Enrichment behavior of ω clusters in cold-drawn Ti-45Nb filaments
The enrichment behavior of ω clusters in cold-drawn Ti-45Nb (wt.％) filaments is observed and discussed in this paper. The ω phase precipitates as the colonies of almost the same orientation variants near the grain boundary with the size of single particle less than 3 nm in diameter. The enrichment of ω clusters leads to the formation of embrittlement regions in micron dimension along the grain boundary. After polishing and etching, the embrittlement regions transform into macroscopic necklace-like structure along the grain boundary. Furthermore, the volume fraction and mean width of embrittlement regions are measured accurately as a function of diameters. After recrystallization annealing, the enrichment regions disappear and ω particles equally distribute in the matrix.
Ti-45Nb ω phase filament enrichment annealing
Bin Tang Hongchao Kou Zhishou Zhu Jinshan Li Guoqiang Shang Lian Zhou
State key Laboratory of Solidification Processing,Northwestern Polytechnical University, Xi’an 71007 Beijing Institute of Aeronautical Materials, Beijing 100095, China State key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 7100
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
315-320
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）