fig4

Figure 4. HT heat treatment of long bar sample prepared by LPBF in the work by Zhao et al. Reproduced with permission. © 2020 Acta Materialia Inc. Published by Elsevier B.V. All rights reserved.^[18]. (A) Printed Inconel 718 samples using LPBF. (B) Homogenized samples before and after aging in the furnace with a gradient temperature zone. (C) Illustration of the furnace with a temperature gradient. (D) Temperature range identified during the aging heat treatment applied on the long bar sample. LPBF: Laser powder bed fusion.