期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2019.01.098
关键词
Magnesium alloy; Micro-alloying with Cd; Long-periodic stacking ordered (IPSO); Mechanical properties; Growth pattern
类别
资金
- National Natural Science Foundation of China [51474153, 51574175]
The effects of Cd addition on the microstructure and mechanical properties of Mg94Y2.5Zn2.5Mn1 alloy containing alpha-Mg matrix, W phase and 18R LPSO structure were systematically explored first. The results reveals that trace of Cd can refine alpha-Mg grain size and facilitate the formation of 18R LPSO structure efficiently, but suppress the growth of W-phase significantly. Moreover, the growth pattern of LPSO structure and W phase are changed from the coupled growth to divorced growth due to the Cd addition. The as-cast Mg94Y2.5Zn2.5Mn1Cd0.35 alloy exhibits the remarkable ultimate tensile strength (247 MPa) and outstanding elongation (16.5%), which is attributed to plentiful LPSO phase, grain refinement and transformation of growth pattern.
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