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Title: Optimisation of Carburising and Shot Peening, In Order To Improve Both Bending and Contact Fatigue Behaviour For Gear Applica
Author: C Peyrac, J Flavenot
Source: Conf Proc: ICSP-9 (pg 214-220)
Publication year 2005
Document number: 2005075
Number of pages: 7
Abstract:
ABSTRACT
Carburised steels are used extensively in the gear industry to improve the wear resistance of parts [1,2]. However, it is well known that shot peening, which creates
compressive residual stress, increases the fatigue strength of materials. Combining these two treatments should therefore improve both the bending and contact fatigue
strength [3,4,5].
This paper presents results obtained for bending fatigue and contact fatigue on a 17NiCrMo6-4 steel after carburising and shot peening. They demonstrate how it is possible
to obtain a 50% to 70% improvement in the fatigue strength (bending fatigue) without affecting the fatigue contact behaviour.
The resutls initially obtained on a test specimen are then confirmed by a test performed on gears that have received similar treatment.
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This page last revised: 04/24/2008