Landau model of the microstructure and shape memory properties of cubic–monoclinic-II martensite

Lee, Dong‐Wook; Xu, Guanglong; Cui, Yujie

doi:10.1016/j.scriptamat.2014.06.017

Cited by 7 publications

(6 citation statements)

References 27 publications

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“…Anisotropy, the habit is a constant plane, which is consistent with the classic WLR and BM theory . In the last few decades, the phase field method has shown tremendous capabilities of predicting Martensitic phase transformation . When the martensite transformation model is solved based on the phase field method, the values of various parameters will directly affect the final calculation results.…”

Section: Introductionsupporting

confidence: 72%

Influence of Material Parameters on Martensitic Transformation and Its Sensitivity Analysis

Gao

et al. 2019

steel research int.

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Accurate acquisition of the microscopic representation of the martensite transformation process is the key to obtaining the best performance of the material, it is of great significance in the field of quenching of iron-based materials and material design. The martensite transformation process is affected by a variety of material parameters, quantitative analysis of the influence degree, and sensitivity of various parameters on martensite transformation is the key to accurately grasp the transformation mechanism of martensite. This paper combines the phase-field with the finite element method, a mathematical model for the transformation of martensite from metastable to steady state is established and the model is solved. Accurately reveal the law of energy field variation during martensite transformation and obtain the influence of energy field and interference between martensite and analyze the influence of phase field parameters on martensite. On this basis, the sensitivity and correlation degree of various parameters to the martensite transformation process are evaluated by orthogonal test. This study lays an important theoretical foundation for effectively revealing and mastering the essence of martensite transformation law. It can find effective ways to influence the martensite transformation law, obtain optimal parameters, and improve the mechanical properties of materials.

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Section: Introductionsupporting

confidence: 72%

Influence of Material Parameters on Martensitic Transformation and Its Sensitivity Analysis

Gao

et al. 2019

steel research int.

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“…Note that since the symmetry breaking of cubic-to-monoclinic II MT contains the elements of cubic-to-tetragonal, a specific 2D projection of the microstructure of the monoclinic II martensites in a fine wire sample could sustain the lamella features in tetragonal martensites [67]. The formation of a single martensite variant in equilibrium with the austenite is energetically allowed at Tm, and even at higher temperature, if the local stress is above a threshold.…”

Section: The Effect Of Quenching Temperatures On Heterogeneous Nucleamentioning

confidence: 99%

Landau modeling of dynamical nucleation of martensite at grain boundaries under local stress

Xu¹,

Wang²,

Beltrán³

et al. 2016

Computational Materials Science

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The dynamical nucleation of martensite in polycrystals is simulated by means of Lagrange-Rayleigh dynamics with Landau energetics, which is capable of obtaining the local stress as a result of the interplay of the potential of transformation and external loadings. By monitoring the spatio-temporal distribution of the strain in response to the local stress, we demonstrate that the postcursors, high angle grain boundaries and triple junctions act as favorable heterogeneous nucleation sites corresponding to different loading and cooling conditions, and predict the phase diagram of the nucleation mode of martensite.

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“…[15][16][17][18][19][20][21][22] In the last decades, the phase field method has been developed fully as an effective tool for predicting the martensitic phase transformation. [22][23][24][25][26][27][28][29][30][31][32][33] Research on the field of laser quenching has been carried out for many years. [34][35][36][37][38][39][40] However, the relevant literature for modelling and solving the Martensite transformation process during laser quenching has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Phase-field simulation and high-temperature confocal laser scanning microscope experimental study of Martensite transformation during the disk laser quenching process

Li,

Feng,

Sun

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part L:

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Laser quenching has significant advantages over conventional heat treatment. The main microstructure of C30E4 steel after quenching at a specific temperature is Martensite. Accurately obtaining the microscopic characteristics of the Martensite transformation process is the key to obtaining the best material properties, which is significant to material design. In this paper, the C30E4 steel was disk-laser-quenched, the metallographic and high-temperature confocal laser scanning microscope experiment was carried out. The microstructure of the fully phase-change hardened zone, heat-affected transition zone and matrix zone after quenching was obtained. The C30E4 martensitic transformation process in-situ was obtained. The mathematical physics model of Martensite transformation from metastable to steady state was established by phase field method. The finite-element method was used to solve the model, and the quenching Martensite transformation law was obtained. The Martensite formation process in austenite grain boundaries and microstructure defects was discussed. The experimental and the numerical simulation were compared to get consistent results, which verify the validity of the calculation method. This study lays a significant foundation for effectively revealing the Martensite formation and transformation during the disk laser quenching process, and provides a theoretical basis for quantifying the influence of Martensite transformation process on material properties.

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Landau model of the microstructure and shape memory properties of cubic–monoclinic-II martensite

Cited by 7 publications

References 27 publications

Influence of Material Parameters on Martensitic Transformation and Its Sensitivity Analysis

Influence of Material Parameters on Martensitic Transformation and Its Sensitivity Analysis

Landau modeling of dynamical nucleation of martensite at grain boundaries under local stress

Phase-field simulation and high-temperature confocal laser scanning microscope experimental study of Martensite transformation during the disk laser quenching process

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