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Title: Effects of Shot Peening and Roller-Burnishing on Fatigue Performance of Various Titanium Alloys
Author: A Drechsler, J Kiese, L Wagner
Source: Conf Proc: ICSP-7 (pg 145-152)
Publication year 1999
Document number: 1999024
Number of pages: 8
Abstract:
Shot peening and roller-burnishing were performed on various titanium alloys belonging to the a-,(a+ß)- and ß-alloy classes. For both treatments, the main process
parameters, i.e., Almen intensity and rolling force were varied to a wide extent and the process-induced changes in surface layer properties, e.g., surface topography and
hardness profiles were evaluated. The fatigue performance of the a-, (a+ß)- and ß- titanium alloys can be significantly improved by both shot peening and
roller-burnishing. However, most marked improvements were found on a-alloys followed by (a+ß)- and ß-alloys. The different response of the various alloy classes to
mechanical surface treatments is interpreted in terms of the cyclic deformation behavior affecting the cyclic stability of the process-induced residual compressive stresses.
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