陈蓉,胥钧耀,张丁非,余大亮,冯靖凯.不同Y含量对ZM21镁合金组织和力学性能的影响[J].稀有金属材料与工程,2019,48(7):2084~2090.[chen Rong,Xu Junyao,Zhang Dingfei,Yu Daliang,Feng Jingkai.Effect of Y on the microstructure and mechanical properties of Mg-2Zn-1Mn alloy[J].Rare Metal Materials and Engineering,2019,48(7):2084~2090.]
不同Y含量对ZM21镁合金组织和力学性能的影响
投稿时间:2018-02-04  修订日期:2018-05-09
中文关键词:  Mg-Zn-Mn合金  稀土Y  显微组织  力学性能  织构
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目),国家重点基础研究发展计划(973计划)
中文摘要:
      本文主要通过OM、SEM、EDS和XRD等研究了铸态及挤压态Mg-2Zn-1Mn-xY (Y=0,0.8,2.2,wt.%) 镁合金显微组织和力学性能。由实验结果可知,稀土Y的添加,不仅可以细化铸态及挤压态合金晶粒,还可以弱化挤压态合金的基面织构强度,从而同时提高合金的强度以及韧性。本文中最优化合金挤压态Mg-2Zn-1Mn-xY合金具有良好的力学性能,与原始Mg-2Zn-1Mn合金相比,屈服强度从164MPa提高到204MPa、抗拉强度从237MPa提高到298MPa以及延伸率从12%增加到18%。
Effect of Y on the microstructure and mechanical properties of Mg-2Zn-1Mn alloy
英文关键词:Mg-Zn-Mn alloy  Yttrium  microstructure  mechanical properties  texture
英文摘要:
      The microstructure and mechanical response of as-cast and extruded Mg-2Zn-1Mn-xY alloys (Y content of 0, 0.8 and 2.2 wt.%) have been investigated by optical microscope (OM), scanning electron microscope (SEM) with X-ray energy dispersive spectrometer (EDS), and X-ray diffractometer (XRD). The experiment results reveal that the addition of Y not only decrease the grain sizes of both as-cast and extruded alloys, but also effectively reduce the basal texture intensity of extruded alloys. These are two key reasons for the improvement of the strength and ductility of Mg-2Zn-1Mn-xY alloys, simultaneously. The optimized Mg-2Zn-1Mn-xY alloys after extrusion exhibits an attractive mechanical performance. Compared with the matrix material Mg-2Zn-1Mn, its yield strength increases from 164 MPa to 204 MPa, the ultimate tensile strength increases from 237 MPa to 298 MPa and the elongation increases from 12% to 18%.
作者单位E-mail
陈蓉 重庆大学 chenrong00523@163.com 
胥钧耀 重庆大学 junyaoxu@cqu.edu.cn 
张丁非 重庆大学 zhangdingfei@cqu.edu.cn 
余大亮 重庆科技学院  
冯靖凯 重庆大学  
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