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Title:Mechanical behavior of columbium containing oxygen
Author(s):Enrietto, J.F.; Sinclair, G.M.; Wert, C.A.
Abstract:It has been shown that columbium is extremely susceptible to strain aging, both in tension and in fatigue when small amounts of oxygen are present in solid solution. The temperature at which maximum strain aging occurs is apparently a function of the strain rate (frequency of loading in fatigue), and for the rates used in the present experiments maximum strengthening occurred at 500°C in tension and 400°C in fatigue. The stress magnitude of the strain aging peak for both tension and fatigue is dependent upon the oxygen concentration. Strengthening due to strain aging increases very rapidly with increasing oxygen content up to approximately 0.02 weight per cent which corresponds to one oxygen atom per dislocation per atom plane, in the severely deformed metal. Oxygen in excess of 0.02 weight per cent contributes relatively little additional strengthening at the temperature of maximum strain aging.
Issue Date:1960-04
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 163
Genre:Technical Report
Sponsor:Atomic Energy Commission, Contract No. AT (11-1)-67, Project 20
Rights Information:Copyright 1960 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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