Working Paper Article Version 2 This version is not peer-reviewed

On the Influence of Control Type and Strain Rate on the Lifetime of 50CrMo4

Version 1 : Received: 6 October 2020 / Approved: 7 October 2020 / Online: 7 October 2020 (10:12:45 CEST)
Version 2 : Received: 21 October 2020 / Approved: 21 October 2020 / Online: 21 October 2020 (15:18:48 CEST)

A peer-reviewed article of this Preprint also exists.

Geilen, M.B.; Schönherr, J.A.; Klein, M.; Leininger, D.S.; Giertler, A.; Krupp, U.; Oechsner, M. On the Influence of Control Type and Strain Rate on the Lifetime of 50CrMo4. Metals 2020, 10, 1458. Geilen, M.B.; Schönherr, J.A.; Klein, M.; Leininger, D.S.; Giertler, A.; Krupp, U.; Oechsner, M. On the Influence of Control Type and Strain Rate on the Lifetime of 50CrMo4. Metals 2020, 10, 1458.

Journal reference: Metals 2020, 10, 1458
DOI: 10.3390/met10111458

Abstract

In this study, we investigate the influence of control type and strain rate on the lifetime of specimens manufactured from 50CrMo4. This influence is described by a strain rate dependent method that uses cyclic stress strain curves to correct displacement controlled cyclic test results. The objective of this correction is to eliminate the stress related differences between displacement controlled cyclic test results and force controlled cyclic test results. The method is applied to the results of ultrasonic fatigue tests of six different combinations of heat treatment, specimen geometry (notch factor) and atmosphere. The corrected results show an improved agreement with test results obtained on conventional fatigue testing equipment with similar specimens: the standard deviation in combined data sets is significantly reduced (p=4.1%). We discuss the literature on intrinsic and extrinsic strain rate effects in carbon steels.

Subject Areas

ultrasonic cyclic testing; frequency effect; strain rate effect; 50CrMo4; SAE 4150; High Cycle Fatigue; Very High Cycle Fatigue

Comments (1)

Comment 1
Received: 21 October 2020
Commenter: Max Benedikt Geilen
Commenter's Conflict of Interests: Author
Comment: Several minor changes according to peer review, mainly more elaboration on experimental procedure, including figures with geometries of specimens.
+ Respond to this comment

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 1
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.