Table of Contents
Fatigue strength: MS1 steel (VMx/TMS)
This page presents the S-N curves and fatigue limit of MS1 steel samples produced in the middle of the production chamber with respect to 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 bar 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 | middle |
| 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) | 538 |
|---|---|
| Number of cycles to failure N | N=8,68⋅10<html>56</html>⋅S<html>-18,18</html> |
| Stress amplitude S (MPa) | S=1354⋅N<html>-0,055</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.