Effects of fine particle peening on fatigue strength of transformation-induced plasticity (TRIP)-aided martensitic steel

Koh Ichi Sugimoto, Yuta Mizuno, Tomohiko Hojo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

The effects of fine particle peening on the torsional strength of a transformation-induced plasticity (TRIP)-aided martensitic (TM) steel were investigated for applications to precision gears. Fine particle peening increased the fatigue limits and lowered the notch-sensitivities of steel, compared with quenched and subsequently tempered SNCM420 steel. In addition, fine particle peening lowered the fatigue crack propagation rate in TM steel with a high threshold value of the stress intensity range. These results were associated with (1) higher Vickers hardness, (2) higher compressive residual stress, and (3) a larger amount of untransformed retained austenite in the surface layer when compared with SNCM420 steel.

Original languageEnglish
Title of host publicationAdvances in Fracture and Damage Mechanics XIV
EditorsDarko Bajic, Zdenko Tonkovic, Ferri Aliabadi
PublisherTrans Tech Publications Ltd
Pages85-88
Number of pages4
ISBN (Print)9783038355410
DOIs
Publication statusPublished - 2016
Externally publishedYes
Event14th International Conference on Fracture and Damage Mechanics, FDM 2015 - Budva, Montenegro
Duration: 2015 Sep 212015 Sep 23

Publication series

NameKey Engineering Materials
Volume665
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other14th International Conference on Fracture and Damage Mechanics, FDM 2015
CountryMontenegro
CityBudva
Period15/9/2115/9/23

Keywords

  • Fine particle peening
  • Residual stress
  • Retained austenite
  • Strain-induced transformation
  • Torsional fatigue strength
  • Transformation-induced plasticity (TRIP)-aided martensitic steel

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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