A Ternary Phase-Field Model Incorporating Commercial CALPHAD Software (Preprint)

reportActive / Technical Report | Accession Number: ADA501374 | Open PDF

Abstract:

A ternary phase-field model was developed that is linked directly to commercial CALPHAD software to provide quantitative thermodynamic driving forces. A recently available diffusion mobility database for ordered phases is also implemented to give a better description of the diffusion behavior in alloys. Because the targeted application of this model is the study of precipitation in Ni-based superalloys, a Ni-A1-Cr model alloy was constructed. A detailed description of this model is given in the paper.

Author(s):
Simmons, J. P. ; Wen, Y. H. ; Lill, J. V. ; Chen, S. L.
Author Organization(s):
AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH METALS AND CERAMICS DIV
Descriptive Note:
Journal article
Supplementary Note:
Submitted to Acta Materialia, Oct 2008. Prepared in collaboration with UES, Inc., Dayton, OH; High Performance Technologies, Inc., Wright-Patterson AFB, OH; and CompuTherm LLC, Madison, WI. The original document contains color images. All DTIC reproductions will be in black and white.
Pagination:
0028

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-2009-4033
Contract/Grant Number(s):
FA8650-04-D-5233, FA8650-04-D-5235
Task Number(s):
00
Project Number(s):
2311
Monitor Series:
AFRL-RX-WP
 Subject Terms
Joint Capability Areas:
JCA_3_Force Application; JCA_3.1.2_Maneuver to Insert; JCA_3.1_Maneuver; JCA_5_Command and Control; JCA_6_Net Centric; JCA_8_Building Partnerships
Modernization Areas:
Fully Networked C3
Communities of Interest:
C4I
Descriptor(s):
*SOFTWARE TOOLS, *NICKEL ALLOYS, *THERMODYNAMICS, *MICROSTRUCTURE, FREE ENERGY, CHROMIUM ALLOYS, TERNARY COMPOUNDS, CHEMICAL PRECIPITATION, ALUMINUM ALLOYS, MATHEMATICAL MODELS, DIFFUSION
Field(s)/Group(s):
Physical Chemistry, Metallurgy and Metallography
Keyword(s):
NI AL CR ALLOYS, TERNARY PHASE FIELD MODELS, COMMERCIAL CALPHAD SOFTWARE, UPHILL DIFFUSION, PHASE FIELD SIMULATIONS, DIFFUSION MOBILITY DATABASES, SUBLATTICES, CHEMICAL FREE ENERGY, PE62102F, WUAFRL23110002
Report Date:
2008 Oct 21
Creation Date:
2009 Jul 22