On the impact of deep rolling at different temperatures on the near surface microstructure and residual stress state of steel AISI 304

Kongthep, J.; Timmermann, Klaus; Scholtes, Berthold; Niendorf, Т.

doi:10.1002/mawe.201700198

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…The 3D-plot depicted clearly reveals that the maximum -martensite phase fraction is present at a distance of about 0.075 mm to 0.125 mm from the surface. Compared to the residual stress depth profile (Figure 8) in the longitudinal direction, this is apparently the area undergoing the highest Hertzian pressure during the deep rolling process [36]. After the -martensite phase fraction reaches its maximum, the amount decreases constantly.…”

Section: Characterization Of the Near Surface Propertiesmentioning

confidence: 87%

On the Evolution of Residual Stresses, Microstructure and Cyclic Performance of High-Manganese Austenitic TWIP-Steel after Deep Rolling

Oevermann

Wegener

Niendorf

2019

Metals

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The mechanical properties and the near surface microstructure of the high-manganese twinning-induced plasticity (TWIP) steel X40MnCrAl19-2 have been investigated after deep rolling at high (200 °C), room and cryogenic temperature using different deep rolling forces. Uniaxial tensile tests reveal an increase in yield strength from 400 to 550 due to surface treatment. The fatigue behavior of selected conditions was analyzed and correlated to the prevailing microstructure leading to an increased number of cycles to failure after deep rolling. Deep rolling itself leads to high compressive residual stresses with a stress maximum of about 800 in the subsurface volume characterized by the highest Hertzian pressure and increased hardness up to a distance to the surface of approximately 1 mm with a maximum hardness of 475 0.1. Due to more pronounced plastic deformation, maximum compressive residual stresses are obtained upon high-temperature deep rolling. In contrast, lowest compressive residual stresses prevail after cryogenic deep rolling. Electron backscatter diffraction (EBSD) measurements reveal the development of twins in the near surface area independently of the deep rolling temperature, indicating that the temperature of the high-temperature deep rolling process was too low to prevent twinning. Furthermore, deep rolling at cryogenic temperature leads to a solid–solid phase transformation promoting martensite. This leads to inferior fatigue behavior especially at higher loads caused by premature crack initiation. At relatively low loads, all tested conditions show marginal differences in terms of number of cycles to failure.

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Section: Characterization Of the Near Surface Propertiesmentioning

confidence: 87%

On the Evolution of Residual Stresses, Microstructure and Cyclic Performance of High-Manganese Austenitic TWIP-Steel after Deep Rolling

Oevermann

Wegener

Niendorf

2019

Metals

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“…Gharbi et al [13] detected a hardened layer of 800 µm with surface hardness of approximately 500 HV 0.1 after deep rolling of AISI 304, the machined condition presented a hardened layer of 400 µm and surface hardness of 380 HV 0.1 . Also considering the treatment of AISI 304 Kongthep et al [16] detected an increase on surface hardness reaching a depth of approximately 0.4 mm. Kloos et al [17] investigated the influence of deep cold rolling over the fatigue resistance of pieces produced with DIN 37CrS4 steel.…”

Section: Introductionmentioning

confidence: 99%

“…The change on residual stresses characteristics from tensile to compressive after deep rolling of AISI 304 was also observed by Gharbi et al [18], the machined surface presented values of 339 MPa, and after deep rolling the measured values were -383 MPa. Kongthep et al [16] observed compressive residual stresses on depths up to 1 mm after deep rolling AISI 304 with a force of 500 N When the burnishing is conducted on a milling machine or machining center, it is called Low Plasticity Burnishing (LPB), whose task is to increase the surface quality of the machined sample. On this case there are not many restrictions regarding the workpiece geometry or the tool path movement [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of the hydrostatic ball burnishing on surface quality and ultra-microhardness

de Oliveira,

Martins,

Santos

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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“…Following the TWIP and TRIP effect, new deformation mechanisms, namely the shear-band-induced plasticity (SIP) [27], the microband-induced plasticity (MBIP) [28], the slip-band refinement-induced plasticity (SRIP) [29] or the dynamic slip band refinement (DSBR) [30], have been reported. A detailed summary of these deformation mechanisms is presented in [31]. In HMnS, the SFE itself is strongly influenced by the alloying concept as well as the deformation temperature, highlighting the influence of these two parameters on the active deformation mechanisms [5,13,14,18,32].…”

Section: Introductionmentioning

confidence: 99%

Consequences of Deep Rolling at Elevated Temperature on Near-Surface and Fatigue Properties of High-Manganese TWIP Steel X40MnCrAl19-2

et al. 2021

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Due to pronounced work-hardening induced by the complex interplay of deformation mechanisms such as dislocation slip, twinning and/or martensitic phase transformation, high-manganese steels represent a class of materials well-suited for mechanical surface treatment. In the present study, the fatigue behavior of a high-mangsanese steel showing twinning-induced plasticity (TWIP) effect at room temperature (RT) was investigated after deep rolling at 550 °C. Results are compared to a former study discussing the behavior after RT deep rolling. Evolution of the near-surface microstructure was analyzed by scanning electron microscopy (SEM), microhardness measurements and residual stress depth profiles obtained by X-ray diffraction (XRD). Both uniaxial tensile tests and uniaxial tension-compression fatigue tests have been conducted in order to rationalize the macroscopic material behavior. Following deep rolling at 550 °C, SEM measurements employing electron backscatter diffraction (EBSD) revealed a heavily deformed surface layer as well as localized deformation twinning. Specimens showed inferior hardness and residual stress depth profiles when compared to RT deep rolled counterparts. Tensile tests indicated no difference between the conditions considered. Fatigue properties however were improved. Such behavior is rationalized by a more stable residual stress state induced by dynamic strain aging.

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On the impact of deep rolling at different temperatures on the near surface microstructure and residual stress state of steel AISI 304

Cited by 8 publications

References 10 publications

On the Evolution of Residual Stresses, Microstructure and Cyclic Performance of High-Manganese Austenitic TWIP-Steel after Deep Rolling

On the Evolution of Residual Stresses, Microstructure and Cyclic Performance of High-Manganese Austenitic TWIP-Steel after Deep Rolling

Influence of the hydrostatic ball burnishing on surface quality and ultra-microhardness

Consequences of Deep Rolling at Elevated Temperature on Near-Surface and Fatigue Properties of High-Manganese TWIP Steel X40MnCrAl19-2

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