Stress-assisted martensitic transformations in steels: A 3-D phase-field study

Yeddu, Hemantha Kumar; Borgenstam, Annika; Ågren, John

doi:10.1016/j.actamat.2013.01.039

Cited by 54 publications

(35 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[54,63,65,66]. A similar trend is observed in the phase-field simulations of stress-assisted martensitic transformation in carbon steels [39]. Moreover, for a given volume fraction of martensite, a higher equivalent plastic strain is obtained at high strain rate, which is in good agreement with Ref.…”

Section: Biaxial Compressive Strain Loadingsupporting

confidence: 86%

“…(15) [42], which incorporates the inertial response. As the material is subjected to a dynamic load, force balance is used rather than the mechanical equilibrium equation, which is sufficient under a static load [39]. That is:…”

Section: Phase-field Modelmentioning

confidence: 99%

“…The phase-field method [24][25][26] has been successfully used to study the microstructure evolution during martensitic transformations [8,[27][28][29][30][31][32][33][34][35][36][37][38][39][40]. The simulations clearly show some of the typical characteristics of the transformation, such as twinned microstructure evolution and autocatalysis [36], the effect of plasticity on the morphology [37], habit planes and rotations of variants during the transformation [37], the effect of embryo potency on the transformation [38], the stress-assisted martensitic microstructure evolution under different stress states and the TRIP effect [39].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Strain-induced martensitic transformation in stainless steels: A three-dimensional phase-field study

2013

Self Cite

View full text Add to dashboard Cite

Section: Biaxial Compressive Strain Loadingsupporting

confidence: 86%

Section: Phase-field Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strain-induced martensitic transformation in stainless steels: A three-dimensional phase-field study

2013

Self Cite

View full text Add to dashboard Cite

“…[18][19][20][21][22] The MT in steels have been simulated by simultaneously modeling the cubic → tetragonal lattice deformation and the plastic deformation in the γ and/or α ′ phases. [23][24][25][26][27][28][29][30][31][32][33] In most of these studies, the elastic energy calculation is based on the microelasticity theory; 14,34) hence, the long-range elastic interaction between the transformation strain (Bain strain), plastic strain, and external applied stress is automatically taken into account and its effect on the microstructure evolution has been successfully simulated. However, the formation of the {111} γ habit plane has not yet been simulated; although Yeddu et al 26) predicted the habit plane of an infinitesimal α ′ phase as ( 111) γ , the final habit plane was determined to be ( 2 11) γ after the growth of the α ′ phase.…”

Section: Introductionmentioning

confidence: 99%

Phase-field Simulation of Habit Plane Formation during Martensitic Transformation in Low-carbon Steels

Tsukada

Kojima²,

Koyama

et al. 2015

ISIJ International

View full text Add to dashboard Cite

The origin of the habit plane of the martensite phase (α ′) in low-carbon steels is elucidated by threedimensional phase-field simulations. The cubic → tetragonal martensitic transformation and the evolution of dislocations with Burgers vector a α ′ /2〈111〉 α ′ in the evolving α ′ phase are modeled simultaneously. By assuming a static defect in the undercooled parent phase (γ ), we simulate the heterogeneous nucleation in the martensitic transformation. The transformation progresses with the formation of the stress-accommodating cluster composed of the three tetragonal domains of the α ′ phase. With the growth of the α ′ phase, the habit plane of the martensitic cluster emerges near the (111) γ plane, whereas it is not observed in the simulation in which the slip in the α ′ phase is not considered. We observed that the formation of the (111) γ habit plane, which is characteristic of the lath martensite that contains a high dislocation density, is attributable to the slip in the α ′ phase during the martensitic transformation.

show abstract

“…[1][2][3] Computer simulations of microstructures generated from solid-state phase transformations have also achieved a certain degree of success. [4][5][6][7][8] The orientations of the predicted faceted interfaces are a key parameter that can be used to check whether a simulated morphology actually resembles what is observed in a real material. Simulation results are generally in excellent agreement with experimental results if the two phases are related by a rational OR and have a rational HP.…”

Section: Introductionmentioning

confidence: 99%

Faceted interfaces: a key feature to quantitative understanding of transformation morphology

Zhang

Dai

2016

npj Comput Mater

View full text Add to dashboard Cite

Faceted interfaces are a typical key feature of the morphology of many microstructures generated from solid-state phase transformations. Interpretation, prediction and simulation of this faceted morphology remain a challenge, especially for systems where irrational orientation relationships (ORs) between two phases and irrational interface orientations (IOs) are preferred. In terms of structural singularities, this work suggests an integrated framework, which possibly encompasses all candidates of faceted interfaces. The structural singularities are identified from a matching pattern, a dislocation structure and/or a ledge structure. The resultant singular interfaces have discrete IOs, described with low-index g's (rational orientations) and/or Δg's (either rational or irrational orientations). Various existing models are grouped according to their determined results regarding the OR and IO, and the links between the models are clarified in the integrated framework. Elimination of defect types as far as possible in a dominant singular interface often exerts a central restriction on the OR. An irrational IO is usually due to the elimination of dislocations in one direction, i.e., an O-line interface. Analytical methods using both three-dimensional and two-dimensional models for quantitative determinations of O-line interfaces are reviewed, and a detailed example showing the calculation for an irrational interface is given. The association between structural singularities and local energy minima is verified by atomistic calculations of interfacial energies in fcc/bcc alloys where it is found that the calculated equilibrium cross-sections are in a good agreement with observations from selected alloys.

show abstract

Stress-assisted martensitic transformations in steels: A 3-D phase-field study

Cited by 54 publications

References 44 publications

Strain-induced martensitic transformation in stainless steels: A three-dimensional phase-field study

Strain-induced martensitic transformation in stainless steels: A three-dimensional phase-field study

Phase-field Simulation of Habit Plane Formation during Martensitic Transformation in Low-carbon Steels

Faceted interfaces: a key feature to quantitative understanding of transformation morphology

Contact Info

Product

Resources

About