Effect of Alterative and Homogenization on the Microstructure of Cu-20Ni-5Sn Alloy
The serious dendritic segregation occurs in Cu-20Ni-5Sn alloy.The microstructure of Cu-20Ni-5Sn alloy as-cast is composed of white light dendrite (Cu-Ni solid solution),Sn-rich solid solution (Cu2Ni3Sn3 phase) and block light precipitation (Ni17Sn3 phase).The microstructure of Cu-20Ni-5Sn alloy affected by alterative and homogenization temperature was studied.The results show that the alterative can refine the microstructures of the Cu-20Ni-5Sn alloy and reduce the segregation of Sn.The grains are quite fine with 0.9%Wt alterative in the alloy.The homogenization temperature of the Cu-20Ni-5Sn alloy decreases with increase of alterative content in the alloy.Grains enlarged with the increase of homogenization temperature,and the secondary phase distributes became more evenly.The optimization condition of homogenization treatment is at 800℃ in 24h.
Cu-20Ni-5Sn alloy Alterative Dendritic segregation Homogenization
Wei Cai Shengli Yang Liang Chen Mengmeng Lu Yumin Liao
Material Science and Engineering School of Jiangxi University of Science and Technology,GanZhou, Jia Guangxi investment group Yinhai Aluminium Co., Ltd., Nanning, Guangxiiangxi, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
421-424
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）