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Controlling Plastic Flow across Grain Boundaries in a Continuum Model

Puri, Saurabh and Acharya, Amit and Rollett, Anthony D. (2011) Controlling Plastic Flow across Grain Boundaries in a Continuum Model. Metallurgical and Material Transactions A, 42A (3). pp. 669-675. ISSN 1073-5623. https://resolver.caltech.edu/CaltechAUTHORS:20110322-092427732

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Abstract

A framework for modeling controlled plastic flow through grain boundaries using a continuum plasticity theory, phenomenological mesoscopic field dislocation mechanics (PMFDM), is presented in this article. The developed tool is used to analyze the effect of different classes of constraints to plastic flow through grain boundaries, as it relates to dislocation microstructure development and mechanical response of a bicrystal. It is found that in the case of low misorientation angle between adjacent grains, impenetrable grain boundaries cause significant work hardening as compared to penetrable grain boundaries due to the accumulation of excess dislocations along them. However, a penetrable grain boundary with a high misorientation angle effectively behaves as an impenetrable boundary, with respect to the stress-strain response.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/s11661-010-0257-8DOIUNSPECIFIED
http://www.springerlink.com/content/r113807mv4l88478/PublisherUNSPECIFIED
Additional Information:© 2010 The Minerals, Metals & Materials Society and ASM International. Manuscript submitted December 16, 2009. Article published online May 29, 2010. Financial support for SP from the National Science Foundation (Grant No. DMI-0423304) and the Dowd- ICES Fellowship is gratefully acknowledged. Support for AA and ADR from the MRSEC at CMU (NSF Grant No. DMR-0520425) is gratefully acknowledged. Discussions with members of the MRSEC at CMU (NSF Grant No. DMR-0520425) are gratefully acknowledged.
Funders:
Funding AgencyGrant Number
NSFDMI-0423304
NSFDMR-0520425
Dowd-ICES Fellowship at Carnegie Mellon University (CMU)UNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20110322-092427732
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110322-092427732
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23039
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Mar 2011 21:29
Last Modified:03 Oct 2019 02:42

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