Hot Deformation of TZM Alloy ,2013-II
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- Category: Molybdenum knowledge
- Published on 04 July 2013
- Hits: 399
The aim of the present study was to evaluate the subgrain and texture formation and also to estimate the dislocation arrangement within subgrains during hot deformation. Hence, TZM alloys were rolled to different degrees of deformation at a temperature above 0.5 Tm.
The microstructure of the initial material was fully recrystallized. Texture formation, misorientation distributions and subgrain sizes were analyzed by electron backscattering diffraction (EBSD). Mechanical properties were characterized by tensile tests at room temperature and up to 1200 deg C.
It was revealed, that with increasing degree of deformation a distinct substructure forms and therefore yield strength rises. Consequently, the misorientation between adjacent subgrains increases, their size decreases and a <110> fibre texture develops.
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