Analysis of Cracking Process in Conditions of High-Temperature Creep of Castings Form the Modified Superalloy IN-713C

Abstract:

mpact of complex modification and filtration during pouring into moulds on durability has been evaluated in this study in conditions of high-temperature creep of castings made from nickel superalloy IN-713C post production rejects. The conditions of initiation and propagation of cracks in the specimens were analysed with consideration of morphological properties of material macro-, micro-and substructure. It has been demonstrated that in conditions of high-temperature creep at temperature 980°C with stress σ =150 MPa creep resistance of the IN-713C superalloy increases significantly with the increase of macrograin size. Creep resistance of specimens made of coarse grain material was significantly higher than the resistance of fine grain material.

• Periodical: Solid State Phenomena (Volume 212)
• Pages: 247-254
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.212.247
• Online since: December 2013
• Authors: Marek Cieśla, Franciszek Binczyk, Marcin Mańka
• Keywords: Creep, Macrostructure, Mechanical Property, Modification, Nickel Superalloy

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