Effect of Cold Rolling on Microstructure and Mechanical Properties of AISI 301LN Metastable Austenitic Stainless Steels

Huang, Junxia; Ye, Xiaoning; Zhou, Xinchi

doi:10.1016/s1006-706x(12)60153-8

Cited by 51 publications

(32 citation statements)

References 16 publications

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“…Growth of the αʹ-martensite occurs from the successive nucleation and coalescence of new nuclei. Consequently, new nuclei will be created as function of the new shear bands intersections 4 . The SFE depends on the chemical composition of the austenitic phase and on the process that induces the phase transformation and plays an important role in martensitic transformation.…”

Section: Introductionmentioning

confidence: 99%

Mechanically Induced Martensitic Transformation of Hot Rolled and Annealed 304L Austenitic Stainless Steel at Room and Cryogenic Temperatures

2019

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The 304L austenitic stainless steel is susceptible to mechanically induced martensitic transformation from slightly above room temperature down to cryogenic temperatures. In this work, austenitic 304L steel produced by two different thermomechanical processes, hot rolling (HR) and cold rolling and annealing (CR/A), were subjected to martensitic transformation by rolling and by tensile tests at 298 K and 155 K and the volume fraction of martensite was determined by X-ray diffraction and ferritescope measurements. The results showed that the martensitic transformation was complete for CR/A samples rolled at 155 K and that the volume fraction of martensite was larger in CR/A samples than in HR samples in all cases.

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Section: Introductionmentioning

confidence: 99%

Mechanically Induced Martensitic Transformation of Hot Rolled and Annealed 304L Austenitic Stainless Steel at Room and Cryogenic Temperatures

2019

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“…Many scientists [1][2][3][4][5] have focused their efforts on explaining the effects of the martensitic phase transformation on the resulting microstructure and mechanical properties at a wide range of strain rates. The strain rate, temperature, and adiabatic heating influence the active microplastic mechanisms that govern the overall mechanical behavior and plasticity of the steel.…”

Section: Introductionmentioning

confidence: 99%

Strain rate jump tests on an austenitic stainless steel with a modified tensile Hopkinson split bar

et al. 2018

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This paper presents an improved experimental setup for high strain rate testing based on the modified Tensile Hopkinson Split Bar device developed previously at TUT. The test setup can be used to study the effects of a sudden large change in the strain rate on the stress flow of the material. The setup allows deforming the sample at a low rate and at isothermal conditions before the high rate loading. During the strain rate jump, the deformation rate is rapidly increased by approximately six orders of magnitude. In this work, the low and high rate deformation of the specimen was recorded with a combination of low and high-speed digital cameras and analyzed using the Digital Image Correlation technique. The measurement provides information about the effects of the strain rate jump on the macroscopic response of the material and allows accurate observation of the deformation of the sample just before, during, and immediately after the strain rate jump, when the conditions change from isothermal to adiabatic. In this paper, we present the results for a metastable austenitic stainless steel and discuss the effects of the strain rate jump on the strain-hardening rate, compare the experimental results with numerical results from a thermomechanical model, and evaluate the effects of the preceding deformation at a low strain rate on the strain localization. We conclude that the strain rate jump results in a clear decrease in the strain-hardening rate, the deformation following the jump is uniform along the gauge section, and that the strain localization is not significantly affected by the strain rate or the amount of pre-strain in the studied conditions.

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“…They discussed the effect of roller diameters on the void closing. The diffusion welding process of internal porosity defects in heavy forging was studied by Huang et al who discussed the elimination mechanism of void defects [10]. Zhang et al [11] have investigated the closure of spherical void.…”

Section: Introductionmentioning

confidence: 99%

Closure behavior of spherical void in slab during hot rolling process

Cheng

Zhang

Wang

2018

Metall. Res. Technol.

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The mechanical properties of steels are heavily deteriorated by voids. The influence of voids on the product quality should be eliminated through rolling processes. The study on the void closure during hot rolling processes is necessary. In present work, the closure behavior of voids at the center of a slab at 800 °C during hot rolling processes has been simulated with a 3D finite element model. The shape of the void and the plastic strain distribution of the slab are obtained by this model. The void decreases along the slab thickness direction and spreads along the rolling direction but hardly changes along the strip width direction. The relationship between closure behavior of voids and the plastic strain at the center of the slab is analyzed. The effects of rolling reduction, slab thickness and roller diameter on the closure behavior of voids are discussed. The larger reduction, thinner slab and larger roller diameter all improve the closure of voids during hot rolling processes. Experimental results of the closure behavior of a void in the slab during hot rolling process mostly agree with the simulation results..

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Effect of Cold Rolling on Microstructure and Mechanical Properties of AISI 301LN Metastable Austenitic Stainless Steels

Cited by 51 publications

References 16 publications

Mechanically Induced Martensitic Transformation of Hot Rolled and Annealed 304L Austenitic Stainless Steel at Room and Cryogenic Temperatures

Mechanically Induced Martensitic Transformation of Hot Rolled and Annealed 304L Austenitic Stainless Steel at Room and Cryogenic Temperatures

Strain rate jump tests on an austenitic stainless steel with a modified tensile Hopkinson split bar

Closure behavior of spherical void in slab during hot rolling process

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