Paper Title:
Tensile and Fatigue Properties of Friction Stir Processed NiAl Bronze
  Abstract

Friction stir processing (FSP) produced local microstructural refinement in cast Ni Al Bronze. The refined microstructure quality was evaluated with mechanical property characterization using monotonic tension and fatigue testing as a function of FSP raster patterns. Modifying the cast NiAl bronze with FSP resulted in a 140 - 172 % increase in yield strength, and a 40 - 57% increase in tensile strength. Changing the raster pattern from a linear to a rectangular spiral raster increased the tensile elongations by 40 - 134%. This increase in elongation was attributed to increased microstructural uniformity through the depth of the FSP raster. The ability to transfer FSP technology was demonstrated with consistent tensile property data produced by three different laboratories. Fatigue characterization (both uniaxial and rotating-bending fatigue) showed that FSP improved the cast NiAl bronze fatigue resistance. Both types of fatigue testing showed differences in fatigue resistance as a function of processing parameters.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
3751-3756
DOI
10.4028/www.scientific.net/MSF.539-543.3751
Citation
C. B. Fuller, M. W. Mahoney, W. H. Bingel, M. Calabrese, B. London, "Tensile and Fatigue Properties of Friction Stir Processed NiAl Bronze", Materials Science Forum, Vols. 539-543, pp. 3751-3756, 2007
Online since
March 2007
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Price
$32.00
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