Construction of Processing Maps with High Precision for Ti-10V-2Fe-3Al Alloy
Hot deformation behavior of Ti-10V-2Fe-3Al was evaluated with processing maps. Ti-10V-2Fe-3Al is a metastable β-titanium alloy for aerospace application. In developing the maps, we applied the new friction and thermal correction method found by Li et al. and Mataya et al. to make authentic stress-strain curves. The cases for the as hot-forged Ti10V-2Fe-3Al alloy and the Ti-10V-2Fe-3Al alloy annealed at βsingle phase temperature (950℃) were evaluated in this work. Cylindrical specimens were machined and then compression tests were carried out in the temperature range of 700℃-1000℃ and in the strain rate range 0.001-10s-1 using a computer-aided hot forging simulator (Thermec-Master Z). Micro-structure of ashot forged specimen exhibited a duplex α+β structure. Microstructures of the sample after compression below the (Hransus showed equiaxed α+β structure. On the other hand,microstructures after compression at and above the (Hransus revealed the almost fully mar-tensite structure especially at higher strain more than 1s-1. There was a difference in the peaks in power dissipation maps and the regions in instability maps before and after compensation. Comparing the compressed microstuructures and the processing maps, it was found that the deformation is dominated by dynamic recovery or continuous dynamic recrystallization.
Ti-10V-2Fe-3Al beta titanium alloys processing map hot de formation titanium for aerospace application
Toshiyuki AKANUMA Hiroaki MATSUMOTO Akihiko CHIBA Ikuhiro INAGAKI Yoshihisa SHIRAI Takashi MAEDA
Graduate Student,Tohoku University Institute for Materials Research,Tohoku University Sumitomo Metal Industries,LTD. Railway Automotive and Machinery Parts Company Sumitomo Metal Industries,LTD. Corporate Research and Development Laboratories
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
269-273
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）