Fabrication of cylindrical shells from welded sheet billets via superplastic forming

Autor:	T. M. Zagirov, A. A. Kruglov, F. U. Enikeev
Rok vydání:	2011
Předmět:	Fabrication Materials science Metallurgy Metals and Alloys Titanium alloy Superplasticity Welding Plasticity Diffusion welding Surfaces Coatings and Films law.invention Matrix (mathematics) Mechanics of Materials law Forming gas
Zdroj:	Russian Journal of Non-Ferrous Metals. 52:175-179
ISSN:	1934-970X 1067-8212
DOI:	10.3103/s1067821211020131
Popis:	Two alternative production flowcharts for the fabrication of cylindrical shells from titanium alloys in the superplasticity (SP) state, namely, the formation of the sheet into a rectangular matrix and the free formation of a package consisting of two sheets welded along a rectangular contour by diffusion welding, are considered. It is stated by comparative analysis that, for the free formation of the package of sheet billets, the damage parameter and process duration are smaller by a factor of almost 3 when compared with a standard flowchart for the formation into a rectangular matrix, while the characteristic pressures of the forming gas remain approximately the same. It is concluded that it is possible to use the free formation of rectangular packages when fabricating cylindrical articles from materials with low plasticity characteristics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fcb79d14122bb39b135e7badd6fd3e84 https://doi.org/10.3103/s1067821211020131 Zobrazit plný text záznamu Full text from SpringerLink