论文摘要
The detailed structures and the corresponding formation mechanisms of the well-known Al10RE2Mn7 phase in the conventional die-cast Mg–4Al–4RE–0.3Mn alloy were thoroughly investigated using transmission electron microscopy（TEM）. The results indicate that the Al10RE2Mn7 phase ordinarily contains both normal （111） twins and orientation twins.Both detailed TEM observations and density functional theory calculations indicate that the Al10RE2Mn7 phase is transferred from the Al8REMn4 phase following an orientation relationship as [010]Al8REMn4//[101]Al10RE2Mn7 and （101）Al8REMn4//（110）Al10RE2Mn7. Moreover, forming orientation twins in the Al10RE2Mn7 phase is attributed to the blurry regions at incoherent twin boundaries in the Al8REMn4 phase. Finally, these formed orientation twins result in the （111） twins in the Al10RE2Mn7phase.
论文目录
文章来源
类型: 期刊论文
作者: Qiang Yang,Shu-Hui Lv,Fan-Zhi Meng,Kai Guan,Bai-Shun Li,Xu-Hu Zhang,Jing-Qi Zhang,Xiao-Juan Liu,Jian Meng
来源: Acta Metallurgica Sinica(English Letters) 2019年02期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 金属学及金属工艺
单位: State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry, ChineseAcademy of Sciences,School of Materials Science and Engineering, Changchun University of Science and Technology,University of Sciences and Technology of China,Aerospace Research Institute of Materials and Processing Technology
基金: supported financially by the National Natural Science Foundation of China(Nos.51701200,11804030 and 21521092),the Project for Science and Technology Development of Jilin Province(Nos.20180520004JH,201602011004GX,20170414001GH and 20180520160JH)
分类号: TG146.22
页码: 178-186
总页数: 9
文件大小: 1004K
下载量: 20