Comparative experimental and numerical study on the mechanical properties, formability, and microstructure of two high strength steel sheets

Basaeri, Ali; Khorsand, H.; Eslami‐Farsani, Reza; Hasanniya, M. H.

doi:10.1007/s00170-020-05399-3

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…The edge ductility issue in dual-phase steels origins from their microstructure [5],which contains hard martensite in a soft ferritic matrix [6]. It means that a significant contrast exists in the mechanical properties of the constituent phases [7].…”

Section: Introductionmentioning

confidence: 99%

Initiation and growth of edge cracks after shear cutting of dual-phase steel

Khalilabad

Perdahcioglu

Atzema

et al. 2023

Int J Adv Manuf Technol

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Dual-phase steels suffer from low edge ductility, which limits their formability. In this study, an in-plane bending test is used to investigate the initiation and evolution of edge cracks. The edges of samples were prepared by shear cutting and afterwards further deformed by the in-plane bending test. Void distribution and non-uniform plastic deformation were explored with the help of scanning electron microscope (SEM) and electron backscatter diffraction (EBSD) analysis and microhardness measurement in different regions of the material edge. The extent of micro-cracks was revealed by microcomputed tomography (µCT) scan. The result shows that the blanking process creates inhomogeneous void distribution in the thickness direction. As the deformation increases during the subsequent in-plane bending test, the micro-cracks initiate at the burr region and grow towards the rollover region. Once they entirely pass the thickness of the material, they grow further, away from the edge. High roughness, plastic deformation, and void volume fraction were observed at the burr region, triggering crack initiation. The in-plane bending test successfully distinguished the dominant mechanism behind edge cracking.

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Section: Introductionmentioning

confidence: 99%

Initiation and growth of edge cracks after shear cutting of dual-phase steel

Khalilabad

Perdahcioglu

Atzema

et al. 2023

Int J Adv Manuf Technol

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“…[5,6] HSLA steels are also used in the automotive and construction industry because of their formability, weldability, and specific strength. [7][8][9] Also, they contain some molybdenum and chromium to improve hardenability. [10][11][12][13] Moreover, these steels contain some Cu (lower than 2%), which increases the corrosion resistance and also precipitation during tempering of martensite (resulting in the increase in strength through precipitation strengthening).…”

Section: Introductionmentioning

confidence: 99%

Synergistic Investigations of Post‐Deformation Annealing and Initial Microstructure on the Mechanical Properties of High Strength Low Alloy (HSLA)‐100 Steel

Heydarinia

Koushki

Rasooli

et al. 2021

steel research int.

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A high strength low alloy (HSLA)‐100 steel with different initial microstructures (ferrite and martensite) is processed by cold rolling at room temperature to the reduction of thickness about 70%. It is found that the recrystallization kinetics of the sample with a martensitic microstructure is higher than the sample with a ferritic microstructure. Moreover, the results show that the partitioning factor of substitution alloying elements is less effective than the strain in the martensitic phase transformation. Also, hardness results show that the samples with a martensitic microstructure have drastic drop compared with the samples with a ferritic microstructure, which is related to continuous recrystallization. Remarkable ultimate tensile strength and elongation to failure (829 MPa and 27.7%, respectively) are achieved for cold‐rolled martensite after tempering at 625 °C for 360 min. Accordingly, it is also found that the reason for remarkable mechanical properties is the simultaneous presence of recrystallized fine‐grained and deformed martensite, which forms an inhomogeneous microstructure.

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“…The hot rolling process of the wire rod is shown in Figure 1, which mainly includes the processes of start rolling, finishing rolling and spinning. Tensile strength characterises the resistance of the wire to the largest uniform plastic deformation, and the reduction of area is a performance indicator that measures the plastic deformation ability of the wire, which are tested offline based on the analytical specimen and hard to be measured online [2,3]. The uniformity of the wire refers to the consistency of the structure and performance on each segment of the wire.…”

Section: Introductionmentioning

confidence: 99%

Uniformity and comprehensive quality evaluation of steel product via process capability index and TOPSIS

Wang

Zhang

2021

Ironmaking & Steelmaking

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The overall quality of the steel wire is composed of the mechanical properties, the key process parameters, the geometrical parameters, surface quality, etc. A uniformity and comprehensive quality evaluation method of steel product based on the improved process capability index and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) is proposed. First, the uniformity of the process parameters is described by the volume ratio between the process data area and the specification area which is calculated via kernel density estimation. The relative closeness of the newly added batches is obtained by TOPSIS, which is used as a comprehensive quality evaluation index. A time dimension is added to the radar chart to visualize high-dimensional data, which is intuitive to compare the differences between batches. The results show that the evaluation method can accurately obtain the uniformity and comprehensive quality of steel products.

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Comparative experimental and numerical study on the mechanical properties, formability, and microstructure of two high strength steel sheets

Cited by 5 publications

References 29 publications

Initiation and growth of edge cracks after shear cutting of dual-phase steel

Initiation and growth of edge cracks after shear cutting of dual-phase steel

Synergistic Investigations of Post‐Deformation Annealing and Initial Microstructure on the Mechanical Properties of High Strength Low Alloy (HSLA)‐100 Steel

Uniformity and comprehensive quality evaluation of steel product via process capability index and TOPSIS

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