sasaki, T. T.¹  Nakata, T.²  Kamado, S.²  Hono, K.^1,3 

[1] Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan

[2] Nagaoka Univ Technol, 1603-1 Kamitomioka, Nagaoka, Niigata 9402188, Japan

[3] Univ Tsukuba, Grad Sch Pure & Appl Sci, 1-1 Tenno Dai, Tsukuba, Ibaraki 3050001, Japan

关键词: Magnesium alloys;    Rolling;    Stretch formability;    Texture;    Grain size;   

DOI  :  10.1016/j.msea.2018.05.065

来源: Elsevier

【 摘 要 】

Mg-1.2Al-0.3Ca-0.4Mn-0.3Zn (AXMZ1000) (wt%) alloy was rolled in three different conditions in order to understand the effects of the rolling conditions on the microstructure and mechanical properties. The sheet subjected to high temperature reheating at 500 degrees C for 5 min prior to each 100 degrees C rolling delivers the highest Index Erichsen (I.E.) value of 7.0 mm. The sheet rolled at 300 degrees C with 500 degrees C reheating for 5 min delivers the lowest I.E value of 5.4 mm, while the sheet continuously rolled at the same temperature shows a moderate I.E. value of 6.0 mm. Systematic observations of the microstructures of T4-treated and 3 mm stretched formed samples reveal that the large stretch formability of the sheet rolled at 100 degrees C with 500 degrees C reheating is associated the weak basal texture and fine-grained microstructure.

【 授权许可】

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