李其智,余 晖,王志峰,王岳宸,孟帅举,肖海涛,赵维民.快速凝固对微量Y添加Mg-4Al-2Zn合金显微组织,压缩性能及腐蚀行为的研究[J].稀有金属材料与工程,2019,47(3):1001~1007.[Li Qizhi,Yu Hui,Wang Zhifeng,Wang Yuechen,Meng Shuaiju,Xiao Haitao,Zhao Weimin.Effects of rapid solidification on the microstructural evolution, mechanical properties and corrosion behavior of Mg-4Al-2Zn alloys with various Y addition[J].Rare Metal Materials and Engineering,2019,47(3):1001~1007.]
快速凝固对微量Y添加Mg-4Al-2Zn合金显微组织,压缩性能及腐蚀行为的研究
投稿时间:2017-08-25  修订日期:2017-10-18
中文关键词:  镁合金  快速凝固  微观组织  力学性能  腐蚀行为
基金项目:国家自然科学基金(51701060),河北省自然科学基金优秀青年科学基金(E2016202130),河北省教育厅高等学校科学研究计划项目(QN2015035),河北工业大学优秀青年科技创新基金(2015002),国家外专局高端外国专家项目(GDW20171300102)
中文摘要:
      本文通过常规铸造与快速凝固法成功制得两类Mg-4Al-2Zn-xY(AZ42,x: 0.5, 1.0 wt.%)镁合金,并系统研究了快速凝固对微量Y添加后AZ42合金组织和性能的影响。研究结果表明,快速凝固工艺较传统铸造相比可显著细化AZ42合金的微观组织并提高合金的力学性能和耐腐蚀特性。AZ42合金加入Y元素后组织主要由α-Mg基体、β-Mg17Al12相和Al2Y相构成。此外,微量Y添加可显著细化AZ42合金的组织并改善网状β相分布,从而提高合金的力学与耐腐蚀性能;其中,当Y添加量为0.5%时可获得最佳综合性能。
Effects of rapid solidification on the microstructural evolution, mechanical properties and corrosion behavior of Mg-4Al-2Zn alloys with various Y addition
英文关键词:Magnesium alloy  rapid solidification  microstructure  mechanical properties  corrosion behavior
英文摘要:
      In present work, two kinds of Mg-4Al-2Zn alloy (AZ42) with minor addition of Y elements (0.5, 1.0 wt.%) were succesfully fabricated by gravity casting and rapid solidifaication process, respectively. In addition, microstructure, mechanical properties and corrosion behavior of AZ42 alloys with Y addition were systemetically investigated. The results show that rapid solidification technique can significantly refine the microstructure of AZ42 alloys containing Y and improve related mechanical properties and corrosion resistance compared with the traditional casting counterparts. The microstructure of Y-bearing AZ42 alloy is mainly composed of α-Mg matrix, β-Mg17Al12 phase and Al2Y phase. Moreover, the addition of Y in AZ42 alloy resulted in grain refinmenent and enhancement of both mechancial and corroison properties, which maybe attributed to fine grain size and distribution modification of β-phase. And the optimum amount of Y element in AZ42 alloy is determined to be 0.5 wt.%.
作者单位E-mail
李其智 河北工业大学 材料科学与工程学院 liqizhimail@163.com 
余 晖 河北工业大学 材料科学与工程学院  
王志峰 河北工业大学 材料科学与工程学院  
王岳宸 河北工业大学 材料科学与工程学院  
孟帅举 河北工业大学 材料科学与工程学院  
肖海涛 河北工业大学 材料科学与工程学院  
赵维民 河北工业大学 材料科学与工程学院  
摘要点击次数: 70
全文下载次数: 31
查看全文  查看/发表评论  
关闭