Fatigue crack propagation resistance of beta-annealed Ti-6AI-4V alloys of differing interstitial oxygen contents

Autor:	T. W. Crooker, G. R. Yoder, L.A. Cooley
Rok vydání:	1978
Předmět:	Materials science Metallurgy Metals and Alloys Titanium alloy chemistry.chemical_element Fracture mechanics Paris' law Condensed Matter Physics Microstructure Critical value Oxygen Grain size Crack closure chemistry Mechanics of Materials
Zdroj:	Metallurgical Transactions A. 9:1413-1420
ISSN:	2379-0180 0360-2133
DOI:	10.1007/bf02661812
Popis:	Fatigue crack growth rates have been determined for beta-annealed Ti-6Al-4V alloys with respective oxygen contents of 0.06, 0.11, 0.18 and 0.20 wt pct. For each of these alloys, transitional crack growth behavior has been observed which appears to correlate with a critical value of the reversed plastic zone size,viz the Widmanstatten packet size. Moreover, growth rates below transitional levels order in terms of packet size, with lower growth rates associated with larger packets. The present results suggest that intersti-tial oxygen content and prior beta grain size significantly affect fatigue crack growth rates through control of the Widmanstatten packet size.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dfc9fd8e0ea59a4282bbaac463ff4783 https://doi.org/10.1007/bf02661812 Zobrazit plný text záznamu