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Title: Influence of Stres Gradient on Fatigue Behavior on Shot Peened Timetal 1100
Author: T. Dorr, L. Wagner
Source: Conf Proc: ICSP-6, (p.223-232)
Publication year 1996
Document number: 1996069
Number of pages: 10
Abstract:
Fully lamellar as well as duplex (primary alpha phase in lamellar matrix) microstructures optimized for a good combination of LCF, HCF and creep strengths were produced in
the high temperature near-a titanium alloy TIMETAL 1100. Shot peening was performed using various Almen intensities to evaluate optimum conditions for fatigue life
improvements os smooth and notched components. The fatigue results are explained in terms of the resistance to cack nucleation and microcrack growth as affected by the shot
peening induced changes in near surface properties and the actual applied stress gradient.
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