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- Title
Plastic flow and microstructural evolution in Ti-6Al-2Zr-1Mo-1V alloys during hot deformation.
- Authors
Dong, X. J.; Lu, S. Q.; Zhang, H. Z.; Li, W.; Wang, K. L.
- Abstract
The hot deformation behaviour and microstructural evolution in Ti-6Al-2Zr-1Mo-1V alloys have been studied using isothermal hot compression tests. The processing map was developed at a true strain of 0·7 in the temperature range 750-950°C and strain rate range 0·001-10 s−1. The corresponding microstructures were characterised by means of a metallurgical microscope. Globularisation of lamellae occurring to a greater extent in the range 780-880°C and 0·001-0·01 s−1 had a peak power dissipation efficiency of 58% at about 850°C and 0·001 s−1. The specimens deformed in 750-880°C and 0·01-10 s−1 showed an instability region of processing map, whereas the specimens deformed in 880-950°C and 1-10 s−1 indicated three kinds of flow instabilities, i.e. macro shear cracks, prior beta boundary cracks and flow localisation bands.
- Subjects
MICROSTRUCTURE; TITANIUM alloys; DEFORMATIONS (Mechanics); METALLURGY; STRAIN rate
- Publication
Materials Science & Technology, 2011, Vol 27, Issue 1, p453
- ISSN
0267-0836
- Publication type
Article
- DOI
10.1179/174328409X439097