Failure analysis of compressor impeller blade made of 17-4PH stainless steel

doi:10.13251/j.issn.0254-6051.2021.11.046

Abstract

Abstract: Blades on the impeller of some kind of nitrogen compressor failed in early stage of service life. The chemical composition, metallographic structure, mechanical properties, macroscopic and microscopic fracture morphologies of the blades were analyzed for the failure causes. The results show that the impeller blade material is 17-4PH stainless steel and there are obvious fatigue characteristics on the blade fracture, indicating that the fracture is a fatigue fracture. The chemical composition, microstructure and properties of the blade material meet the standard requirements. The main cause of fracture is vibration of the blades.

Key words: compressor impeller blade, failure analysis, 17-4PH stainless steel, fatigue fracture

CLC Number:

TG161

Kang Zhenwei, Zhou Genshu, Liu Lijun, Zhang Xiaoke, Wang Mengjie. Failure analysis of compressor impeller blade made of 17-4PH stainless steel[J]. Heat Treatment of Metals, 2021, 46(11): 254-257.

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Failure analysis of compressor impeller blade made of 17-4PH stainless steel

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