Experimental Investigation of Coarsening Behavior of TA15 Titanium Alloy in Beta-Phase Field
The coarsening characteristics of TA15 titanium alloy with an equiaxed microstructure were investigated via experimental study. The experiments were performed at temperatures of 1273,1293,1313,1333 and 1353 K for holding times 5,10,20 and 30 minutes at each temperature,respectively. To understand and control the coarsening behavior, the effects of temperature and holding timed ) on the growth kinetics and topolo-gical features were experimentally investigated We find that temperature does have an important effect on grain coarsening in beta- phase field. At the experimental temperatures, we neglect the effect of initial grain size R0 on coarsening evolution. The relationship between average grain size(R) and t approximately follows the classical parabolic growth law,moreover,the growth exponent (m) does not vary at specific temperatures ; the areas of grains with sides less and more than six linearly decrease and increase with t, respectively; the distribution of grain size and edges is initial grain size-invariant and time-invariant under these temperatures.
TA15 titanium alloy grain coarsening cellular automata growth kinetics topology
Wu Chuan Yang He Li Hong Wei Sun Zhi Chao
State Key Laboratory of Solidification Processing,School of Materials Science and Engineering,Northwestern Polytechnical University,Xian 710072,China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
685-688
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）