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Crystallographic Structure of Ti-6Al-4V, Ti-HP and Ti-CP Under High Pressure

Journal Article · · Journal of Physics: Conference Series
The phase stability of a commercial purity (Ti-CP), high purity (Ti-HP) and Ti-6Al-4V alloy were investigated in a diamond anvil cell up to 32 GPa and 298 K using a polychromatic X-ray beam. The Ti-CP and Ti-HP shown the same HCP (c/a {approx} 0.632) to Hexagonal (c/a {approx} 1.63) non reversible martensitic transition at about 9 GPa. The as received Ti-6Al-4V shows a very low relative volume fraction {beta}-Ti/{alpha}-Ti. No phase changes were observed in the Ti-6Al-4V alloy in the pressure range of this study. The {alpha} phase of the Ti-6Al-4V shows monotonic volume cell pressure dependence. This volume change is reversible and non-hysteretic. The cell of the a phase recovered its original volume when the pressure was released.
Research Organization:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Organization:
DOE - OFFICE OF SCIENCE
DOE Contract Number:
AC02-98CH10886
OSTI ID:
1020223
Report Number(s):
BNL--96073-2011-JA
Journal Information:
Journal of Physics: Conference Series, Journal Name: Journal of Physics: Conference Series Journal Issue: 1 Vol. 215
Country of Publication:
United States
Language:
English

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