Author:
Jiao S.,Bird N.,Hirsch P. B.,Taylor G.
Abstract
ABSTRACTA study of the occurrence of ordinary slip in single crystals of Ti 54.5 at% Al with various orientations at different temperatures shows that the critical resolved shear stress is approximately the same for ¼⟨110] slip on {111} and {110} planes near the peak of the yield stress anomaly. However the shapes of the glide loops are quite different, suggesting that the order of relative mobilities of screw and edge dislocations is reversed in the two cases. The reason for this and its possible effect on the mechanism responsible for the yield stress anomaly of ½⟨110] {111} slip are discussed. Experiments on the thermal reversibility of the yield stress when either ordinary- or super- dislocation slip systems are operating at both temperatures have shown that the yield stress is reversible for the latter but not reversible in the former case.
Publisher
Springer Science and Business Media LLC
Reference9 articles.
1. 8. Stucke M.A. , Dimiduk D.M. and Hazzledine P.M. in High Temperature Ordered Intermetallic Alloys, VI, edited by Baker I. , Darolia R. , Whittenberger J.D. and Yoo M.H. (Mater. Res. Soc. Proc. 288, Pittsburgh, PA, 1993) pp. 471–476.
2. Modelling the flow stress anomaly in γ-TiAl II. The local pinning-unzipping model: Statistical analysis and consequences
3. 2. Bird N. , Taylor G. and Sun Y.Q. in High Temperature Ordered Intermetallic Alloys, VI, edited by Horton J. , Baker I. , Hanada S. , Noebe R.D. and Schwartz D.S. (Mater. Res. Soc. Proc. 364, Pittsburgh, PA, 1995) pp. 635–640.
4. Positive temperature dependence of the yield stress in TiAl L10 type superlattice intermetallic compound single crystals at 293–1273 K
5. The geometry and nature of pinning points of ½ ⟨110] unit dislocations in binary TiAl alloys
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献