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Title: Effect of Deep Rolling at Elevated and Low Temperatures on the Isothermal Fatigue Behavior of AISI 304
Author: I Nikitin, I Altenberger, B Scholtes
Source: Conf Proc: ICSP-9 (pg 185-190)
Publication year 2005
Document number: 2005070
Number of pages: 6
Abstract:
ABSTRACT
This paper proposes a new method of surface optimisation to enhance the fatigue behaviour of AISI 304 stainless steel at ambient and elevated temperatures. High temperature
deep rolling is a combination of classical methods for surface enhancement namely mechanical and thermal treatments. Mechanical surface treatments have been investigated
thoroughly and can significantly improve the fatigue behaviour of steels. For AISI 304 stainless steel, which is used among others in nuclear power plants, deep rolling
enhances the fatigue behaviour at room temperature as well as at elevated temperatures over a wide temperature range. Annealing after mechanical treatments can also improve
the fatigue behaviour of many steels and has been studied already. However the combination of these two factors namely thermal and mechanical tereatment is rarely
investigated. For this purpose a classical and a novel surface treatment method are compared to each other in terms of their impact on fatigue behaviour. The treatments
induce distinctly different near-surface microstructures with different mechanical and thermal stability. The aim of this paper is to clarify the role of the different
near-surface microstructures on the fatigue behaviour of stainless steel AISI 304.
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This page last revised: 04/24/2008