Journal ArticleDOI
A Statistical Theory of Solid Solution Hardening
TLDR
The critical shear stress τc to move a dislocation through a random array of obstacles in the glide plane is calculated using a statistical theory and the theory provides a definite prescription how to combine the concentrations and interaction forces of obstacles of different kinds.Abstract:
The critical shear stress τc to move a dislocation through a random array of obstacles in the glide plane is calculated using a statistical theory. The result is an expression for τc in terms of the obstacle concentration, the line tension of the dislocation, and of the interaction force between the dislocation and a single obstacle. Fleischer's solution of the same problem is not reproduced by the statistical theory. Quantitatively the two results are not very different, but our new result is supported by some recent experimental evidence. Furthermore the theory provides a definite prescription how to combine the concentrations and interaction forces of obstacles of different kinds in the expression for τc.read more
Citations
More filters
Journal ArticleDOI
Temperature dependence of the mechanical properties of equiatomic solid solution alloys with face-centered cubic crystal structures
Journal ArticleDOI
Microstructure and Room Temperature Properties of a High-Entropy TaNbHfZrTi Alloy (Postprint)
TL;DR: In this article, a refractory alloy, Ta20Nb20Hf20Zr20Ti20, was produced by vacuum arc-melting and the as-solidified alloy had a dendritic structure, which was not affected by hot isostatic pressing.
Journal ArticleDOI
High entropy alloys: A focused review of mechanical properties and deformation mechanisms
TL;DR: In this article, the authors provide a detailed review of the deformation mechanisms of HEAs with the complex concentrated alloys (CCAs) with the FCC and BCC structures, highlighting both successes and limitations.
Journal ArticleDOI
Tuning element distribution, structure and properties by composition in high-entropy alloys.
Qingqing Ding,Yin Zhang,Xiao Chen,Xiaoqian Fu,Dengke Chen,Sijing Chen,Lin Gu,Fei Wei,Hongbin Bei,Yanfei Gao,Yanfei Gao,Minru Wen,Jixue Li,Ze Zhang,Ting Zhu,Robert O. Ritchie,Robert O. Ritchie,Qian Yu +17 more
TL;DR: Atomic-resolution chemical mapping reveals deformation mechanisms in the CrFeCoNiPd alloy that are promoted by pronounced fluctuations in composition and an increase in stacking-fault energy, leading to higher yield strength without compromising strain hardening and tensile ductility.
References
More filters
Journal ArticleDOI
Solid solution hardening of gold and other f.c.c. single crystals
P. Jax,P Kratochvíl,P. Haasen +2 more
TL;DR: In this article, the solid solution hardening τp of Au-In, Cd, Ga, Zn single crystals is measured in the plateau region and a c 2 3 - dependence fits better than τ p ~ c 1 2.
Journal ArticleDOI
Solid solution hardening of silver single crystals by cadmium
T. Kan,Peter Haasen +1 more