Precipitation and Dissolution Behavior of δ Phase in Alloy GH4169G
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.
GH4169G alloy δ phase Precipitation Dissolution
Fang Liu Lianxu Yu Litao Chang Xin Xin Weihong Zhang Dang Jia Feng Qi Shengchao Li
Institute of Metal Research, Chinese Academy of Sciences,No. 72, Wenhua road,Shenhe District, Shenyang City, Liaoning Province, 110016, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
760-764
2012-07-13(万方平台首次上网日期,不代表论文的发表时间)