Texture tailoring and bendability improvement of rolled AZ31 alloy using {10-12} twinning: The effect of precompression levels

• 作者: Byoung Gi Moon Jeong Hun Lee Jong Un Lee Min-Seong Kim Sang-Hoon Kim Shi-Hoon Choi Sung Hyuk Park Ye Jin Kim Young Min Kim
• 来源期刊: 镁合金学报(英文)
• 学科: 工学
• 关键词: Magnesium Bending FORMABILITY TWINNING TEXTURE
• 年，卷（期）: 2019,（4）
• 页码范围: 648-660
• 页数: 13页
• 分类号: TG1

摘要

In this study,the texture of a rolled Mg alloy is effectively modified through the application of precompression and subsequent annealing treatment,leading to a remarkable improvement in the bending formability of the alloy at room temperature.Precompression induces lattice reorientation through{10-12}twinning,and annealing treatment reduces the stored strain energy of the precompressed material,which results in the formation of a stable grain structure with two dominant texture components.With an increase in precompression,the tensile strain in the outer region of the bending samples is accommodated to a greater extent due to more pronounced{10-12}twinning and basal slip.As a result,the bending formability of the material at room temperature improves with greater precompression.The variation in microstructure,texture,and bending behavior in relation to the degree of precompression is discussed in detail.