Characterization of Ti-6Al-2Sn-4Zr-6Mo alloy flow behaviour using Malas's stability criterion

5th International Conference Recent Trends in Structural Materials

Lypchanskyi, O.^1 ; Zygula, K.^1 ; leboda, T.^1 ; Wojtaszek, M.^1 ; Lukaszek-Solek, A.^1

AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Av. Mickiewicza 30, Cracow

PL

30-059, Poland^1

关键词: Flow behaviours;    Flow instabilities;    Hot deformation behaviors;    Mechanical behavior;    Microstructure analysis;    Temperature range;    Thermomechanical simulator;    Ti-6Al-2Sn-4Zr-6Mo alloy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/461/1/012048/pdf
DOI  :  10.1088/1757-899X/461/1/012048

来源: IOP

【 摘 要 】

In the presented study the hot deformation behavior of Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) alloy was investigated by isothermal hot compression tests conducted on the Gleeble 3800 thermomechanical simulator in the temperature range of 800-1100 °C and in strain rate range of 0.01 -100 s-1to true strain of 1. For determining the unstable flow regions of the investigated alloy during hot deformation, the processing maps based on the Malass criterion of plastic flow stability were used. For characterization of the material flow during forming operations, the microstructure analysis of the processed alloy was performed and associated with the processing maps. Basing of this analysis, the results of predicting the flow instability were confirmed, what made possible to understand the mechanical behavior of Ti-6246 alloy in a wide range of strain rates and temperatures.