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Title:Fatigue strength of lapelloy as influenced by heat transfer treatment and surface finishing methods
Author(s):Morrow, JoDean; Sinclair, G.M.
Subject(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.
Issue Date:1957-04
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 540
Genre:Technical Report
Sponsor:General Electric Company Evendale Plant Lab 57/04
Rights Information:Copyright 1957 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    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.

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