Page 68 - MSAM-3-2

Materials Science in Additive Manufacturing Mechanical properties of NiTi TPMS

4 h, 6 h, 8 h, and 10 h exhibited sizes of 31.11 ± 3.67 µm, B2 parent phase, with three primary peaks corresponding
26.81 ± 1.89 µm, 46.77 ± 4.16 µm, 39.17 ± 4.57 µm, and to the crystal plane index of (100), (110), and (200),
44.63 ± 6.03 µm, respectively. These results indicated a respectively, with the highest intensity observed for the
decrease in grain size and an increasing trend of columnar diffraction peak of (200). On aging heat treatment, the
crystals after aging treatment. samples exhibited the presence of the B2 phase, B19’

The XRD and semi-quantitative analysis results are phase, and NiTi phase. This phenomenon was attributed
2
presented in Figure 3. The untreated samples exhibited the to the decrease in Ni content due to evaporation during
A D

B E

C F

Figure 2. The microstructure of the X–Z plane of the sample treated with different aging times. (A) 0 h; (B) 2 h; (C) 4 h; (D) 6 h; (E) 8 h; and (F) 10 h. Scale
bars: 100 µm; magnification: ×5.

A B

Figure 3. Phase analysis of laser powder bed fusion samples with aging heat treatment. (A) X-ray diffraction pattern. (B) Semi-quantitative analysis results.

Volume 3 Issue 2 (2024) 5 doi: 10.36922/msam.3137