High-manganese dual-phase steels, strengthened by additional elements (Cr, Ti, V, W)

Terao, Nobuzo; Baugnet, A.

doi:10.1007/bf03372172

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…As DP steels show a good combination of strength, ductility, formability, weldability, and low price, they are extensively used in body structure of automobiles. [5,6] Several attempts to improve microstructure and mechanical properties of DP steels have been done in the recent years, and among them addition of alloying elements [7][8][9][10][11][12] was found to be an effective way. For instance, increasing the amounts of carbon, [9] manganese, [10] silicon, [11] and niobium [12] contents individually was reported to exhibit positive effects on the enhancement of mechanical properties of DP steels.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Dual‐Phase Steels by Combining Adjusted Initial Microstructures and Severe Plastic Deformation

Satjabut

Kalhor

Uthaisangsuk

et al. 2021

steel research int.

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Herein, the effects of initial microstructure in combination with the severe plastic deformation on the developed microstructures and mechanical properties of dual‐phase (DP) steels are investigated. DP steels are produced by an intercritical annealing from the preliminarily heat‐treated samples with different initial microstructures. The constrained groove pressing (CGP) process is additionally applied before the final intercritical annealing step. It is found that the martensitic and tempered martensitic microstructures lead to DP steels with a good balance of strength and elongation because of finer and more uniformly dispersed martensitic islands. The ferrite/pearlite banded initial microstructure is not a proper choice for intercritical annealing as all mechanical properties become worse. The CGP can be employed before intercritical annealing for refining microstructure and enhancing damage tolerance of DP steels. Nevertheless, the impacts of the CGP process on the resulted strength of DP steels are obviously different depending on the initial microstructures. The amounts, sizes, and distributions of dimples and cleavage facets on the fracture surfaces of DP steels correlate well with the corresponding microstructures and tensile characteristics.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Dual‐Phase Steels by Combining Adjusted Initial Microstructures and Severe Plastic Deformation

Satjabut

Kalhor

Uthaisangsuk

et al. 2021

steel research int.

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Designing dual-phase steels with improved performance using ANN and GA in tandem

Dutta

Dey

Datta

et al. 2019

Computational Materials Science

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Fracture Toughness Analysis of Automotive-Grade Dual-Phase Steel Using Essential Work of Fracture (EWF) Method

Kumar

Schmidová

Konopík

et al. 2020

Metals

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Fracture toughness determination of dual-phase DP450 steel using the essential work of fracture (EWF) methodology is the major focus of this research work. The EWF method is used for the determination of fracture toughness of thin sheets in a plane stress dominant condition. The EWF method is discussed in detail with the help of DP450 steel experimental results. Double edge notched tension (DENT) specimens with fatigue pre-crack and without fatigue crack (notched) have been used for testing. Specific essential work of fracture (we), crack tip opening displacement (δce) and crack tip opening angle (ψe) parameters were used for the comparative analysis. High-intensity laser beam cutting technology was used for the preparation of notches. Fracture toughness values of fatigue pre-cracked and notched samples were compared. The effect of notch tip radius and fatigue crack on the fracture toughness values were analysed. Digital image correlation (DIC) technology was used for the identification of local strain distribution and validation of the methodology. Fractured surfaces were examined by a scanning electron microscope (SEM) to analyse the fracture morphology and stress state.

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High-manganese dual-phase steels, strengthened by additional elements (Cr, Ti, V, W)

Cited by 4 publications

References 3 publications

Microstructure and Mechanical Properties of Dual‐Phase Steels by Combining Adjusted Initial Microstructures and Severe Plastic Deformation

Microstructure and Mechanical Properties of Dual‐Phase Steels by Combining Adjusted Initial Microstructures and Severe Plastic Deformation

Designing dual-phase steels with improved performance using ANN and GA in tandem

Fracture Toughness Analysis of Automotive-Grade Dual-Phase Steel Using Essential Work of Fracture (EWF) Method

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