On the strain rate sensitivity of aluminum-containing transformation-induced plasticity steels: Interplay between TRIP and TWIP effects

Li, K.; Injeti, V.S.Y.; Misra, R.D.K.; Cai, Zhiping; Ding, Hua

doi:10.1016/j.msea.2017.11.055

Cited by 19 publications

(5 citation statements)

References 38 publications

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“…[9] They are relatively cheap and can offer an improved combination of mechanical properties under certain conditions. [10][11][12][13] It is generally agreed that both high strength and plasticity in high-to-medium-Mn steels is governed by the austenitic phase, which exhibits TWIP or TRIP effects depending on SFE and austenite stability. [9,14,15] Thus, an increase in austenite fraction should be favorable for the mechanical properties of medium-Mn steels.…”

Section: High-mn Structural Steels Have Aroused a Greatmentioning

confidence: 99%

Effect of Warm to Hot Rolling on Microstructure, Texture and Mechanical Properties of an Advanced Medium-Mn Steel

Tikhonova

Torganchuk

Brasche

et al. 2019

Metall Mater Trans A

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The deformation microstructures and mechanical properties were studied in a medium-Mn austenitic steel subjected to warm-to-hot rolling. During warm rolling at temperatures of T < 1073 K the structural changes were controlled by dynamic and static recovery leading to a pancaked work-hardened microstructure, during hot rolling at T ‡ 1073 K-by discontinuous dynamic and post-dynamic recrystallization resulting in equiaxed grains. The grain size decreased while the dislocation density increased with a decrease in rolling temperature. A decrease in rolling temperature enhanced the texture development, which consisted of relatively strong Brass, S and P components. The Brass component exhibited the strongest temperature dependence. A decrease in rolling temperature resulted in significant strengthening of the steel. The yield strength increased from 340 to 950 MPa as rolling temperature decreased from 1373 K to 773 K. Both the grain refinement and the work-hardening contributed to the strengthening.

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Section: High-mn Structural Steels Have Aroused a Greatmentioning

confidence: 99%

Effect of Warm to Hot Rolling on Microstructure, Texture and Mechanical Properties of an Advanced Medium-Mn Steel

Tikhonova

Torganchuk

Brasche

et al. 2019

Metall Mater Trans A

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“…In addition, the test method is applicable for the characterization of nano-and microscopic mechanical behaviors through the control of the magnitude of the applied load. Therefore, instrumented indentation tests have been widely employed in material science and engineering, e.g., the studies of scale-dependent plasticity [1][2][3], microscopic heterogeneity [4][5][6], and complex deformation mechanisms [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Strain-Rate-Dependent Plasticity of Alloys Using Instrumented Indentation Tests

2021

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Instrumented indentation tests are an efficient approach for the characterization of stress–strain curves instead of tensile or compression tests and have recently been applied for the evaluation of mechanical properties at elevated temperatures. In high-temperature tests, the rate dependence of the applied load appears to be dominant. In this study, the strain-rate-dependent plasticity in instrumented indentation tests at high temperatures was characterized through the assimilation of experiments with a simulation model. Accordingly, a simple constitutive model of strain-rate-dependent plasticity was defined, and the material constants were determined to minimize the difference between the experimental results and the corresponding simulations at a constant high temperature. Finite element simulations using a few estimated mechanical properties were compared with the corresponding experiments in compression tests at the same temperature for the validation of the estimated material responses. The constitutive model and determined material constants can reproduce the strain-rate-dependent material behavior under various loading speeds in instrumented indentation tests; however, the load level of computational simulations is lower than those of the experiments in the compression tests. These results indicate that the local mechanical responses evaluated in the instrumented indentation tests were not consistent with the bulk responses in the compression tests at high temperature. Consequently, the bulk properties were not able to be characterized using instrumented indentation tests at high temperature because of the scale effect.

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“…As a kind of third‐generation advanced high strength steels (AHSS), medium‐Mn TRIP steels are mainly used for structural components responsible for car body strength and energy absorption. [ 5–7 ] During the forming and service process, steels are subject to deformation at various strain rates. With regard to other kinds of AHSS such as twinning‐induced plasticity (TWIP) steels and quenching and partitioning (Q&P) steels, the deformation behavior at different strain rates has already been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Strain Rate Effect on Microstructural Evolution and Deformation Behavior of Medium‐Mn Transformation‐Induced Plasticity Steels

Zhou

Song

Huo

et al. 2020

steel research int.

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Herein, the effect of strain rate (10−4–10−1 s−1) on the microstructural evolution and deformation behavior of medium‐Mn transformation‐induced plasticity (TRIP) steels is investigated. The steel after intercritical annealing exhibits an austenite–martensite–ferrite triplex microstructure with a relatively high austenite fraction (66.1%). A negative strain rate dependence of ultimate tensile strength (UTS) and significant serrated behavior are found during the room temperature tensile test. The total elongation (TE) attains a maximum value of 32.0% at the strain rate of 10−2 s−1 and then decreases with increasing strain rate. The evolution of strain‐induced martensitic transformation (SIMT) as a function of strain rate is analyzed considering the adiabatic heating during deformation. The different degrees of SIMT under different strain rates lead to a fracture transition between quasicleavage fracture and ductile fracture. The delamination cracks originating from the interface of martensite and austenite are closely related with the quantity and the local strain of the martensite–austenite interface.

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On the strain rate sensitivity of aluminum-containing transformation-induced plasticity steels: Interplay between TRIP and TWIP effects

Cited by 19 publications

References 38 publications

Effect of Warm to Hot Rolling on Microstructure, Texture and Mechanical Properties of an Advanced Medium-Mn Steel

Effect of Warm to Hot Rolling on Microstructure, Texture and Mechanical Properties of an Advanced Medium-Mn Steel

Characterization of the Strain-Rate-Dependent Plasticity of Alloys Using Instrumented Indentation Tests

Strain Rate Effect on Microstructural Evolution and Deformation Behavior of Medium‐Mn Transformation‐Induced Plasticity Steels

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