Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1638295 | Transactions of Nonferrous Metals Society of China | 2012 | 7 Pages |
Abstract
The flow stress features of PM Ti-47Al-2Cr-0.2Mo alloy were studied by isothermal compression in the temperature range from 1000 to 1150 °C with strain rates of 0.001-1 sâ1 on Gleeble-1500 thermo-simulation machine. The results show that the deformation temperature and strain rate have obvious effects on the flow characteristic, and the flow stress increases with increasing strain rate and decreasing temperature. The processing maps under different deformation conditions were established. The processing maps of this alloy are sensitive to strains. The processing map at the strain of 0.5 exhibits two suitable deformation domains of 1000-1050 °C at 0.001-0.05 sâ1 and 1050-1125 °C at 0.01-0.1 sâ1. The optimum parameters for hot working of the alloy are deformation temperature of 1000 °C and strain rate of 0.001 sâ1 according to the processing map and microstructure at true strain of 0.5.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Hui-zhong LI, Min ZENG, Xiao-peng LIANG, Zhou LI, Yong LIU,