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Title:Optimum hardness for maximum fatigue strength of steel
Author(s):Morrow, JoDean; Halford, G.R.; Millan, J.F.
Subject(s):Hardness
Fatigue Strength
Steel
Abstract:Observations relating to an optimum hardness for maximum fatigue strength of steels are reviewed. Data are presented to illustrate the influence of hardness on the mechanical behavior of SAE 1045 steel. Suggested causes for decreased strength and ductility at high hardness are discussed, and the idea is advanced that a transition from shear to tensile governed failure takes place as hardness increases. Resistance to shear stress is envisioned as increasing with hardness while the resistance to tensile stress decreases causing a sharp drop in ductility and strength. This view of the fatigue resistance of hard steels suggests ways to improve performance of hard steels permitting the full strength of potential to be realized.
Issue Date:1966-05
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 288
1966-0445
Genre:Technical Report
Type:Text
Language:English
URI:http://hdl.handle.net/2142/112011
ISSN:0073-5264
Rights Information:Copyright 1966 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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