Microstructure and microsegregation of directionally solidified Ti-45Al-8Nb alloy with different solidification rates

• Published in: Rare metals Vol. 35; no. 1; pp. 70 - 76
• Main Authors: Xu, Xiang-Jun, Song, Lin, Jin, Xiao-Ou, Han, Dong-Dong, Wang, Xin, Lin, Jun-Pin
• Format: Journal Article
• Language: English
• Published: Beijing Nonferrous Metals Society of China 01.01.2016; Springer Nature B.V
• Subjects: Alloys; Biomaterials; Cellular structure; Chemistry and Materials Science; Dendritic structure; Directional solidification; Electron microscopy; Electron probes; Energy; Intermetallic phases; Materials Engineering; Materials Science; Metallic Materials; Microstructure; Morphology; Mushy zones; Nanoscale Science and Technology; Niobium; Physical Chemistry; Scanning electron microscopy; Solidification; Temperature; Titanium base alloys; Transmission electron microscopy; 一次枝晶间距; 元素偏析; 凝固微观组织; 凝固速率; 合金; 固化速率; 扫描电子显微镜; 透射电子显微镜; Microstructure; Nb-containing; TiAl alloy; Solidification; Microsegregation

Microstructure and microsegregation of directionally solidified Ti-45Al-8Nb alloy were investigated by scanning electron microscopy（SEM）,transmission electron microscopy（TEM） and electron probe microanalyzer（EPMA）.For the alloy solidified at the solidification rates（v） ranging from 10 to 400 μm·s~（-...