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ON THE HALL-PETCH RELATIONSHIP AND SUBSTRUCTURAL EVOLUTION IN TYPE 316L STAINLESS-STEEL

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Field Value
 
Title ON THE HALL-PETCH RELATIONSHIP AND SUBSTRUCTURAL EVOLUTION IN TYPE 316L STAINLESS-STEEL
 
Creator KASHYAP, BP
TANGRI, K
 
Subject grain-size
flow behavior
deformation
polycrystals
temperature
dependence
aluminum
nickel
stress
strain
 
Description Tensile specimens of Type 316L stainless steel having grain sizes in the range 3.1-86.7 mu m were deformed to 34% strain at temperatures 24, 400 and 700 degrees C and strain rate 1 x 10(-4) s(-1) to investigate the Hall-Petch (H-P) relationship, the nature of stress-strain curves and the substructure development. Up to similar to 5% strain the H-P relationship exhibits bi-linearity whereas the single Hall-Fetch relation is exhibited at larger strains. The presence of bi-linearity is explained by the back stress associated with the difference in the dislocation densities in the vicinity of grain boundary and in the grain interior. The log stress (sigma)-log strain (epsilon) plots depict three regimes and follow the relationship sigma = K epsilon(n) in each regime, but with varying magnitudes of the strength coefficient (K) and strain-hardening exponent (n).
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-25T18:33:19Z
2011-12-26T12:57:10Z
2011-12-27T05:47:03Z
2011-08-25T18:33:19Z
2011-12-26T12:57:10Z
2011-12-27T05:47:03Z
1995
 
Type Article
 
Identifier ACTA METALLURGICA ET MATERIALIA, 43(11), 3971-3981
0956-7151
http://dx.doi.org/10.1016/0956-7151(95)00110-H
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11110
http://hdl.handle.net/10054/11110
 
Language en