Temperature dependence of stacking fault energy in close-packed metals and alloys

Deformation Twinning Behavior of Twinning-induced Plasticity Steels with Different Carbon Concentrations – Part 2: Proposal of Dynamic-strain-aging-assisted Deformation Twinning

“…The 200 K temperature increase in high Mn steels is generally reported to increase the stacking fault energy by approximately 10 mJ/m 2 , 4,5,29,30) indicating that the calculated stacking fault energy shows good agreement with that of conventional reports. …”

Co-based alloys design based on first-principles calculations: Influence of transition metal and rare-earth alloying element on stacking fault energy

“…All alloying elements that used in this calculation decreased the ratio of stable and unstable SFE of pure Co. Then, it has an increasing impact on the emission of partial dislocations. TEM studies of pure Co and some Cobased alloys 1,8,9,15 have observed a significant amount of extended partial dislocations, confirmed the calculations in the present study and also demonstrate the role of first-principles calculations for making predictions of the structural modeling. Ranking of the binary Co-X alloys can be ordered in the sequence as shown in Fig.…”

“…Alloying with the transition and rare-earth metals are widely used in Mg-alloys that can significantly improve the mechanical properties, especially the addition of rare-earth metals 7 . Certain alloying elements could significantly change the SFE from the experiments or theoretical simulation, for example, Co-Fe, Co-Ni and Co-Ni-Cr based alloy 8,9 , but it is still insufficient for Co-based alloys. A theoretical SFE calculation, such as first-principles and thermodynamic method, is an effective method to discover the effect of various elements on the SFE and the mutual correlations between the elements 10 .…”

Considerations in the Design of Formable Austenitic Stainless Steels Based on Deformation-Induced Processes

“…The inaccuracy of the existing relationships is reflected in the inconsistent coefficients proposed for alloying elements [2,6]. Although SFE appears, based on the existing empirical relationships, to have a complex dependence on the chemical composition, it is unanimously known to increase at higher temperatures [7]. The associated changes in the glide mode have important consequences for the deformed microstructures obtained at different temperatures; the wide separation of a/6 <112> Shockley partial dislocations at low temperatures, where the SFE is low, promotes the planar glide of dislocations, for instance by restricting the cross-slip of screw dislocations.…”