PSI - Issue 66

Vladimír Chmelko et al. / Procedia Structural Integrity 66 (2024) 426–432 Author name / Structural Integrity Procedia 00 (2025) 000–000

428

3

EOS standard

9 ‐ 11

0.2 ‐ 0.45  0.05

0 ‐ 0.15

0 ‐ 0.45

0 ‐ 0.1

0 ‐ 0.1

‐

Ni (%)

Co (%)

Mo (%)

Ti (%)

Al (%)

Cr (%)  0.5

Cu (%)  0.5

C (%)

MS1

EOS standard

17 ‐ 19

8.5 ‐ 9.5 4.5 ‐ 5.2 0.6 ‐ 0.8 0.05 ‐ 0.15

 0.03

Cr (%)

Ni (%)

Mo (%)

C (%)

Cu (%)  0.5 0.04

N (%)  0.1

Si (%)

Mn (%)

316L

EOS standard spectrometry

17 ‐ 19 17.41

13 ‐ 15 2.25 ‐ 3.2  0.03

‐

‐

13.62

3.12

0.14

0.2

0.35

1.4

The print parameters have been set according to the EOS standard for these materials. The shape of the test specimens (Fig. 1) was chosen with regard to the capabilities of the MTS 370.02 pulsator used (max. force 25 kN, max. torque 250 Nm).

Fig. 1. Shape of the test specimens for cyclic torsion (left) and for alternating tension-pressure (right) Specimens of these materials were subjected to cyclic tension-compression and alternating torsion tests. The materials considered and tested represent three distinct groups of materials: light alloys (AlSi10Mg) medium strength structural steels (316L) and high strength steels (MS1) Specimens of all three materials were subjected to cyclic tests in controlled force and controlled torque modes respectively in the load frame of the MTS 370.02 pulsator. For the material AlSi10Mg and 316L, specimens were available pushed in two different directions. Samples of all three materials were tested in as-built condition.

3. Results As a result of the cyclic tests, the following curves were obtained: AlSi10Mg printed horizontal  a=f(Nf) printed vertical  a=f(Nf),  a=f(Nf) MS1 printed horizontal  a=f(Nf) printed vertical  a=f(Nf),  a=f(Nf) 316L printed vertical  a=f(Nf),  a=f(Nf)