Process Design for Superalloys Sheet Rotary Forming

Abstract:

Inconel 625 is a nickel superalloy, characterized by high fatigue strength. The alloy is resistant to a wide range of corrosive environments, including high-temperature oxidation. For this reason, it is an attractive material for the chemical, shipbuilding and aviation industries. Inconel 625 alloy is designed for plastic working. However, the significant difficulty is the appropriate process design, due to the high deformation resistance. In order to improve the plastic properties of the alloy, processing at elevated temperatures is practiced. In this work, attempts were made to implement rotary forming process of Inconel 625 superalloy. For this purpose, an experiment was designed, investigating the impact of three variables on the process – feed rate, spinning rate and heating. For the tests were used Inconel 625 metal plates in the shape of discs. Axial-symmetrical products were formed, using a spinning machine. The geometry of the products according to selected quality factors was investigated. Optimal process parameters were chosen using multivariate statistical optimization. These parameters will be used to set up processes to obtain product that meets quality requirements.

• Periodical: Materials Science Forum (Volume 985)
• Pages: 91-96
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.985.91
• Online since: April 2020
• Authors: Krzysztof Zaba*, Sandra Puchlerska, Tomasz Pieja, Jaroslaw Pyzik
• Keywords: 3D Scanning, Rotary Forming, Statistical Optimization, Superalloys

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