Microstructure Evolution of Near Gamma TiAl Intermetallic under Tensile Impact Loadings at High Temperatures
| Periodical | Advanced Materials Research (Volumes 146 - 147) |
|---|---|
| Main Theme | Advances in Superalloys |
| Edited by | Sihai Jiao, Zhengyi Jiang and Jinglong Bu |
| Pages | 1553-1556 |
| DOI | 10.4028/www.scientific.net/AMR.146-147.1553 |
| Citation | Yu Wang et al., 2010, Advanced Materials Research, 146-147, 1553 |
| Online since | October, 2010 |
| Authors | Yu Wang, Xiang Zan, Yue Hui He, Yang Wang |
| Keywords | High Strain Rate, High Temperature, Micro-Structure Evolution, TiAl Intermetallics |
| Price | US$ 28,- |
The effect of temperature and strain rate on the mechanical behavior and microstructure evolution of Near Gamma Ti-46.5Al-2Nb-2Cr (NG TiAl) was investigated at temperatures ranging from room temperatures to 840 under strain rates of 0.001, 320, 800 and 1350s-1. The TEM analysis indicated that deformation twinning and stacking fault are the main deformation modes under dynamic loadings and dislocation slip is another important deformation mode under quasi-static loadings. The density of deformation twinning and/or stacking fault increases with the increased temperature and strain rate.