Lattice Structures of AlSc and Their Effect on Interdiffusion

摘要：

　　The structures of AlSc with 50at.% and 55at.% Sc were investigated.It was shown that orthorhombic AlSc is formed at Sc 50at.%,and B2 AlSc at Sc 55at.%.After anealing above 1100 °C,the orthorhombic AlSc transited into B2 structure,which indicated that B2 AlSc can also be a metalstable phase in the alloy with Sc less than 50at.%.The effects of these two structures on the phases formation via inter-diffusion were also studied using diffusion couple with titanium and γ-TiAl.It was found that the interdiffusion coefficients are the main factors for Ti/AlSc and structures are the main factors for γ-TiAl/AlSc.

关键词： AlSc B2 Orthorhombic Diffusion couple

作者: Juan Li Feng Ye Li Huang Yongfeng Liang

作者单位: State Key Larboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, 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: 9-13

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）