FEM modeling of the flow curves and failure modes of dual phase steels with different martensite volume fractions using actual microstructure as the representative volume

Marvi-Mashhadi, M.; Mazinani, Mohammad; Rezaee-Bazzaz, A.

doi:10.1016/j.commatsci.2012.07.032

Cited by 52 publications

(11 citation statements)

References 24 publications

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“…In the most of the large and medium enterprises the beginning of product production is not able to start, before its estimates properties are positively verified using the FEM calculations [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Internal Stresses in PVD Coated Tool Composites

Śliwa

Mikuła

Gołombek

et al. 2016

Archives of Metallurgy and Materials

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The aim of work is the investigation of the internal stresses in PVD coated metal matrix composites (MMC). Sintered MMC substrate is composed of the matrix with the chemical composition corresponding to the high-speed steel, reinforced with the TiC type hard carbide phase. Functionally graded composition of MMC providing of high ductility characteristic of steel in the core zone as well as high hardness characteristic of cemented carbides in the surface zone. Internal stresses were determined with use of finite element method in ANSYS environment. The reason of undertaking the work is necessity of develop the research of internal stresses, occurring in the coating, as well as in the adhesion zone of coating and substrate, which makes it possible to draw valuable conclusions concerning engineering process of the advisable structure and chemical composition of coatings. The investigations were carried out on cutting tool’s models containing defined zones differing in chemical composition. Modelled materials were characteristic of chemical composition corresponding to the high-speed steel at the core, reinforced with the TiC type hard carbide phase with the growing fraction of these phases in the outward direction from the core to the surface, additionally coated with (Ti,Al)N or Ti(C,N) functionally graded PVD coatings. Results of determined internal stresses were compared with the results calculated using experimental X-ray sin2ψ method. It was demonstrated, that the presented model meets the initial criteria, which gives ground to the assumption about its utility for determining the stresses in coatings as well as in functionally graded sintered materials. The results of computer simulations correlate with the experimental results.

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Section: Introductionmentioning

confidence: 99%

Internal Stresses in PVD Coated Tool Composites

Śliwa

Mikuła

Gołombek

et al. 2016

Archives of Metallurgy and Materials

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“…This group of steels is very interesting for light weight constructions because it combines a high ultimate strength with a high fracture strain [1]. Dual phase steels consisting of hard martensite islands within a ferrite matrix have received considerable attention due to their continuous yielding behavior, high work hardening rate and ductility [2]. The key microstructural characteristics for DP steel are the amount, strength and distribution of the martensite islands [3].…”

Section: Introductionmentioning

confidence: 99%

Micromechanics stress–strain behavior prediction of dual phase steel considering plasticity and grain boundaries debonding

2015

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“…In DP steels, martensite is present either in random order or in the banded form surrounded by the ferrite matrix. It is reported that the DP steels have strength in the order of 400-1000 MPa with elongation in the range 10-30% [1]. The micro-mechanical analysis of the DP steels is performed for predicting the macroscopic elasticplastic flow behavior.…”

Section: Introductionmentioning

confidence: 99%

A new method to generate artificial microstructure of dual phase steel using Teacher-Learner Based Optimization

Verma

Saxena

2019

Sādhanā

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The dual phase steels are widely used in the manufacturing and automobile industry. The micromechanical analysis of the dual phase steel using microstructure based representative volume elements is the effective methodology for the estimation of its macroscopic properties. The real microstructure of the dual phase steels obtained using different microscopic analysis methods depicts the two main constituents viz. martensite inclusion in the ferrite matrix. The distribution of martensite in ferrite matrix exhibits a number of control parameters to define its characteristics. Generation of the artificial microstructure of dual phase steel based on these controlling parameters is advantageous to get a-priori estimate of the macroscopic properties and behavior. In the present work, a model is proposed for predicting the artificial microstructure of dual phase steel. The volume fraction of martensite and connectivity of the martensite in the ferrite matrix are used as controlling parameters to generate the artificial microstructure using the Teacher-Learner Based Optimization algorithm. The model has effectively predicted the microstructure of the DP590 steel. The artificial microstructure is applied for getting the tensile flow curve of the material using the finite element method. The predicted tensile response of the material is in good agreement with the experimental observations for DP590 steel. The model can be effectively applied to predict the artificial microstructure and subsequent micromechanical analysis of the dual phase steels.

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FEM modeling of the flow curves and failure modes of dual phase steels with different martensite volume fractions using actual microstructure as the representative volume

Cited by 52 publications

References 24 publications

Internal Stresses in PVD Coated Tool Composites

Internal Stresses in PVD Coated Tool Composites

Micromechanics stress–strain behavior prediction of dual phase steel considering plasticity and grain boundaries debonding

A new method to generate artificial microstructure of dual phase steel using Teacher-Learner Based Optimization

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