Asymmetrical Precipitation on the {10-12} Twin Boundary in the Magnesium Alloy

作者：Gu, Xin-Fu^*; Wang, Man; Shi, Zhang-Zhi; Chen, Leng; Yang, Ping

来源：Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 2018, 49A(10): 4446-4451.

DOI：10.1007/s11661-018-4863-1

• MG-AL ALLOY
• VARIANT SELECTION
• HETEROGENEOUS NUCLEATION
• MECHANICAL-PROPERTIES
• GRAIN-BOUNDARIES
• HIGH-STRENGTH
• MN ALLOY
• GD ALLOY
• CRYSTALLOGRAPHY
• DEFORMATION

Precipitation on deformation defects is essential for enhancing mechanical properties of age-hardenable alloys. In this work, we revealed how {10-12} twin boundary (TB) influences beta-Mg17Al12 precipitation in Mg-9Al-1Zn alloy. The precipitates on the TBs are rodlike, while others are lath shape. Most precipitates hold the Burgers orientation relationship (OR) only with twin or matrix. Moreover, certain precipitate variants are absent and a new rule for variant selection on TB is proposed.

• 出版日期2018-10
• 单位北京科技大学