期刊
MATERIALS LETTERS
卷 317, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2022.132111
关键词
New-phase; Microstructure; Crystal structure; Indentation and hardness
资金
- National Key RD Program [2016YFB0301000]
A new hexagonal phase AlZnY was discovered in the Mg-4Y-Al-3Zn alloy for the first time in this study, and its deformation behavior and hardness were evaluated, providing new data for the study of the Mg-Y-Al-Zn alloy system.
The composition of the phases in the Mg-Y-Al-Zn system is still ambiguous mainly because the elemental compositions of these phases are tested without studying the corresponding crystal structures. In the present work, a new hexagonal phase AlZnY (a = b = 8.9443 angstrom, c = 7.2111 angstrom, and alpha = beta = 90 degrees gamma = 120 degrees) was observed in the Mg-4Y-Al-3Zn alloy for the first time. The deformation behavior of the AlZnY phase was evaluated, the results show that it is a brittle phase with a hardness of 2.04-2.21 GPa. This study provides new data for the knowledge base of the Mg-Y-Al-Zn alloy system.
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