Mesoscale simulations of microstructure and texture evolution during deformation of columnar grains

G. Sarma, B. Radhakrishnan, T. Zacharia

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

In recent years, microstructure evolution in metals during deformation processing has been modeled at the mesoscale by combining the finite element method to discretize the individual grains with crystal plasticity to provide the constitutive relations. This approach allows the simulations to capture the heterogeneous nature of grain deformations due to interactions with neighboring grains. The application of this approach to study the deformations of columnar grains present in solidification microstructures is described. The microstructures are deformed in simple compression, assuming the easy growth direction of the columnar grains to be parallel to the compression axis in one case, and perpendicular in the other. These deformations are similar to those experienced by the columnar zones of a large cast billet when processed by upsetting and drawing, respectively. The simulations show that there is a significant influence of the initial microstructure orientation relative to the loading axis on the resulting changes in grain shape and orientation.

Original languageEnglish
Title of host publicationMicrostructure Modeling and Prediction During Thermomechanical Processing
EditorsR. Srinivasan, S.L. Semiatin, A. Beaudoin, S. Fox, Z. Jin, R. Srinivasan, S,L. Semiatin, A. Beaudoin, S. Fox, Z. Jin
Pages37-46
Number of pages10
StatePublished - 2001
EventMicrostructure Modeling and Prediction During Thermomechanical Processing - Indianapolis, ID, United States
Duration: Nov 4 2001Nov 8 2001

Publication series

NameMicrostructure Modeling and Prediction During Thermomechanical Processing

Conference

ConferenceMicrostructure Modeling and Prediction During Thermomechanical Processing
Country/TerritoryUnited States
CityIndianapolis, ID
Period11/4/0111/8/01

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