摘要
Cu Cr alloys containing Cr from 0.14% to 2.0% in mass were prepared as foils for TEM observation before and after being extruded. The results show that before extrusion, the spheroid or short bar chromium disperse in copper matrix of the Cu Cr alloy, and the relationship between Cu and Cr follows the Nishiyama Wasserman (NW) relationship, i.e. [110] Cu ∥ [001] Cr . After the Cu Cr alloy was extruded at 860 ℃, dark field image along (224) Cu clearly shows that there are precipitated chromium particles in copper matrix. However, the SADP comprises only (112) Cu zone.
Cu Cr alloys containing Cr from 0.14% to 2.0% in mass were prepared as foils for TEM observation before and after being extruded. The results show that before extrusion, the spheroid or short bar chromium disperse in copper matrix of the Cu Cr alloy, and the relationship between Cu and Cr follows the Nishiyama Wasserman (NW) relationship, i.e. [110] Cu ∥ [001] Cr . After the Cu Cr alloy was extruded at 860 ℃, dark field image along (224) Cu clearly shows that there are precipitated chromium particles in copper matrix. However, the SADP comprises only (112) Cu zone.
出处
《中国有色金属学会会刊：英文版》
CSCD
2003年第2期267-270,共4页
Transactions of Nonferrous Metals Society of China
基金
Project ( 2 0 0 0C3 0 )supportedbytheNaturalScienceFoundationofShaanxiProvince
China
关键词
析出
挤压
铜铬合金
铬
Cu Cr alloy
chromium precipitation
extrusion
