铸造技术2018，Vol.39Issue(2)：271-275,5.DOI:10.16410/j.issn1000-8365.2018.02.003
准晶I-相增强Mg-Zn-Y-Zr合金组织与力学性能研究
Microstructures and Mechanical Properties of Quasicrystal Reinforced Mg-Zn-Y-Zr Alloys
摘要
Abstract
Quasicrystal phase (I-phase) reinforced Mg-Zn-Y-Zr alloys were prepared by conventional solidification.The influence of Zn and Y content on the structure and mechanical properties of the as-cast alloy was studied with keeping Zn/Y (at％) ratio.The results show that the cast alloy is composed of the I-phase,laminar α-Mg/I-phase eutectic and α-Mg dendritic matrix.With the increase of Zn and Y content,the amorphous I-phase of the alloy and the lamellar α-Mg/I-phase eutectic gradually increase,but the grain size of the alloy decrease significantly.The hardness and tensile strength of as-cast alloys increase with the increase of the content of zinc and Y,the tensile strength is 216 MPa,the elongation with the increase of the content of zinc,Y show a downward trend after rising first,tensile fracture is cleavage fracture.关键词
Mg-Zn-Y-Zr/I-相/力学性能Key words
Mg-Zn-Y-Zr/I-phase/mechanical properties分类
矿业与冶金引用本文复制引用
卜志强,鲁若鹏,马军,田晋忠,侯华,赵宇宏..准晶I-相增强Mg-Zn-Y-Zr合金组织与力学性能研究[J].铸造技术,2018,39(2):271-275,5.基金项目
国家自然科学基金(No.51774254,51774253,51701187,U1610123,51674226,51574207,51574206),山西省科技重大专项(MC2016-06) （No.51774254,51774253,51701187,U1610123,51674226,51574207,51574206）
