The effect of the twin boundaries on the yield stress of a material

Katarzyna Konopka , J.W. Wyrzykowski

Abstract

The aim of the study was to analyse theoretically how the twin boundaries formed in a material during recrystallization affect its yield stress. The yield stress (σ) was considered to be the sum of the two components: the stress (σGB) due to the effect of grain boundaries upon the propagation of slip and the stress (σTB) due to the presence of twin boundaries: σ = σGB + σTB Various correlations between the grain size, the frequency of twin boundaries and the yield stress of the material were considered in the analysis. It has been found that the effect of twin boundaries varies depending on whether they present strong or weak obstacles to the dislocation movements during plastic deformation or whether they themselves generate dislocations. Hence, the stress due to twin boundaries (σTB) can be expended into three components that represent the individual effects of the twin boundaries observed during plastic deformation.
Author Katarzyna Konopka (FMSE / DSMP)
Katarzyna Konopka,,
- Division of Ceramic Materials and Polymers
, J.W. Wyrzykowski - [Warsaw University of Technology (PW)]
J.W. Wyrzykowski,,
-
- Politechnika Warszawska
Journal seriesJournal of Materials Processing Technology, ISSN 0924-0136
Issue year1997
Vol64
No1–3
Pages223-230
ASJC Classification2209 Industrial and Manufacturing Engineering; 2506 Metals and Alloys; 1706 Computer Science Applications; 2611 Modelling and Simulation; 2503 Ceramics and Composites
DOIDOI:10.1016/S0924-0136(96)02571-X
URL http://www.sciencedirect.com/science/article/pii/S092401369602571X
Score (nominal)30
Score sourcejournalList
Publication indicators WoS Citations = 20; Scopus Citations = 25; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 0.755; WoS Impact Factor: 2006 = 0.615 (2) - 2007=1.133 (5)
Citation count*21 (2015-05-22)
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