University of Illinois Urbana-Champaign

Fatigue strength of lapelloy as influenced by heat transfer treatment and surface finishing methods

Morrow, JoDean; Sinclair, G.M.

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https://hdl.handle.net/2142/112275

Description

Title
Fatigue strength of lapelloy as influenced by heat transfer treatment and surface finishing methods
Author(s)
  • Morrow, JoDean
  • Sinclair, G.M.
Issue Date
1957-04
Keyword(s)
  • Fatigue Strength
  • Heat Transfer Treatment
  • Surface Finishing
Abstract
A study was made at the fatigue and static tensile properties of a modified 403 stainless steel (designated as Lapelloy) as influenced by heat treatment hardness, residual stress, surface roughness and various finishing methods. It was found that at a hardness of Rockwell C 30 the strength properties were relatively insensitive to residual stress and surface roughness. Over a range of hardnesses from Rockwell C 20 to 40 the fatigue strength may be correlated with an error of less than ± 10% with surface hardness, core hardness or tensile strength. Metallographic examination of the heat treated samples disclosed soft pools of delta ferrite in the matrix which may be responsible for some loss of fatigue strength at high hardnesses.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 540
  • 1971-8574
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112275
Sponsor(s)/Grant Number(s)
General Electric Company Evendale Plant Lab 57/04
Copyright and License Information
Copyright 1957 Board of Trustees of the University of Illinois

Owning Collections

Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.