Table of Contents
Fatigue strength: MS1 steel (VDx/TMS)
This page presents the S-N curves and fatigue limit of MS1 steel samples produced in the part of the production chamber near the outlet of the inert gas flow, then post-processed by heat treatment, machining that removed allowance of 0.5mm and shot-peening (in that order). The fatigue data were obtained using the bending tests of rotating bars with AM layers normal to the axis of rotation.
Production and prost-processing conditions
| Build orientation of longitudinal axis | vertical |
|---|---|
| Position with respect to inert gas flow | outlet |
| Post-processing | heat treatment → machining allowance 0.5mm → shot-peening |
Experimental S-N curve
| Experimental method | ISO1143, rotating bending test R=-1 |  |
|---|---|---|
| Run-out criterion | 107 cycles | |
| AM layers | normal to axis of rotation |
Wöhler curve
| Fatigue limit (MPa) | 569 |
|---|---|
| Number of cycles to failure N | N=3,63⋅10<html>51</html>⋅S<html>-16,13</html> |
| Stress amplitude S (MPa) | S=1573⋅N<html>-0,062</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.