Friction stir processing (FSP) of cast metals: microstructure-property relationships in NiAl bronze and AA5083
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Authors
McNelley, T.R.
Swaminathan, S.
Menon, S.K.
Su, J.-Q.
Subjects
Friction stir processing
Multipass processing
Microstructure control
Temperature distribution
Strain distribution
Mechanical properties
Superplasticity
Multipass processing
Microstructure control
Temperature distribution
Strain distribution
Mechanical properties
Superplasticity
Advisors
Date of Issue
2010
Date
Publisher
TransTech Publications
Language
Abstract
Parameters for multi-pass FSP include the pattern of tool traverse and step-over distance between successive passes. Multi-pass FSP was conducted on as-cast NiAl bronze and as-cast AA5083 in order to modify stir zone (SZ) microstructures and mechanical properties. Highly refined and homogeneous SZ microstructures may be produced by FSP. Refined and equiaxed grain structures reflect recrystallization during FSP; mechanisms leading to homogenization by redistribution of microstructure constituents remain to be determined. Refined microstructures exhibit enhanced ambient-temperature properties and superplasticity at elevated temperatures.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.4028/www.scientific.net/MSF.638-642.35
Series/Report No
Department
Mechanical and Aeronautical Engineering (MAE)
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
6 p.
Citation
T.R. McNelley, S. Swaminathan, S.K. Menon, J.-Q. Su, "Friction stir processing (FSP) of cast metals: Microstructure-property relationships in NiAl bronze and AA5083," Materials Science Forum, (2010), v. 638-642, pp. 35-40.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.