Issue 46

I. Čamagić et alii, Frattura ed Integrità Strutturale, 46 (2018) 371-382; DOI: 10.3221/IGF-ESIS.46.34

Testing temperature.  C

Specimen designation PM-1-1N PM-1-2N PM-1-3N PM-2-1N PM-2-2N PM-2-3N

Yield stress. Rp0.2. MPa

Tensile stress. Rm. MPa

Elongation. A. %

342 339 335 251 242 247

513 505 498 323 316 320

27.5 28.3 28.6 29.1 30.8 30.4

20

540

Table 6 : Results of tensile testing of new PM specimens.

600

600

PM-2-1N 540 o C

PM-1-1N 20 o C

500

500

400

400

300

300

200

200

Stress, R, MPa

Stress, R, MPa

100

100

0

0

0

5

10

15

20

25

30

0

5

10

15

20

25

30

Elongation, A, % Elongation, A, % Figure 4 : Stress-elongation diagram of a new PM specimen PM-1-1N (left) and new specimen PM-2-1N (right).

Testing results of WM specimens tested at room temperature of 20  C and working temperature of 540  C are given in Tab. 7, [1]. Typical tensile stress-elongation curve for WM specimen marked as WM-1-1, tested at room temperature is shown in Fig.5, left [1], and for specimen marked as WM-2-1, tested at working temperature is shown in Fig. 5, right [1].

Testing temperature,  C

Specimen designation

Yield stress, R p0.2 , MPa

Tensile strength, R m , MPa

Elongation, A, %

WM-1-1 WM-1-2 WM-1-3 WM-2-1 WM-2-2 WM-2-3

518 510 514 331 319 325

611 597 605 419 406 412

20.9 22.7 21.3 26.1 27.3 27.7

20

540

Table 7 : Results of tensile testing of WM specimens.

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