Relation Between Striations Spacing and Fatigue Crack Growth Rates for Additive Manufactured Inconel 625

• Type: Article in International Scientific Journal
• Date: 2025

Authors

Fiorentin, FK (Author) Other; Dantas, R (Author) Other; Darabi, R (Author) Other; Lesiuk, G (Author) Other; Miguel Figueiredo (Author) FEUP; de Castro, PT (Author) Other; de Jesus, A (Author) Other

Journal

Title: Fatigue and Fracture of Engineering Materials and Structures

Vol. 48

Pages: 454-466

ISSN: 8756-758X

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-017-B0K

DOI: 10.1111/ffe.14493

Abstract (EN): The principles of the mechanisms for fatigue crack propagation in metals have been established several decades ago. By definition, fatigue might be summarized as a damage process imparted to a material under the action of cyclic loads. The relation between fatigue crack growth rates (FCGRs) and formation of striation marks has been a controversial topic. Some authors stated that, in certain fatigue regimes, several fatigue cycles are required to form a single striation. The disagreement found was the motivation for the present work. This study's main goal is to provide a comparison between the striation spacing and the respective FCGR. These analyses will be performed in a Nickel superalloy, Inconel 625, obtained via directed energy deposition. Investigation of the striations spacing are compared with data obtained from FCGR tests. A good agreement between striation spacing and FCGRs was found to intermediate and large values of stress intensity factor.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13