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Title: The Relation Between Shot Peening Conditions And Fatigue Strength Of Carburized Gears
Author: Matsumoto, Suzuki, Okada
Source: Conf Proc: ICSP-4, (p.455-464)
Publication year 1990
Document number: 1990090
Number of pages: 9
Abstract:
The relation between shot peening conditions and fatigue strength of carburized gears was investigated. The fatigue strength of the gears closely corelated to arc height
value and integral value of residual stress in the direction of depth. The total kinetic energy of shot is represented by arc height value. The kinetic energy makes
retained austenite to change into martensite and produces compressive stress field. For that reason fatigue cracks are considered to be prevented from not only initiating
but also propagating by the compressive stress. These results indicates that shot peening of higher arc height is more effective to improve fatigue properties of the
carburized gears.
Descriptors: Arc height; Residual stress; Carburizing; Gear; Fatigue; Crack; Retained austenite
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