Fatigue strength of Ti-6Al-4V alloy

• Published in: Metalurgija Vol. 45; no. 3; p. 198
• Main Authors: Ivasishin, O M, Gerasimchuk, O N, Gryaznov, B A
• Format: Journal Article
• Language: English
• Published: 01-07-2006
• ISSN: 0543-5846

We have studied fatigue characteristics of Ti-6Al-4V alloy synthethized by the simplest powder metallurgy technology including processes of pressing and pressure sintering of powder mixtures based on titanium hydride. The powder material has relatively fine grains of beta-phase which, despite availability of residual voids, provide quite high endurance limit (500 MPa) comparable with that of the respective cast alloy. Sites of crack initiation in powder alloy are such stress raisers as the largest voids emanating to the surface of specimen work portion. Application of the given P/M technology makes it possible to ensure cost-effective production of titanium alloys and products with satisfactory static and dynamic mechanical characteristics, which are suitable for their practical application.