Al-0.30%Sc-Zn-Cu四元系富铝角450℃等温截面的相关系  

Phase Relations in Al-0.30%Sc-Zn-Cu Quaternary System in Aluminum-Rich Region at 450 ℃

作　　者：戴晓元[1,2] 石志豪[1] 寇莉莉[1] 熊亮[1] 

机构地区：[1]长沙理工大学汽车与机械工程学院,湖南长沙410114 [2]北京科技大学新金属材料国家重点实验室,北京100083

出　　处：《中国稀土学报》2013年第2期155-160,共6页Journal of the Chinese Society of Rare Earths

基　　金：湖南省自然科学基金资助项目(12JJ2023);新金属材料国家重点实验室开放基金资助项目(2010Z-03)

摘　　要：采用合金法,通过扫描电镜组织观察、能谱分析和X射线衍射分析测定Al-0.30%(质量分数)Sc-Zn-Cu四元系富Al角450℃等温截面的相关系。结果表明:在Al-0.30%Sc-Zn-Cu四元450℃等温截面图中存在α(Al)+Al3Sc,α(Al)+W两个两相区,α(Al)+Al3Sc+W一个三相区。450℃时,Al-0.3%Sc-Zn-Cu四元系中W相的出现取决于Cu含量;当Cu含量大于1.0%,该四元系出现W相;Cu含量处在1.0%～3.0%,α(Al),Al3Sc和W三相共存;当Cu含量大于4.0%,α(Al)和W两相共存,Al3Sc相不出现。The phase relations in the Al-0.30 %Sc-Zn-Cu quaternary system in the Al-rich region at 450 ℃ were determined by means of equilibrium alloys with scanning electron microscope （ SEM ）, energy spectrum analysis and X-ray diffraction analysis. The result showed that there were two two-phase fields （ α （Al） ＋ Al3 Sc, α （Al） ＋ W） and one three-phase field （ α （Al） ＋ Al3 Sc ＋ W） in the enlarging isothermal section of the Al-0.30% Sc-Zn-Cu system in the Al-rich range at 450 ℃. At 450 ℃, the emergence of W phase depended on the content of Cu. When the content of Cu was greater than 1.0%, there was W phase in Al-0.30% Sc-Zn-Cu system. When the content of Cu was between 1.0% and 3.0%, there were α（Al） , Al3Sc and W phase in the studied quaternary system. When the content of Cu was greater than 4. 0%, Al3Sc phase would not appear.

关 键 词：相图 Al-0 30%Sc-Zn-Cu四元系 等温截面 稀土 

分 类 号：TG113.14[金属学及工艺—物理冶金]