A heat-treatable Mg-Al-Ca-Mn-Zn sheet alloy with good room temperature formability

SCRIPTA MATERIALIA

卷:138

Article

Bian, M. Z.¹  Sasaki, T. T.¹  Suh, B. C.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;    Guinier;    Preston zone;    Formability;    Strength;   

DOI  :  10.1016/j.scriptamat.2017.05.034

来源: Elsevier

【 摘 要 】

A newly developed magnesium sheet alloy, Mg-1.1Al-03Ca-0.2Mn-0.3Zn (at.%), shows a large Index Erichsen value of 7.7 mm in a solution treated (T4) condition due to a weak basal texture developed by the trace addition of Zn. Subsequent artificial aging at 200 degrees C for 1 h (T6) significantly increases the 0.2% proof strength from 144 MPa to 204 MPa. This improvement in strength by the T6 treatment is associated with a dense distribution of monoatomic layer Guinier-Preston zones on the basal planes of the Mg matrix. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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