Effects of cold rolling and solid solution treatments on mechanical properties of β-phase Mg-14.3Li-0.8Zn alloy

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

卷:552

Article

Wu, S. K.²  Wang, J. Y.¹  Lin, K. C.²  Bor, H. Y.³ 

[1] Natl Dong Hwa Univ, Dept Mat Sci & Engn, Hwa Lian 974, Taiwan

[2] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan

[3] Chung Shan Inst Sci & Technol, Met Sect, Mat & Optoelect Res Div, Tao Yuan 325, Taiwan

关键词: Magnesium alloy;    Mechanical properties;    Cold-rolling;    Solid-solution treatment;    Strengthening effect;   

DOI  :  10.1016/j.msea.2012.04.118

来源: Elsevier

【 摘 要 】

Cold rolled and solid-soluted (SS) treatments are employed to improve mechanical properties of ultra-light Mg-14.3Li-0.8Zn (LZ141) alloy. As-homogenized LZ141 alloy is mainly beta-phase with few alpha-phase particles and exhibits quite good workability. Its tensile strength, elongation and hardness are 122 MPa, 40% and 41.6 Hv, respectively. For the specimen SS at 400 degrees C x 40 min and a subsequent 80% cold-rolling, the alloy's tensile strength, elongation and hardness are 227 MPa, 33% and 61.0 Hv, respectively. XRD tests reveal that, for the severely cold-rolled specimen, the preferred orientation changes, while for the SS specimen, it remains unchanged. The duplex strengthening effect of solid-solution with subsequently severe cold-rolling can significantly improve mechanical properties of LZ141 alloy. (C) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

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