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Isothermal Fatigue Behavior and Residual Stress States of Mechanically Surface Treated Ti-6Al-4V: Laser Shock Peening vs. Deep Rolling

  • In this paper, the high-temperature fatigue behavior and residual stress states of a Ti-6Al-4V alloy are investigated after mechanical surface treatment. In particular, the two surface treatments investigated, laser shock peening and deep rolling, were observed to result in significantly different residual stress states. The consequent isothermal fatigue behavior at elevated temperatures, characterized using cyclic deformation curves, are discussed in terms of the stability of the near-surface work hardening and compressive residual stresses. Despite pronounced relaxation of the residual stresses, both laser shock peening and deep rolling led to a significant improvement in the cyclic deformation behavior and, hence, increased fatigue lifetimes at elevated temperatures as compared to untreated materials states.

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Metadaten
Author:Ulf Noster, Igor Altenberger, Robert O. Ritchie, Berthold Scholtes
DOI:https://doi.org/10.1002/3527606580.ch57
ISBN:9783527606580
Parent Title (English):Shot peening
Publisher:Wiley-VCH
Place of publication:Weinheim; [Cambridge]
Editor:Lothar Wagner
Document Type:Part of a Book
Language:English
Year of first Publication:2003
Release Date:2023/07/25
First Page:447
Last Page:453
Institutes:Fakultät Maschinenbau
Technologie-Campus Parsberg-Lupburg
Fakultät Maschinenbau / Labor Werkstoffrandschichtanalytik
Publication:Externe Publikationen
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG