The low cycle fatigue property, damage mechanism, and life prediction of additively manufactured Inconel 625: Influence of temperature-Reference-Cited by-同舟云学术

The low cycle fatigue property, damage mechanism, and life prediction of additively manufactured Inconel 625: Influence of temperature

Published:2023-07-25 Issue:10 Volume:46 Page:3829-3845
ISSN:8756-758X
Container-title:Fatigue & Fracture of Engineering Materials & Structures
language:en
Short-container-title:Fatigue Fract Eng Mat Struct

Author:

Liu Meng¹²³,Cai Yifang¹²,Wang Quanyi¹²,Jiang Yunqing¹²,Zou Tongfei¹²,Wang Yunru¹²,Li Qingsong³,Pei Yubing³,Zhang Hong¹²³,Liu Yongjie¹²,Wang Qingyuan¹²⁴^ORCID

Affiliation:

1. Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment Sichuan University Chengdu China

2. Key Laboratory of Deep Underground Science and Engineering, Ministry of Education Sichuan University Chengdu China

3. State Key Laboratory of Long‐Life High Temperature Materials, Dongfang Turbine Co., Ltd Deyang China

4. School of Architecture and Civil Engineering Chengdu University Chengdu China

Abstract

AbstractSymmetrical high‐temperature low‐cycle fatigue tests were performed in this study to examine the influence of temperature on the fatigue failure mechanism of the additively manufactured Inconel 625. According to the fracture analysis, cracks initiate from the crystallographic plane at room temperature. At 600°C, oxidation of carbides leads to crack initiation. The strengthening effect of γ″ precipitation prevents crack propagating within the matrix. At 750°C, the crack becomes transgranular propagating, as a consequence of γ″‐δ transformation. Geometrically necessary dislocations distribution on the fracture supports this result. Furthermore, a modified life prediction formula considering effect of temperature and strain amplitude was established. It was observed that the modified model predicted the fatigue life of the studied materials well in both test conditions.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Sichuan Province

State Key Laboratory of Long-life High Temperature Materials

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1111/ffe.14106

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