StressLife: A Short-Time Approach for the Determination of a Trend S-N Curve in and beyond the HCF Regime for the Steels 20MnMoNi5-5 and SAE 1045-Reference-Cited by-同舟云学术

StressLife: A Short-Time Approach for the Determination of a Trend S-N Curve in and beyond the HCF Regime for the Steels 20MnMoNi5-5 and SAE 1045

Published:2023-05-23 Issue:11 Volume:16 Page:3914
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Weber Fabian¹²^ORCID,Koziol Janina¹^ORCID,Starke Peter¹²^ORCID

Affiliation:

1. Department of Materials Sciences and Materials Testing (WWHK), Institude QM³, University of Applied Sciences, Schoenstraße 11, 67659 Kaiserslautern, Germany

2. Faculty of Natural Sciences and Technology, Saarland University, 66123 Saarbrücken, Germany

Abstract

Within the scope of this research, a new short-time procedure designated as StressLifeHCF was developed. Through a combination of classic fatigue testing and non-destructive monitoring of the material response due to cyclic loading, a process-oriented fatigue life determination can be carried out. A total of two load increases and two constant amplitude tests are required for this procedure. By using data from non-destructive measurements, the parameters of the elastic approach according to Basquin and the plastic approach according to Manson–Coffin were determined and combined within the StressLifeHCF calculation. Furthermore, two additional variations of the StressLifeHCF method were developed in order to be able to accurately describe the S-N curve over a wider range. The main focus of this research was 20MnMoNi5-5 steel, which is a ferritic-bainitic steel (1.6310). This steel is widely used for spraylines in German nuclear power plants. In order to validate the findings, tests were also performed on an SAE 1045 steel (1.1191).

Funder

Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection

Publisher

MDPI AG

Subject

General Materials Science

Link

https://www.mdpi.com/1996-1944/16/11/3914/pdf

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