Influence of Retained Austenite, Strain Induced Martensite and Pre-Loaded Stress upon Compressive Residual Stress with Shot Peening Method

Eto, Hirohito; Matsui, Katsuyuki; Jin, Yasuyuki; Ando, Kotoji

doi:10.1299/kikaia.69.733

Cited by 14 publications

(3 citation statements)

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“…However, it is inferred that this influence nearly didn't occur because the γ r volume fraction is low. Also there is a report that compressive stress is relaxed by plastic deformation due to shot peening [11].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Residual Stress in Shot-Peened Tool by Means of Synchrotron Radiation Using an Area Detector

Miyazawa

Yaguchi²,

Sasaki

2010

MSF

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In this study, the authors investigated the application of the area detector type method for the purpose of evaluating residual stress in tools having a V-groove. The specimen used was a shot-peened forming rack. This alternative method uses a diffraction ring and single incidence X-ray to clarify precisely and effectively complex stresses and stresses in narrow parts of the tools such as the teeth on the surface of the rack. In addition, the authors evaluated stress gradients generated after shot peening using synchrotron radiation (SR).

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Section: Discussionmentioning

confidence: 99%

Evaluation of Residual Stress in Shot-Peened Tool by Means of Synchrotron Radiation Using an Area Detector

Miyazawa

Yaguchi²,

Sasaki

2010

MSF

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“…Many researchers found that shot peening considerably increases the fatigue strength of the conventional case-hardening martensitic steels [49][50][51][52][53][54][55][56][57][58][59]. Sugimoto et al [60][61][62] have reported that high fatigue strength and low notch-sensitivity for fatigue of the TM steel are achieved by fine-particle peening and/or vacuum carburization because of small surface roughness and the improved surface-hardened layer properties.…”

Section: Introductionmentioning

confidence: 99%

An Overview of Fatigue Strength of Case-Hardening TRIP-Aided Martensitic Steels

Sugimoto

Hojo

Srivastava³

2018

Metals

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Surface-hardened layer characteristics and fatigue strength properties of transformationinduced plasticity-aided martensitic steels subjected to heat-treatment or vacuum carburization followed by fine-particle peening are revealed for automotive applications specially for powertrain parts. The as-heat-treated steels without the case-hardening process possess excellent impact toughness and fatigue strength. When the steels are subjected to fine-particle peening after heat-treatment, the fatigue limits of smooth and notched specimens increase considerably, accompanied with low notch sensitivity. Vacuum carburization and subsequent fine-particle peening increases further the fatigue strength of the steels, except notch fatigue limit. The increased fatigue limits are principally associated with high Vickers hardness and compressive residual stress just below the surface, resulting from the severe plastic deformation and the strain-induced martensitic transformation of metastable retained austenite, as well as low surface roughness and fatigue crack initiation depth.

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“…2 However, the compound layer of the component is broken by this technique. It is known to increase the surface roughness and decrease the wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Cavitation peening to improve the fatigue strength of nitrocarburized steel

Fukuda¹,

Matsui²,

Ishigami³

et al. 2008

Fatigue Fract Eng Mat Struct

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A B S T R A C T Shot peening is a commonly employed technique used to improve the fatigue strength of nitrocarburized components. However, the compound layer of the component can be broken by this technique. Cavitation peening (CP) is an alternative shotless technique, which can increase the fatigue strength of the component without separation of the compound layer. To evaluate the potential of CP as a means for improving fatigue strength, nitrocarburized carbon steel (JIS S50C) has been analyzed in the non-peened and CP conditions. The fatigue strength of CP specimens was increased by 15% in comparison with that of non-peened specimens. This increase in the fatigue strength of CP specimen was achieved by the increase in the maximum hardness and compressive residual stress within the diffusion zone.

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Influence of Retained Austenite, Strain Induced Martensite and Pre-Loaded Stress upon Compressive Residual Stress with Shot Peening Method

Cited by 14 publications

References 0 publications

Evaluation of Residual Stress in Shot-Peened Tool by Means of Synchrotron Radiation Using an Area Detector

Evaluation of Residual Stress in Shot-Peened Tool by Means of Synchrotron Radiation Using an Area Detector

An Overview of Fatigue Strength of Case-Hardening TRIP-Aided Martensitic Steels

Cavitation peening to improve the fatigue strength of nitrocarburized steel

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