A comparative study on microstructures and tensile behaviours of a novel polycrystalline and single-crystal Co–9Al–9W–2Ta-0.02B-0.02Ce alloy at room and high temperatures

2021 ◽  
Vol 137 ◽  
pp. 107284
Author(s):  
B.S. Zhang ◽  
Y.X. Yu ◽  
Z.L. Tao ◽  
J.B. Sha
1988 ◽  
Vol 33 (2) ◽  
pp. 547-551 ◽  
Author(s):  
Yu. A. Gaponov ◽  
B. I. Kidyarov ◽  
N. A. Kirdyashkina ◽  
N. Z. Lyakhov ◽  
V. B. Okhotnikov

2018 ◽  
Vol 123 (16) ◽  
pp. 161507 ◽  
Author(s):  
B. Ghosh ◽  
Sekhar C. Ray ◽  
Mbule Pontsho ◽  
Sweety Sarma ◽  
Dilip K. Mishra ◽  
...  

1998 ◽  
Vol 552 ◽  
Author(s):  
Q. Feng ◽  
S. H.

ABSTRACTThe temperature as well as orientation dependence in anomalous hardening occurs in single crystal Ti-56AI between 673K and 1073K under single slip of ordinary dislocations. The ordinary dislocations (1/2<110]) are gliding not only on (111) plane but also on (110) plane in the temperature range where the anomalous hardening occurs in single crystal Ti-56A1. The TEM study shows that the (110) cross-slip of ordinary dislocations is a double cross-slip in nature in which first, the dislocations cross-slip from the primary (111) slip plane to (110) plane followed by cross-slipping again onto another primary slip plane. This double cross-slip leaves a pair of edge segments 'superjogs' in (110) planes. It appears that these superjogs are immobile in the forward direction and act as pinning points. Furthermore, these pinning points would act as a Frank-Read source for the double cross-slipped dislocations, which generate dislocation loops as well as dislocation dipoles. The pinning structure, multiplane dislocation loops, and dipoles of double cross-slip origin all contribute to anomalous hardening at high temperatures in this material.


2018 ◽  
Vol 57 (10) ◽  
pp. 102401 ◽  
Author(s):  
Naoki Kawano ◽  
Daisuke Nakauchi ◽  
Kentaro Fukuda ◽  
Go Okada ◽  
Noriaki Kawaguchi ◽  
...  

2020 ◽  
Vol 12 (20) ◽  
pp. 23155-23164 ◽  
Author(s):  
Zilong Zhang ◽  
Haihua Wu ◽  
Liwen Sang ◽  
Yukiko Takahashi ◽  
Jian Huang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document