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Research on Rolling Contact Fatigue Strength of Two Phases A11oy Steel Containing Martensite+Ferrite or Pearlite+Ferrite

Bulletin of the Faculty of Education, Yamaguchi University. Natural science Volume 33 Issue 2 Page 33-41
published_at 1983-09
Title
合金鋼におけるマルテンサイト+フェライトおよびパーライト+フェライトニ相材のころがり疲労強度について
Research on Rolling Contact Fatigue Strength of Two Phases A11oy Steel Containing Martensite+Ferrite or Pearlite+Ferrite
Creators Fukui Takashi
Source Identifiers
In order to elucidate the influence of the variation of the ferrite content of matrix on the rolling contact fatigue strength of SCM 21, the ferrite content of which is changed with heat treatment, the author conducted experiment using a Nishihar type wear testing machine under lubricated state with sliding The results obtained are summarized as follows : 1)The rolling contact fatigue endurance limits of two phases alloy steel,the ferrite content of which is changed with heat treatment, are lower compared with one phase alloy steel, The tendency is stronger with increasing amount of ferrite and matrix hardness. 2)Since ferrite is considered as a sort of internal defect,the reduction factor for two phases alloy steel was large compared with one phase alloy steel,regardless the amount of ferrite and matrix hardness. 3)The crack propagation along boundary of ferrite and matrix, and after that it penetrates into the the vicinity of the region where the stress value calculated according to the maximum shearing stress theory reached the maximum and the crack propagation gone in the parallel direction with the contact surface.
Subjects
自然科学 ( Other)
Languages eng
Resource Type departmental bulletin paper
Publishers 山口大学教育学部
Date Issued 1983-09
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0513-1693
[NCID]AN00243950
Schools 教育学部