Friction Stir Processing (FSP) of Cast Metals: Microstructure – Property Relationships in NiAl Bronze and AA5083 |
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| Journal | Materials Science Forum (Volumes 638 - 642) |
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| Volume | THERMEC 2009 |
| Edited by | T.Chandra, N.Wanderka, W.Reimers , M.Ionescu |
| Pages | 35-40 |
| DOI | 10.4028/www.scientific.net/MSF.638-642.35 |
| Citation | Terry R. McNelley et al., 2010, Materials Science Forum, 638-642, 35 |
| Online since | January, 2010 |
| Authors | Terry R. McNelley, Srinivasan Swaminathan, E. Sarath Menon, J.Q. Su |
| Keywords | Friction Stir Processing (FSP), Mechanical Properties, Microstructure Control, Multi-Pass Processing, Strain Distribution, Superplasticity, Temperature Distribution |
| 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. |
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