水平连铸AuGe12合金的组织及偏析  

Microstructure and Segregation of the Horizontal Continuous Casting of AuGe12 Alloy

作　　者：朱勇 阳岸恒 张济祥 邓志明 谢宏潮 孔建稳 

机构地区：[1]贵研铂业股份有限公司

出　　处：《特种铸造及有色合金》2015年第10期1077-1079,共3页Special Casting & Nonferrous Alloys

基　　金：国家科技支撑计划资助项目(2012BAE06B05)

摘　　要：采用水平连铸制备了AuGe12合金,重点考察了铸造过程中氮气量对铸锭合金组织和偏析的影响。结果表明,连铸过程中随着氮气通入量的增加,搅拌作用增强,使得熔融的Au-Ge合金晶枝细化,晶枝间距变短,逐步演变为等轴晶。且随着氮气通入量的增加,AuGe12合金的偏析程度明显改善。The AuGe12 alloy was prepared by horizontal continuous casting,and influence of the volume of nitrogen on microstructure and segregation of the alloy ingot was investigated.The results reveal that the dendrites in AuGe12 are refined to gradually begin to evolve into equiaxed state with the increase of volume of nitrogen to enhance the stirring.The increase of the volume of nitrogen can inhibit segregation of AuGe12 alloy,and significantly improve the degree of segregation AuGe12 alloy.

关 键 词：AuGe12合金 水平连铸 组织 偏析 

分 类 号：TG249.7[金属学及工艺—铸造]