Influence of Carbides on Stress Rupture Property of a Ni-Base Superalloy

Abstract:

This study aims to explore the influence of morphology and distribution characteristic of carbides on stress rupture property at high temperature. The stress rupture life at 850°C/325MPa was tested. Meanwhile, microstructure and fracture morphology of stress rupture specimens were observed by scanning electron microscopy. The types of carbides were identified and the carbide size was also measured. The results show that the alloys with small size, uniformly distribution and moderate number of carbides present a high stress rupture performance.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 520-525
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.520
• Online since: March 2016
• Authors: Zhen Rui Li, Ning An
• Keywords: Carbide, Nickel-Based Superalloys, Stress Rupture Property, σ Phase

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