It turns out that the solute solution strengthening in Cu- Ti alloys plays a crucial role, even though the fine grain size and precipitation strengthening mechanism are contributed to the strength of Cu-Ti-Cr -Fe alloys.
We identify and analyze general trends governing solid solution strengthening in binary alloys containing solutes across the Periodic table using quantum-mechanical calculations.
Strong solid solution strengthening by Cr was predicted.
Solid solution strengthening by the constitutive elements of the alloys was calculated using Labush approach.
A strengthening sequence was proposed in this alloy as follows: dislocation strengthening > solid solution strengthening > grain boundary strengthening > lattice friction strengthening > second phase strengthening.
The high strength was attributed to the dispersion strengthening, solid solution strengthening, sub-structure strengthening, and dislocation strengthening, in which sub-structure strengthening is dominate.
Contributions from the several mechanisms (boundary strengthening, solid solution strengthening, precipitate strengthening and dislocation strengthening) are discussed and estimated using simplified models.
Mechanical properties of steels can be improved by work hardening, solid solution strengthening, grain refinement, and dispersion strengthening.
The solubility of titanium and molybdenum in ferrite is low and is assumed to have negligible solid solution strengthening effect.
A general model is proposed that performs as the framework for an extensive assessment of solid solution strengthening coefficients.
