TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Geilen, Max Benedikt
A1  - Schönherr, Josef Arthur
A1  - Klein, Marcus
A1  - Leininger, Dominik Sebastian
A1  - Giertler, Alexander
A1  - Krupp, Ulrich
A1  - Oechsner, Matthias
T1  - On the Influence of Control Type and Strain Rate on the Lifetime of 50CrMo4
JF  - Metals
N2  - 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. In a statistical analysis, 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.
Y1  - 2020
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:959-opus-68215
SN  - 2075-4701
SS  - 2075-4701
U6  - https://doi.org/10.3390/met10111458
DO  - https://doi.org/10.3390/met10111458
VL  - 10
IS  - 11
PB  - MDPI AG
ER  -