PSI - Issue 48

Mirza Manjgo et al. / Procedia Structural Integrity 48 (2023) 161–168 Manjgo et al / Structural Integrity Procedia 00 (2023) 000 – 000

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Table 3. Results of tensile tests

Specimen

R p0.2 [MPa]

R m [MPa]

σ f [MPa]

ε [%] 3,83 3,85 3,84

Z [%]

1-500 2-500

1395 1479 1437

1610 1615

1285 1183 1234

44,83 43,74 44,28

Average

1612,5

3.2. Hardness measurements The hardness was measured according to the EN ISO 6507-1 standard [8]. The Vickers HV 10 method was used. The measurement was performed on the device Zwick 3202 (Figure 2) with a load of 98.07 N. The measured hardness values at 10 different places are shown in Table 4. The obtained results were converted to Brinell according to ISO 18625 [9], for the standard that the material should meet.

Figure 2. Measurement device Zwick 3202 for The Vickers HV 10 method

Table 4. Results of hardness measurements Measurements

HV10

HB from HV

1 2 3 4 5 6 7 8 9

536 541 572 559 541 536 536 536 553 536 544

486 486 513 504 486 486 486 486 504 486 492

10

Average

3.3. Charpy impact tests The impact test was performed according to the ISO 148-1 standard [10], at room temperature on an instrumented Charpy device Amsler RPK300. With this test, we obtained the impact toughness of the material, the total energy, and the energy for crack propagation and initiation. Figure 3 shows the geometry of the standard ISO-V Charpy specimen, and the test results are given in diagrams in Figure 4 and Figure 5, and in Table 5.