Elastic properties of fcc Fe–Mn–X (X=Al, Si) alloys studied by theory and experiment

Gebhardt, T.; Mušić, Denis; Kossmann, Daniel; Ekholm, Marcus; Abrikosov, Igor A.; Vitos, Levente; Schneider, Jochen M.

doi:10.1016/j.actamat.2011.01.054

Cited by 60 publications

(29 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…CuZr/Cu nanolaminates were deposited on Si (100) wafers by direct current magnetron sputtering at room temperature in a setup described previously [32]. Cu (99.99 at%) and Zr (99.99 at%) targets were utilized to deposit alternating CuZr and Cu layers.…”

Section: Materials Synthesismentioning

confidence: 99%

Deformation induced alloying in crystalline – metallic glass nano-composites

Guo

Yao

Jägle

et al. 2015

Materials Science and Engineering: A

Self Cite

View full text Add to dashboard Cite

Section: Materials Synthesismentioning

confidence: 99%

Deformation induced alloying in crystalline – metallic glass nano-composites

Guo

Yao

Jägle

et al. 2015

Materials Science and Engineering: A

Self Cite

View full text Add to dashboard Cite

“…III D 1), we will now show that the two approximation sets can be used in a single scheme that accurately describes FeMn alloys in the complete composition interval. This scheme has previously been successfully used for calculations of elastic constants and thermodynamic properties in paramagnetic and AFM Fe-Mn alloys, [71][72][73][74][75] and will now be given its formal justification. In Fig.…”

Section: Proposed Computational Scheme For Accurate Theoretical Simulmentioning

confidence: 99%

Structural and magnetic ground-state properties ofγ-FeMn alloys fromab initiocalculations

Ekholm

Abrikosov

2011

Phys. Rev. B

View full text Add to dashboard Cite

The magnetic properties of fcc-FeMn alloys, especially at the Fe 0.5 Mn 0.5 composition, have been the subject of intense experimental and theoretical investigations for several decades. We carry out an ab initio theoretical study of this system, including simultaneous optimization of structural and magnetic properties, and find that the ground state is the locally relaxed noncollinear 3Q antiferromagnetic structure. We also show that the two most frequently used parameterizations of the generalized gradient approximation not only fail to reproduce the equilibrium lattice constant of FeMn alloys, and consequently the magnetic properties, but also internally yield qualitatively different results. For practical studies of these alloys, which currently attract great attention, we propose a set of approximations, which is internally consistent, and brings the equilibrium lattice constant and magnetic properties in good agreement with the experiment in the whole range of alloy compositions.

show abstract

“…9 = 2 C44/(C11 -C12) = 5.2) were estimated from the ab-initio calculations of the elastic properties of FeMn-Al/Si alloys [33].…”

Section: Elasto-plastic Self-consistent Modellingmentioning

confidence: 99%

On the evolution and modelling of lattice strains during the cyclic loading of TWIP steel

et al. 2013

View full text Add to dashboard Cite

The evolution of lattice strains in fully annealed Fe-24Mn-3Al-2Si-1Ni-0.06C twinning-induced plasticity (TWIP) steel is investigated via in situ neutron diffraction during cyclic (tension-compression) loading between strain limits of ±1%. The pronounced Bauschinger effect observed upon load reversal is accounted for by a combination of the intergranular residual stresses and the intragranular sources of back stress, such as dislocation pile-ups at the intersection of stacking faults. The recently modified elasto-plastic self-consistent (EPSC) model which empirically accounts for both intergranular and intragranular back stresses has been successfully used to simulate the macroscopic stress-strain response and the evolution of the lattice strains. The EPSC model captures the experimentally observed tension-compression asymmetry as it accounts for the directionality of twinning as well as Schmid factor considerations. For the strain limits used in this study, the EPSC model also predicts that the lower flow stress on reverse shear loading reported in earlier Bauschinger-type experiments on TWIP steel is a geometrical or loading path effect. AbstractThe evolution of lattice strains in fully annealed Fe-24Mn-3Al-2Si-1Ni-0.06C TWinning Induced Plasticity (TWIP) steel is investigated via in-situ neutron diffraction during cyclic (tensioncompression) loading between strain limits of ±1%. The pronounced Bauschinger effect observed upon load reversal is accounted for by a combination of the intergranular residual stresses and the intragranular sources of back stress such as dislocation pile-ups at the intersection of stacking faults.The recently modified Elasto-Plastic Self-Consistent (EPSC) model which empirically accounts for both intergranular and intragranular back stresses has been successfully used to simulate the macroscopic stress-strain response and the evolution of the lattice strains. The EPSC model captures the experimentally observed tension-compression asymmetry as it accounts for the directionality of twinning as well as Schmid factor considerations. For the strain limits used in this study, the EPSC model also predicts that the lower flow stress on reverse shear loading reported in earlier Bauschinger-type experiments on TWIP steel is a geometrical or loading path effect.

show abstract

Elastic properties of fcc Fe–Mn–X (X=Al, Si) alloys studied by theory and experiment

Cited by 60 publications

References 39 publications

Deformation induced alloying in crystalline – metallic glass nano-composites

Deformation induced alloying in crystalline – metallic glass nano-composites

Structural and magnetic ground-state properties ofγ-FeMn alloys fromab initiocalculations

On the evolution and modelling of lattice strains during the cyclic loading of TWIP steel

Contact Info

Product

Resources

About