Grain Competition Mechanism of a Ni3Al-based Single Crystal Superalloy IC6SX

摘要：

　　The grain competitive growth and elimination during the directional solidification of aNi3Al-base single crystal superalloy IC6SX prepared by spiral grain selection method was studied systematically.The experimental results revealed that there were 5 kinds of mechanism during thegrain competitive growth and elimination.The grains with preferred growth direction and smaller deviation angle to growth direction have stronger competitiveness,and the mutual thwarting ofdendrites played an important role in the processing of grainscompetitive growth.The results can explain the competitive growth mechanism during the directional solidification and can be used tooptimize processing parameters to lay an important foundation for improving preparation processes of single crystal superalloys.

关键词： Ni3Al-based Single crystal superalloy Grain competition mechanism IC6SX

作者: Liwu Jiang Shusuo Li Meiling Wu Yafang Han

作者单位: National Center for Materials Service Safety, University of Science and Technology Beijing,Beijing 1 National Center for Materials Service Safety, University of Science and Technology Beijing,Beijing 1

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: 797-803

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）