Dissolution Kinetics of α phase in TA6V Titanium Alloy
The complexity and diversity of microstrueture involved in titanium alloys make it rather difficult to quantitatively describe microstructural evolution. In the present study we focus on microstrueture evolutions during heating and isothermal holding considering the effect of the initial microstrueture on the dissolution kinetics of α phase. Quantitative microstrueture characterizations have been realized. At first,in situ high energy X-ray synchrotron and electrical resistivity was used to follow the dissolution kinetics of α phase. Then, an algorithm capable of quantifying various microstructural data was developed. The microstructural features include the amount of nodular and lamellar α phase, the mean equivalent diameter and the aspect ratio of nodular α phase. This algorithm was applied to TA6V4 samples submitted to different isothermal temperature. The initial microstrueture of the samples was either a duplex microstrueture (lamellar and nodular α phase) or a nodular microstrueture. The dissolution kinetics of α phase was compared with the equilibrium calculations predicted by ThermoCalc. It appears clearly that a large amount of α phase is dissolved on heating in spite of a rapid heating rate.
TA6V dissolution kinetics synchrotron diffraction image analysis modeling
Moukrane Dehmas Richard Katemi Benott Appolaire Elisabeth Aeby-Gautier Benoit Denand Sylvain Audion
Institut Jean Lamour,SI2M,Ecole des Mines,Pare de Saurupt,54042 Nancy France ONERA,LEM,29,avenue de la Division Leclerc,92322 Chatillon France AIRBUS,316,Route de Bayonne,BP E5001 31060 Toulouse Cedex 9
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
719-723
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）