Fine-grain titanium 6AI-4V for superplastic forming and diffusion bonding of aerospace products

Autor:	Larry D. Hefti
Rok vydání:	2010
Předmět:	Materials science Diffusion Metallurgy Alloy General Engineering chemistry.chemical_element Titanium alloy Superplasticity engineering.material Grain size chemistry engineering General Materials Science Alpha case Diffusion bonding Titanium
Zdroj:	JOM. 62:42-45
ISSN:	1543-1851 1047-4838
DOI:	10.1007/s11837-010-0076-9
Popis:	Superplastic forming (SPF) of titanium 6Al-4V, with a standard grain size of about 8 μm, is typically performed between 900° and 920°C. Verknaya Salda Metallurgical Production Association in Russia has developed a fine-grain version of the 6–4 alloy, with a grain size of about 1 μm, which can be superplastically formed at around 775° C. Since this material diffusion bonds to itself as well as other standard grain size titanium alloys at this temperature, super-plastically formed and diffusion bonded (SPF/DB) hardware can be produced. There are several advantages to using this lower forming temperature, including a smaller amount of alpha case developed on parts, longer press platen and heater life, and less oxidation of the tool surface. This fine-grained 6–4 material is currently being used in the production of SPF and SPF/DB aerospace components due to these advantages.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4d93aaca14a38e5defff4506fe058f8c https://doi.org/10.1007/s11837-010-0076-9 Zobrazit plný text záznamu Full text from SpringerLink