Precipitation behavior of 14H-LPSO structure in Mg–12Gd–2Er–1Zn–0.6Zr Alloy

查看全文 作　　者：Kai [1]Wen;Wen-Bo [1]Du;Ke [1]Liu;Zhao-Hui [1]Wang;Shu-Bo [1]Li

机构地区：[1]College of Materials Science and Engineering, Beijing University of Technology

出　　处：《Rare Metals》索引2016年第35卷第5期,共7页

基　　金：financially supported by the Projects of Beijing Municipal Science and Technology Commission (No. Z131100003213019);the Projects of Beijing Municipal Commission of Education (Nos. KM201110005001 and KM201310005001);Beijing Natural Science Foundation (No. 2144043) 摘　　要：The microstructures of as-cast and as-solution Mg–12Gd–2Er–1Zn–0.6Zr alloys were investigated by optical microscopy(OM), scanning electron microscopy(SEM), transmission electron microscopy(TEM), highresolution transmission electron microscopy(HRTEM)X-ray diffraction(XRD) and selected-area electron diffraction(SAED) in the present investigation. The results show that the primary eutectic phase Mg_5(Gd, Er, Zn) and some flocculent features are found in the as-cast alloy; the SAED pattern indicates that these flocculent features are the dense areas of stacking faults. The 14H-LPSO structure precipitates in the temperature range of 673–793 K, and the volume fraction of 14H-LPSO structure increases with the extension of heating time; however, there is no precipitation of 14H-LPSO structure when the temperature reaches up to 803 K. In addition, the Mg_5(Gd, Er, Zn) phase dissolves gradually along with the precipitation of 14H-LPSO structure. 关键词：铸态合金结构相析出行为扫描电子显微镜透射电子显微镜高分辨透射电镜 HRTEM 选区电子衍射

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Precipitation behavior of 14H-LPSO structure in Mg–12Gd–2Er–1Zn–0.6Zr Alloy

参考文献(34)

引证文献(6)

耦合文献(21)

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