Precipitation and Dissolution Behavior of δ Phase in Alloy GH4169G

摘要：

　　The precipitation and dissolution behavior of δ phase at varied states including as cast,heat treated and thermal processed of GH4169G alloy,have been investigated.The results indicated that δ phase existed in the vicinity of Laves phase and carbides with mainly the rod-like,needle-like morphology,and lath-like morphology because of the segregation of Nb in the interdendritic area.The amount of the δ phase decreased with the increase of the annealing temperature,and the dissolution rate increased with the increase of the annealing temperature.After initial holding of 2 h at 1020°C,the residual δ phase fully dissolved at 1140℃ for 20min for the as-cast ingot.The minimum holding time for δ phase dissolution at 1020℃was 2h.

关键词： GH4169G alloy δ phase Precipitation Dissolution

作者: Fang Liu Lianxu Yu Litao Chang Xin Xin Weihong Zhang Dang Jia Feng Qi Shengchao Li

作者单位: Institute of Metal Research, Chinese Academy of Sciences,No. 72, Wenhua road,Shenhe District, Shenyang City, Liaoning Province, 110016, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 760-764

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）