The yield behavior of niobium (columbium) has been studied under conditions of different states of stress, temperatures and strain rates, material compositions and microstructures.
Using data gathered in the present investigation as well as that obtained from ten other sources, it is shown that a relationship including the above variables is given by:
(_^γ ̇)G = Ae^((-[∆H*-V(τ_G-τ_iG )])/RT)
While details of the frequency factor A remain unclear, it appears that it may be treated as a constant over a wide range of temperatures and strain rates.
The analysis included in this paper shows that a simple parameter representation of yield behavior of niobium is feasible in terms of pertinent engineering variables.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
TAM R 244
1967-0540
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111963
Sponsor(s)/Grant Number(s)
United States Atomic Energy, Contract AT(11-1)-1046
Copyright and License Information
Copyright 1963 Board of Trustees of the University of Illinois
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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