Martensitic microstructure evolution in austenitic steel: A thermomechanical polycrystalline phase field study

Paliwal, Bhasker; Moser, Robert D.; Barrett, Christopher D.; Whittington, W.R.; Rhee, Hongjoo; Paudel, YubRaj; Mujahid, Shiraz; Kadiri, Haitham El

doi:10.1557/s43578-021-00209-2

Cited by 3 publications

(7 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, crystal plasticity models have been coupled with phase-field (PF) methods to study the twinning mechanisms [141][142][143][144][145], where twinning is modeled as a phase transformation, and plastic deformation is computed using crystal plasticity methods. Phase-field models, first started by Khachaturian [146], have been successful to predict austenite-martensite transformation in steels [147] and tetragonal-monoclinic transformation in zirconia [148]. In hcp Mg, Pi et al [149] used the phase-field model to study the tensile twins using twin interfacial energy as a driving force.…”

Section: Coupled Crystal Plasticity and Phase-field Model (Cp-pfm)mentioning

confidence: 99%

A Review on Capturing Twin Nucleation in Crystal Plasticity for Hexagonal Metals

Paudel

Giri

Priddy

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

Owing to its ability to incorporate Schmid’s law at each integration point, crystal plasticity has proven a powerful tool to simulate and predict the slip behavior at the grain level and the ensuing heterogeneous stress/strain localization and texture evolution at the macroscopic level. Unfortunately, notwithstanding substantial efforts during the last three decades, this remarkable capability has not been replicated for materials where twinning becomes a noticeable deformation mechanism, namely in the case of low-stacking fault energy cubic, orthorhombic, and hexagonal close-packed structures. The culprit lies in the widely adopted unphysical pseudo-slip approach for capturing twin formation. While the slip is diffuse, twinning is a localized event that occurs as a drastic burst of a confined number of partial twinning dislocations establishing an interface that pursues growth through a thread of perfect twinning dislocations in the sense of bicrystallography. Moreover, at earlier stages, twin nucleation may require atomic diffusion (Shuffling) and faceting, generally demanding higher stress levels not necessarily on the twin shear plane, while triaxiality at adequate sites might be needed or preferred such as lower grain boundary misorientations or other twin boundaries. Identifying a mathematical framework in the constitutive equations for capturing these twin formation sensitivities has been a daunting challenge for crystal plasticity modelers, which has stalled ameliorating the design of key hexagonal materials for futuristic climate change-related industries. This paper reviews existing approaches to incorporating twinning in crystal plasticity models, discusses their capabilities, addresses their limitations, and suggests prospective views to fill gaps. The incorporation of a new physics-based twin nucleation criterion in crystal plasticity models holds groundbreaking potential for substantial progress in the field of computational material science.

show abstract

Section: Coupled Crystal Plasticity and Phase-field Model (Cp-pfm)mentioning

confidence: 99%

A Review on Capturing Twin Nucleation in Crystal Plasticity for Hexagonal Metals

Paudel

Giri

Priddy

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

“…The small strains-based multiphase phase-field approaches have been developed to study MTs in polycrystalline materials in [97][98][99][100][101][102][103][104][105][106][107][108][109][110][111][112][113][114][115]. The only PF model used for polycrystalline samples by Malik et al [116,117] considers a geometric nonlinear total strain, which was additively decomposed into inelastic and elastic parts.…”

Section: Introductionmentioning

confidence: 99%

“…8.2 of [118] and the references therein). Both concentration based [97][98][99][100][101][102][103][104][105][106][108][109][110][111][112][113][114][115] and transformation strains [98,102,103,111] based order parameters have been used for describing the A and the N variants M 1 M 2 , . .…”

Section: Introductionmentioning

confidence: 99%

“…Such a single constraint cannot assure that each of the MTs can be systematically described by a single order parameter only, which is necessary for identifying the relations between the system parameters and the measurable material parameters; see [87]. The other papers [99][100][101][102][103][106][107][108][109][110][111][112][113][114][115][116][117] also did not consider all necessary constraints which allow controlling all the transformation paths and calibration of all the system parameters; see [87] for a detailed discussion. Various strategies were adopted to initiate the MTs in those papers as follows.…”

Section: Introductionmentioning

confidence: 99%

“…It is to be mentioned that none of the existing papers on MTs in polycrystalline solids [15,81,[97][98][99][100][101][102][103][104][105][106][108][109][110][111][112][113][114][115][116][117] studied the role of the GB width on the temperature of nucleation of the phases and the subsequent microstructure evolution. The change in GB energy due to MTs, an important material parameter discussed above, is also yet to be incorporated to develop a robust model.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Grain boundary-induced martensitic transformations: A phase-field study of nucleation, size-effect, triple junction-effect, microstructures, and compatibility at the nanoscale

Basak¹

2022

Preprint

View full text Add to dashboard Cite

An original thermodynamically consistent large strains-based multiphase phase-field (PF) approach of Ginzburg-Landau type is developed for studying the grain boundary (GB)-induced martensitic transformations (MTs) in polycrystalline materials at the nanoscale considering the structural stresses within the interfaces. In this general PF approach, N independent order parameters are used for describing the austenite (A)↔martensite (M) transformations and N (> 1) martensitic variants, and another M independent order parameters are considered for describing M (> 1) grains in the polycrystalline samples.The change in the GB energy due to its structural rearrangement during MTs is considered using variable energy for the GB(s) as a function of the order parameter related to the A ↔ M transformation. A rich plot for the temperatures of transformations between the A, premartensite, and M in a bicrystal with a symmetric planar tilt GB are plotted for the varying austenitic GB width. The strong effects of the parameters, including the austenitic GB width, change in GB energy due to MTs, GB misorientation, applied strains, and sample size on heterogeneous nucleation of the phases and the subsequent complex martensitic microstructures evolution are explored in various bicrystals with symmetric or asymmetric planar or circular tilt GBs during the forward and reverse transformations. The triple junction (TJ) energy and the energy and width of the adjacent GBs are also shown to strongly influence the nucleation and microstructures using the tricrystals having three symmetric planar tilt GBs meeting at 120 • dihedral angles. The compatibility of the microstructures across the GBs is studied. The elastic and structural stresses across the GBs and TJ regions are plotted, which is essential for understanding the role of GBs and TJs in materials failure. The plausible reasons for the nonintuitive behaviour of the GBs on martensite nucleation observed in experiments and atomistic simulations are explained.

show abstract

Grain boundary- and triple junction-induced martensitic transformations: A phase-field study of effects of grain boundary width and energy

Basak

2023

International Journal of Solids and Structures

View full text Add to dashboard Cite

Martensitic microstructure evolution in austenitic steel: A thermomechanical polycrystalline phase field study

Cited by 3 publications

References 68 publications

A Review on Capturing Twin Nucleation in Crystal Plasticity for Hexagonal Metals

A Review on Capturing Twin Nucleation in Crystal Plasticity for Hexagonal Metals

Grain boundary-induced martensitic transformations: A phase-field study of nucleation, size-effect, triple junction-effect, microstructures, and compatibility at the nanoscale

Grain boundary- and triple junction-induced martensitic transformations: A phase-field study of effects of grain boundary width and energy

Contact Info

Product

Resources

About