铸造2024，Vol.73Issue(9)：1233-1237,5.
准晶增强Mg-Zn-Y合金显微组织及凝固过程研究
Study on Microstructure and Solidification Process of Quasicrystal Reinforced Mg-Zn-Y Alloy
摘要
Abstract
The microstructure and solidification process of Mg-9.02Zn-1.68Y alloy were studied by SEM,XRD,DSC and Factsage 8.0 thermodynamic calculation software.The results show that the room temperature microstructure of Mg-9.02Zn-1.68Y alloy is mainly composed of α-Mg,quasicrystalline I-Mg7Zn6Y and Mg7Zn3.The solidification process of Mg-9.02Zn-1.68Y alloy is that dendritic α-Mg is crystallized first,then binary eutectic transformation takes place to form(α-Mg+I-Mg7Zn6Y)eutectic structure,and finally a small amount of(α-Mg+Mg7Zn3)eutectic structure is formed with the decrease of temperature.Due to the high content of quasicrystalline I-Mg3Zn6Y phase in the experimental alloy,the hardness of the alloy is HV70,which lays a good foundation for subsequent reprocessing or heat treatment.关键词
Mg-Zn-Y合金/准晶增强/显微组织/凝固过程Key words
Mg-Zn-Y alloy/quasicrystal strengthening/microstructure/solidification process分类
矿业与冶金引用本文复制引用
叶杰,林小娉,刘凤芳,付守军..准晶增强Mg-Zn-Y合金显微组织及凝固过程研究[J].铸造,2024,73(9):1233-1237,5.基金项目
中央高校基本科研业务费(N2323012) （N2323012）
河北省自然科学基金(E2022501001). （E2022501001）
