Texture evolution and their effects on the mechanical properties of duplex Mg-Li alloy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:669

Article

Zou, Yun¹  Zhang, Lehao²  Wang, Hongtao³  Tong, Xin⁴  Zhang, Milin¹  Zhang, Zhongwu¹ 

[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China

[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[3] Zhejiang Univ, Inst Appl Mech, Hangzhou 310027, Zhejiang, Peoples R China

[4] Oak Ridge Natl Lab, Instrument & Source Div, Oak Ridge, TN 37831 USA

关键词: Duplex Mg-Li alloy;    Texture;    Deformation mode;    Pyramidal slip;    Mechanical properties;   

DOI  :  10.1016/j.jallcom.2016.01.174

来源: Elsevier

【 摘 要 】

Texture evolution is strongly dependent on the deformation mode during thermo-mechanical treatments. In this paper, we report the texture evolution in a duplex Mg-Li alloy. The results provide an evidence of deformation mode transition in the hexagonal-close-packed (hcp) alpha phase with various thickness reductions. The activation sequence of deformation modes is basal slip first, and then pyramidal slip during hot-rolling to a thickness reduction of 40%. The relative activity of slip decreases with further thickness reduction. After annealing, basal texture is strengthened and pyramidal component disappears due to static recrystallization and grain growth. The microstructure, specifically texture evolution in both hcp alpha and body-centered cubic (bcc) beta phase and their effects on mechanical properties are quantitatively analyzed and assessed. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free