Phase Segregation Susceptibility of ZA27 Alloy at Different Shear Rates

Abstract:

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Back extrusion technique was employed to characterize phase segregation tendency of mechanically stirred ZA27 alloy at different deformation rates. Variation of segregation intensity with ram diameter was found to follow opposite trends at low and high ram speeds. At sufficiently high ram speeds, small rams are of better performance in minimizing segregation whereas at low ram speeds, large rams result in less pronounced segregation. In addition, increasing ram speed invariably decreases segregation degree. Back extrusion at very high shear rates provided via a Drop Extruder Apparatus capable of displacing ram at speeds in excess of 1m/s results in production of very homogeneous products in terms of solid fraction as well as size distribution of globules.

Info:

Periodical:

Solid State Phenomena (Volumes 116-117)

Edited by:

C.G. Kang, S.K. Kim and S.Y. Lee

Pages:

225-230

DOI:

10.4028/www.scientific.net/SSP.116-117.225

Citation:

J. Mola et al., "Phase Segregation Susceptibility of ZA27 Alloy at Different Shear Rates", Solid State Phenomena, Vols. 116-117, pp. 225-230, 2006

Online since:

October 2006

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Price:

$35.00

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