Table of Contents
Fatigue strength: CX steel (Sxx/STM)
This page presents the S-N curves and fatigue limit of CX steel samples that underwent shot-peening, heat treatment and machining that removed allowance of 0.5mm (in that order), obtained using the bending tests of rotating bars with AM layers parallel to the axis of rotation.
Production and prost-processing conditions
| Build orientation of longitudinal axis | horizontal |
|---|---|
| Position with respect to inert gas flow | undefined |
| Post-processing | shot-peening → heat treatment → machining allowance 0.5mm |
Experimental S-N curve
| Experimental method | ISO1143, rotating bending test R=-1 |  |
|---|---|---|
| Run-out criterion | 107 cycles | |
| AM layers | parallel to axis of rotation |
Wöhler curve
| Fatigue limit (MPa) | 503 |
|---|---|
| Stress amplitude S (MPa) | S=5005⋅N<html>-0,147</html> |
| Number of cycles to failure N | N=1,47⋅10<html>25</html>⋅S<html>-6,80</html> |
Explanation of the terms are given at the page Fatigue strength description.
This page is a part of the section DMLS/SLM: Fatigue design rules.