High strength and formable Mg-6.2Zn-0.5Zr-0.2Ca alloy sheet processed by twin roll casting

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

卷:609

Article

Bhattacharjee, T.^1,2  Suh, B-C³  Sasaki, T. T.²  Ohkubo, T.²  Kim, N. J.⁴  Hono, K.^1,2 

[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058577, Japan

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

[3] POSTECH, Ctr Adv Aerosp Mat, Pohang 790784, South Korea

[4] POSTECH, Grad Inst Ferrous Technol & CAAM, Pohang 790784, South Korea

关键词: Mg-Zn alloy;    Age hardening;    Precipitation;    Twin roll cast;    ZK60;   

DOI  :  10.1016/j.msea.2014.04.058

来源: Elsevier

【 摘 要 】

Twin roll cast and hot rolled Mg-6.2 wt%Zn alloys microalloyed with Zr, Ca, and Ag show tensile yield strength exceeding 300 MPa in the T6 (peak-aged) condition with reasonable formability in the T4 condition. The addition of Zr and Ca plays a critical role in the development of weak textured recrystallized microstructure in Mg-6.2 wt%Zn alloys so Mg-6.2Zn-0.5Zr-0.2Ca (wt%) alloy shows equivalent mechanical properties with Mg-6.2Zn-0.5Zr-0.2Ca-0.4Ag (wt%) alloy even without expensive Ag. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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