PrecHiMn-4—A thermodynamic database for high-Mn steels

Hallstedt, Bengt; Khvan, A.; Lindahl, Bonnie; Selleby, Malin; Liu, Shuhong

doi:10.1016/j.calphad.2016.11.006

Cited by 39 publications

(21 citation statements)

References 60 publications

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“…In addition, when using a four-sublattice (4SL) model to describe bcc, the importance of ternary end-member parameters was addressed and a method to evaluate these end-members was presented. [23] As reported by Hallstedt et al, [24] despite the advantage of using 4SL model to describe the bcc-based phases, the energy difference between B2 and D0 3 is very small in the ternary system, therefore, a two-sublattice model should be sufficient for most practical purposes. Recently, Balanetskyy et al [25] and Priputen et al [26] experimentally investigated the Fe-Mn-Al system with respect to the phase equilibria at the Al-rich region and the isothermal section at 1273 K, respectively.…”

Section: Fe-mn-al Systemmentioning

confidence: 95%

“…As has been reviewed above, thermodynamic descriptions of the ternary systems Fe-Mn-Al, Al-C-Mn and Fe-Al-C were improved in a series of work by Zheng et al [27,28,33] By taking the thermodynamic description of Fe-Mn-C from Djurovic et al, [39] a tailor-made thermodynamic database for the LIGHTOUGH project was constructed in the present work. Hallstedt et al, [24] Chin et al [29] and Kim and Kang [30] previously reported thermodynamic descriptions of the Fe-Mn-Al-C system. Hallstedt et al [24] pointed out that a simplified model for kappa adopted in the works [24,29,30] should be replaced by a model capable of describing order/disorder transformations.…”

Section: Fe-mn-al-c Systemmentioning

confidence: 99%

“…Hallstedt et al, [24] Chin et al [29] and Kim and Kang [30] previously reported thermodynamic descriptions of the Fe-Mn-Al-C system. Hallstedt et al [24] pointed out that a simplified model for kappa adopted in the works [24,29,30] should be replaced by a model capable of describing order/disorder transformations. This improvement has been made in this new thermodynamic database.…”

Section: Fe-mn-al-c Systemmentioning

confidence: 99%

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Prediction of Martensite Start Temperature for Lightweight Fe-Mn-Al-C Steels

Zhang

Zheng

Veys

et al. 2018

J. Phase Equilib. Diffus.

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A tailor-made thermodynamic database of the Fe-Mn-Al-C system was developed using the CALPHAD approach. The database enables predicting phase equilibria and thereby assessing the resulting microstructures of Fe-Mn-Al-C alloys. Available information on the martensite start (M s) temperature was reviewed. By employing the M s property model in the Thermo-Calc software together with the new thermodynamic database and experimental M s temperatures, a set of model parameters for the Fe-Mn-Al-C system in the M s model was optimised. Employing the newly evaluated parameters, the calculated M s temperatures of the alloys in the Fe-Mn-Al-C system were compared with the available measured M s temperatures. Predictions of M s temperatures were performed for the alloys, Fe-10, 15 and 20 wt.% Mn-xAl-yC. The predictability of the M s model can be further validated when new experimental M s temperatures of the Fe-Mn-Al-C system are available. Keywords CALPHAD Á Fe-Mn-Al-C Á lightweight steels Á martensite start temperature This invited article is part of a special issue of the Journal of Phase Equilibria and Diffusion in honor of Prof. Zhanpeng Jin's 80th birthday. The special issue was organized by Prof. Ji-Cheng (JC) Zhao,

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Section: Fe-mn-al Systemmentioning

confidence: 95%

Section: Fe-mn-al-c Systemmentioning

confidence: 99%

Section: Fe-mn-al-c Systemmentioning

confidence: 99%

See 1 more Smart Citation

Prediction of Martensite Start Temperature for Lightweight Fe-Mn-Al-C Steels

Zhang

Zheng

Veys

et al. 2018

J. Phase Equilib. Diffus.

Self Cite

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“…Further, in the selected alloy family, the activation of twinninginduced plasticity, [36][37][38] which is highly dependent on the microstructural heterogeneities, in particular crystallographic orientation distribution, 35 was used to promote a high strain hardening (rate) and hence energy absorption capacity (see ''Mechanical Properties'' and ''Performance'' sections). The Pre-cHiMn-04 database 39 was used for (thermodynamics-based phase stability) CALPHAD calculations within the Fe-Mn-Al-C chemistry subspace by Thermo-Calc software. Moreover, thermodynamicsbased stacking fault energy (SFE) calculations were performed for the selected alloy family.…”

Section: Alloy Selectionmentioning

confidence: 99%

Optimal Design for Metal Additive Manufacturing: An Integrated Computational Materials Engineering (ICME) Approach

Motaman

Kies

Köhnen

et al. 2020

JOM

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We present our latest results on linking the process-structure-propertiesperformance (PSPP) chain for metal additive manufacturing (AM), using a multi-scale and multi-physics integrated computational materials engineering (ICME) approach. The abundance of design parameters and the complex relationship between those and the performance of AM parts have so far impeded the widespread adoption of metal AM technologies for structurally critical load-bearing components. To unfold the full potential of metal AM, establishing a full quantitative PSPP linkage is essential. It will not only help in understanding the underlying physics but will also serve as a powerful and effective tool for optimal computational design. In this work, we illustrate an example of ICME-based PSPP linkage in metal AM, along with a hybrid physics-based data-driven strategy for its application in the optimal design of a component. Finally, we discuss our outlook for the improvement of each part in the computational linking of the PSPP chain.

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“…The slip of dislocations in these slip systems will leave behind a perfect fcc lattice, so this kind of dislocations are called perfect dislocations. However, in general, a perfect dislocation is dissociated in two partial dislocations (named Shockley partial dislocation) in the slip system (111)[1 ̅ 10] through the dissociate reaction:…”

Section: Stacking Faults (Sf) Stacking Fault Energy (Sfe) and Its Rementioning

confidence: 99%

A general perspective of Fe–Mn–Al–C steels

Zambrano

2018

J Mater Sci

173

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During the last years, the scientific and industrial community have focused on the astonishing properties of Fe-Mn-Al-C steels. These high advanced steels allow high-density reductions about ~18% lighter than conventional steels, high corrosion resistance, high strength (ultimate tensile strength (UTS) ~1 Gpa) and at the same time ductility above 60%.The increase of the tensile or yield strength and the ductility at the same time is almost a special feature of this kind of new steels, which makes them so interesting for many applications such as in the automotive, armor and mining industry. The control of these properties depends on a complex relationship between the chemical composition of the steel, the test temperature, the external loads and the processing parameters of the steel. This review has been conceived to tried to elucidate these complex relations and gather the most important aspects of Fe-Mn-Al-C steels developed so far.

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PrecHiMn-4—A thermodynamic database for high-Mn steels

Cited by 39 publications

References 60 publications

Prediction of Martensite Start Temperature for Lightweight Fe-Mn-Al-C Steels

Prediction of Martensite Start Temperature for Lightweight Fe-Mn-Al-C Steels

Optimal Design for Metal Additive Manufacturing: An Integrated Computational Materials Engineering (ICME) Approach

A general perspective of Fe–Mn–Al–C steels

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