PSI - Issue 7

R.D. Xu et al. / Procedia Structural Integrity 7 (2017) 84–91 R. D. Xu, et al. / Structural Integrity Procedia 00 (2017) 000–000

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3. Result and discussion 3.1. Monotonic deformation behavior

The results of the tensile tests, including ultimate tensile stress (UTS) and yield stress, of SLM K536 X orientation and Z-orientation specimens at room and elevated temperatures are shown in Fig. 3, in contrast with the data of wrought K536 alloy from the reference [11]. Monotonic tensile properties, including modulus of elasticity, E , yield stress, 0 . 2 , and Ultimate Tensile Stress, b , are listed in Table 1.

(b)

(a)

0 100 200 300 400 500 600 700 800 900 200 300 400 500 600 700 800 900 Ultimate Tensile Stress(MPa) Temperature (degree Celsius) x-orietation z-orietation K536 wrought

350

300

250

x-orietation z-orietation K536 wrought

200

0 100 200 300 400 500 600 700 800 900 150 Yield strength (Mpa)

Temperature (degree Celsius)

Fig. 3 Line graphs of UTS (a) and yield stress (b) of SLM K536 X -orientation and Z-orientation specimens, wrought K536 specimens at room and elevated temperatures

Table 1 Monotonic tensile properties of the SLM K536 X-orietation and Z-orietation specimens, wrought K536 specimens Temperatures Tensile properties X-Orientation Z-Orientation wrought K536 20 º C E (GPa) 193 189 186 . (MPa) 338 325 335 (MPa) 800 775 765 EL (%) 36.9 41.3 47 400 º C E (GPa) 144 129 149 . (MPa) 250 243 235 (MPa) 683 667 665 EL (%) 40.7 45.2 50 500 º C E (GPa) 118 114 121 . (MPa) 249 237 230 (MPa) 670 657 635 EL (%) 40.3 43.3 51 600 º C E (GPa) 117 104 147 . (MPa) 242 228 280 (MPa) 635 616 675 EL (%) 41.5 44.6 51