Title: Technical Note: Production methods for nickel-based superalloys with improved deformability

Authors: A.G. Shalimov, Y.E. Vasiliev, Y.Y. Reznik, L.P. Sopov, V.I. Eriomenko, O.N. Vlasova, G.M. Rakovshik

Addresses: Central Research Institute of the Iron and Steel Industry, 9/23 2nd Baumanskaja, 107005 Moscow, USSR. ' Central Research Institute of the Iron and Steel Industry, 9/23 2nd Baumanskaja, 107005 Moscow, USSR. ' Central Research Institute of the Iron and Steel Industry, 9/23 2nd Baumanskaja, 107005 Moscow, USSR. ' Central Research Institute of the Iron and Steel Industry, 9/23 2nd Baumanskaja, 107005 Moscow, USSR. ' Central Research Institute of the Iron and Steel Industry, 9/23 2nd Baumanskaja, 107005 Moscow, USSR. ' Central Research Institute of the Iron and Steel Industry, 9/23 2nd Baumanskaja, 107005 Moscow, USSR. ' Central Research Institute of the Iron and Steel Industry, 9/23 2nd Baumanskaja, 107005 Moscow, USSR

Abstract: At present, superalloy ingots, which can be subjected to deformation, can be produced by the following remelting processes: vacuum arc remelting with forced helium cooling of ingot (VAR), electroslag remelting (ESR), vacuum arc double electrode remelting (VADER). Such processes as electron-beam remelting and plasma-arc remelting also have prospects. This paper compared the quality of nickel-base superalloy operating at 750°C, produced by different methods, i.e. VAR, ESR, ESR + VADER. Investigations of ingot structure showed the presence of microporosity linked with formation of excess phases of eutectic origin, carbides and borides.

Keywords: nickel based superalloys; deformability; superalloy ingots; vacuum arc remelting; VAR; electroslag remelting; ESR; vacuum arc double electrode remelting; VADER; ingot structure; microporosity; carbides; borides.

DOI: 10.1504/IJMPT.1992.036572

International Journal of Materials and Product Technology, 1992 Vol.7 No.3, pp.295 - 299

Published online: 04 Nov 2010 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article