Issue 46

I. Čamagić et alii, Frattura ed Integrità Strutturale, 46 (2018) 371-382; DOI: 10.3221/IGF-ESIS.46.34 375 Specimen designation Testing temperature.  C Yield stress. Rp0.2. MPa Tensile stress. Rm. MPa Elongation. A. % PM-1-1N 20 342 513 27.5 PM-1-2N 339 505 28.3 PM-1-3N 335 498 28.6 PM-2-1N 540 251 323 29.1 PM-2-2N 242 316 30.8 PM-2-3N 247 320 30.4 Table 6 : Results of tensile testing of new PM specimens. 0 5 10 15 20 25 30 0 100 200 300 400 500 600 PM-1-1N 20 o C Stress, R, MPa Elongation, A, % 0 5 10 15 20 25 30 0 100 200 300 400 500 600 PM-2-1N 540 o C Stress, R, MPa 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]. Specimen designation Testing temperature,  C Yield stress, R p0.2 , MPa Tensile strength, R m , MPa Elongation, A, % WM-1-1 20 518 611 20.9 WM-1-2 510 597 22.7 WM-1-3 514 605 21.3 WM-2-1 540 331 419 26.1 WM-2-2 319 406 27.3 WM-2-3 325 412 27.7 Table 7 : Results of tensile testing of WM specimens.