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Title: Near Surface Microstructures in Mechanically Surface Treated Materials and Their Consequences on Cyclic Deformation Behaviour
Author: I Altenberger, U Martin, B Scholtes, H Oettel
Source: Conf Proc: ICSP-7 (pg 79-87)
Publication year 1999
Document number: 1999018
Number of pages: 9
Abstract:
Modern mechanical surface optimization has come into a stage way beyond mere empirical concepts. Especially surface characterization methods have significantly contributed
to a more thorough understanding of fatigue mechanisms. Using some important model materials, in this paper a survey of tpical surface finishing induced microstructures is
given.
A combination of mechanical, electron microscopical and X-ray methods currently has proved to be most effective to provide information about near surface properties, if
'tailored' surfaces are to be aspired at. Special focus is put on the stability of near surface microstructures during cyclic loading and its conseuence on cyclic
softening/hardening behavior as well as crack initiation and propogation. Finally, it is demonstrated that with appropriate heat treatments after shot peening further
surface optimization can be achieved.
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