Thermal Stability, Glass-Forming Ability and Mechanical Properties of Mg-Y-Zn-Cu Glassy Alloys
Thermal Stability, Glass-Forming Ability and Mechanical Properties of Mg-Y-Zn-Cu Glassy Alloys
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Mg-Y-Zn-Cu非晶合金的热稳定性、非晶能力和力学性能
DOI：
10.2320/matertrans.44.2271
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发表时间：
2003
影响因子：
1.2
通讯作者：
A. Inoue
中科院分区：
文献类型：
--
作者：
G. Yuan;Tao Zhang;A. Inoue
研究了熔融纺丝法和铜模铸造法制备的Mg-Y-Zn（-Cu）基合金的热稳定性、玻璃形成能力和力学性能。Mg-Y-Zn三元非晶合金的非晶成形能力不高，不能用铜模铸造法形成大块的非晶合金。加入Cu形成Mg65Y10Zn25 × xCux （x¼0 ~ 25 at%）季系合金，使非晶相的GFA和热稳定性显著提高。Mg65Y10Zn5Cu20块状玻璃合金的抗压断裂强度、杨氏模量和塑性均高于Mg65Y10Cu25块状玻璃合金，但GFA略低于Mg65Y10Cu25合金。
We examined the thermal stability, glass-forming ability (GFA) and mechanical properties of Mg-Y-Zn(-Cu) base alloys produced by melt-spinning and copper mold casting methods. The glass-forming ability of Mg-Y-Zn ternary glassy alloys was not high enough to form a bulk glassy alloy by the copper mold casting method. The Cu addition to form the Mg65Y10Zn25� xCux (x ¼ 0 to 25 at%) quaternary alloys resulted in a significant increase in GFA and thermal stability of the amorphous phase. The compressive fracture strength, Young’s modulus and ductility of the Mg65Y10Zn5Cu20 bulk glassy alloy are higher than those of Mg65Y10Cu25 bulk glassy alloy, although the GFA of the Mg65Y10Zn5Cu20 alloy is slightly lower than that of the Mg65Y10Cu25 alloy.