First-principles study of phase stability and temperature-dependent mechanical properties of (Cr, M)23C6 (M = Fe, Mo) phases

Temperature Dependence of Mechanical Properties and Plastic Flow Behavior of Cast Multicomponent Alloys Fe20Cr20Mn20Ni20Co20-xCx (x = 0, 1, 3, 5)

“…This means that the temperature dependence of the yield stress of the composite material in the low-temperature deformation region cannot be described by the temperature dependence of σ 0.2 of the austenitic matrix. Elastic moduli of carbide M 23 C 6 are less dependent on the temperature in comparison with the austenitic alloy FeCrMnNiCo [26,27], i.e. as the test temperature decreases, shear moduli for particles and the matrix have less different values.…”

“…The above-described deformation behavior of the heterophase material is due to the difference in elastic moduli of austenite and carbide (G = 80-85 GPa for FeCrMnNiCo [25] and G ≈ 140 GPa for M 23 C 6 [26] in the temperature range 77-300 K), so that the FeCrMnNiCo-5C alloy under loading behaves like a dispersion-reinforced metal-matrix composite with the compliant austenitic matrix and rigid carbide inclusions [27,28]. In such materials, rigid inclusions act as stress concentrators, which, even at low macroscopic loads, can cause significant distortion of stress fields around inclusions and plastic deformation of the compliant plastic matrix already at the initial stages of deformation (well below the macroscopic yield stress) [27,28].…”

Determination of residual stress gradient in a Ti-stabilized austenitic stainless steel cladding candidate after carburization in liquid sodium at 500 °C and 600 °C

“…12 ) were calculated without taking into consideration the evolution of the XEC as function of the composition of M 23 C 6 . Gong et al [57] have reported a chemical composition dependent evolution of M 23 C 6 elasticity constants. Unfortunately, the data given in their study did not cover all the composition range and could not be used in our study.…”

Determination of the site preference on the structure, magnetism and mechanical anisotropy properties of Mo-containing alloy carbide M6C (M = Fe, Mo)

“…In this work, the formation energy is calculated for comparison with previous research [21], ensuring the accuracy of our energy calculation. Recently, the reaction energy (ΔE r ) was used to predict the stability of a compound [34]. The ΔE r is described in equation ( 2):…”