Betα phase Decomposition during Ageing in Beta Ti Alloy with and without Carbon Additions
Phase transformations in beta Ti-13Cr with and without carbon have been studied by scanning electron microscopy and transmission electron microscopy and compared with those found in Ti-15-3 with and without carbon. This research focuses predominantly on the decomposition of meta-stable betα phase after quenching and during ageing. The omegα phase is formed prior to the alphα phase below 500℃ in Ti-13Cr, while alphα phase precipitates directly from betα phase above 500℃. There is no obvious influence of C on the scale or kinetics of omega precipitation although coarsening of omega is accelerated in the C-containing alloy. Nevertheless,no evidence for omegα phase has been obtained in Ti-15-3. Two types of alpha precipitates have been observed in Ti-13Cr.
Beta Ti phase transformation omegα phase alphα phase ageing
M. Chu I. P. Jones X. Wu
School of Metallurgy and Materials,the University of Birmingham,Edgbaston B15 3UCUK
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
800-803
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）