Modeling Grain Boundary Mobility During Dynamic Recrystallization of Metallic Alloys (Preprint)

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Abstract:

A simple analytical model is proposed for estimating grain boundary mobility during dynamic recrystallization in metallic alloys. The combined effects of solutes solute drag and second phase particles Zener pinning on mobility are considered. The approach is based on and is consistent with a recently published mesoscale model of discontinuous dynamic recrystallization. The dependence of grain boundary mobility on solute concentration and particle size is summarized in the form of two-dimensional maps.

Author(s):
Semiatin, S. L. ; Montheillet, F. ; Damamme, G. ; Piot, D.
Author Organization(s):
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
Descriptive Note:
Conference paper preprint
Supplementary Note:
To be sumitted for presentation at the Thermec (2009) Conference to be held in Berlin, Germany on 25-29 August 2009. In-house contract.
Pagination:
0008

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFRL-RX-WP-TP-2009-4118
Task Number(s):
RG
Project Number(s):
4347
Monitor Series:
AFRL-RX-WP
 Subject Terms
Joint Capability Areas:
JCA_3_Force Application; JCA_3.1.1_Maneuver to Engage; JCA_3.1_Maneuver; JCA_5_Command and Control; JCA_8_Building Partnerships
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*GRAIN BOUNDARIES, *RECRYSTALLIZATION, *MATHEMATICAL MODELS, *DYNAMICS, *MOBILITY, *METALLOID ALLOYS, MAPPING(TRANSFORMATIONS), DRAG, CONCENTRATION(COMPOSITION), TWO DIMENSIONAL, PARTICLE SIZE, SOLUTES
Field(s)/Group(s):
Properties of Metals and Alloys, Test Facilities, Equipment and Methods, Crystallography
Keyword(s):
*BOUNDARY MOBILITY, *ZENER PINNING, *DISCONTINUOUS DYNAMIC RECRYSTALLIZATION, MESOSCALE, ANALYTICAL MODELS, SOLUTE DRAG, PE62102F, WUAFRLM02R2000, WUAFRL4347RG00
Report Date:
2009 Apr 01
Creation Date:
2009 Aug 05