The effect of the twin boundaries on the yield stress of a material
Katarzyna Konopka , J.W. Wyrzykowski
AbstractThe 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.
|Journal series||Journal of Materials Processing Technology, ISSN 0924-0136|
|ASJC Classification||; ; ; ;|
|Publication indicators||= 20; = 25; : 1999 = 0.755; : 2006 = 0.615 (2) - 2007=1.133 (5)|
|Citation count*||21 (2015-05-22)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.