Mesoscopic Analysis of Deformation Heterogeneity and Recrystallization Microstructures of a Dual-Phase Steel Using a Coupled Simulation Approach

Jia, Chunxu; Shen, Gang; Chen, Wenxiong; Hu, Baojia; Chen, Zheng; Li, Dianzhong

doi:10.1007/s40195-020-01155-4

Cited by 10 publications

(2 citation statements)

References 35 publications

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“…As the holding time is prolonged, the volume percentage of recrystallized ferrite rose. [30,31] The austenite grains evenly develop at the ferrite grain boundaries after the Ac 1 temperature. Finally, during quenching, the austenite grains change into martensite islands, resulting in a DP steel with a uniform distribution of martensite islands in the ferrite matrix.…”

Section: Microstructural Evolutionmentioning

confidence: 99%

Effect of Intercritical Annealing Time on the Microstructure and Mechanical Properties of Dual‐Phase Steel Processed by Large‐Strain Asymmetric Cold‐Rolling

Khorasani

Jamaati

Aval

2023

steel research int.

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Herein, the effect of intercritical annealing time on the microstructure and mechanical properties of dual‐phase steel processed by large‐strain asymmetric cold‐rolling is studied. It is observed that the martensite islands are uniformly distributed in the ferrite phase in the microstructures of dual‐phase steels due to performing the asymmetric cold‐rolling before intercritical annealing treatment. As the intercritical annealing time increases up to 10 min, the fraction of martensite increases. By increasing the holding time and fraction of martensite, the carbon content of the martensite phase is decreased. The short‐term intercritical annealing eliminates the yield point phenomenon. However, intercritical annealing at 860 °C for 20 min leads to the reoccurrence of a yield point phenomenon. Increasing the intercritical annealing time to 10 min improves the yield strength to 505 MPa and ultimate tensile strength to 834 MPa. However, the strength decreases sharply after the holding time of 20 min. There is a perfect linear relationship between the mechanical properties and the fraction of martensite. Ductile failure is observed at the center of the fracture surfaces of dual‐phase steels while shear failure occurs at the edges of the fracture surfaces.

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Section: Microstructural Evolutionmentioning

confidence: 99%

Effect of Intercritical Annealing Time on the Microstructure and Mechanical Properties of Dual‐Phase Steel Processed by Large‐Strain Asymmetric Cold‐Rolling

Khorasani

Jamaati

Aval

2023

steel research int.

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“…DP steels are a class of the advanced high strength steels (AHSS) family that are currently used in automotive applications. Their microstructure is usually composed of 10-40 vol.% of martensite islands in the ferrite matrix [15][16][17]. Miles et al [18] investigated the feasibility of joining DP590 steel by FSW.…”

Section: Introductionmentioning

confidence: 99%

EBSD Characterization of Microstructure and Micro-texture in a Friction Stir-Welded DP600 Steel

Ashrafi

Shamanian

Sanayei

et al. 2023

Acta Metall. Sin. (Engl. Lett.)

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The microstructure and micro-texture in different areas of a friction stir (FS)-welded DP600 steel were investigated by means of electron backscatter diffraction. The volume fraction of martensite and non-polygonal ferrite was evaluated based on the image quality (IQ) parameter. Analysis of grain boundaries revealed that the fraction of sub-grain boundaries as well as that of low-angle grain boundaries in the heat-affected zone (HAZ) and stir zone (SZ) was more than doubled compared to those in the DP600 steel base metal (BM). The micro-texture examination of the BM showed strong {112} < 110 > and {111} < 112 > components with an intensity 4.6 times of that random texture. The texture showed a memory effect in the HAZ, with a reduced overall intensity. Within the SZ, D 1 , D 2 and E shear texture components together with a cube component were developed. Formation of these texture components of ferrite were attributed to the transformation of B and R texture components of prior austenite, which are evidences of continuous dynamic recrystallization mechanism in the SZ of the friction stir-welded DP600 steel.

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Prediction of mixed grains during hot deformation of 12%Cr heat-resistant steel by coupling method of DRX-CA and FE simulation

Xu,

Liu

2024

J Mater Sci

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Mesoscopic Analysis of Deformation Heterogeneity and Recrystallization Microstructures of a Dual-Phase Steel Using a Coupled Simulation Approach

Cited by 10 publications

References 35 publications

Effect of Intercritical Annealing Time on the Microstructure and Mechanical Properties of Dual‐Phase Steel Processed by Large‐Strain Asymmetric Cold‐Rolling

Effect of Intercritical Annealing Time on the Microstructure and Mechanical Properties of Dual‐Phase Steel Processed by Large‐Strain Asymmetric Cold‐Rolling

EBSD Characterization of Microstructure and Micro-texture in a Friction Stir-Welded DP600 Steel

Prediction of mixed grains during hot deformation of 12%Cr heat-resistant steel by coupling method of DRX-CA and FE simulation

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