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Article

Temperature- and Time-Dependent Mechanical Behavior of Post-Treated IN625 Alloy Processed by Laser Powder Bed Fusion

1
Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC H3C 1K3, Canada
2
Department of Mechanical Engineering, École Polytechnique de Montréal, 2900 boul. Édouard-Montpetit, Montreal, QC H3T 1J4, Canada
*
Author to whom correspondence should be addressed.
J. Manuf. Mater. Process. 2019, 3(3), 75; https://doi.org/10.3390/jmmp3030075
Received: 21 June 2019 / Revised: 16 August 2019 / Accepted: 26 August 2019 / Published: 29 August 2019
(This article belongs to the Special Issue Anniversary Feature Papers)
The microstructure and mechanical properties of IN625 alloy processed by laser powder bed fusion (LPBF) and then subjected to stress relief annealing, high temperature solution treatment, and hot isostatic pressing were studied. Tensile testing to failure was carried out in the 25–871 °C temperature range. Creep testing was conducted at 760 °C under 0.5–0.9 yield stress conditions. The results of the present study provided valuable insights into the static and creep properties of LPBF IN625 alloy, as compared to a wrought annealed alloy of similar composition. It was shown that at temperatures below 538 °C, the mechanical resistance and elongation to failure of the LPBF alloy were similar to those of its wrought counterpart, whereas at higher temperatures, the elongation to failure of the LPBF alloy became significantly lower than that of the wrought alloy. The solution-treated LPBF alloy exhibited significantly improved creep properties at 760 °C as compared to the wrought annealed alloy, especially under intermediate and low levels of stress. View Full-Text
Keywords: nickel-based superalloys; additive manufacturing; high temperature mechanical properties; creep resistance nickel-based superalloys; additive manufacturing; high temperature mechanical properties; creep resistance
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MDPI and ACS Style

Kreitcberg, A.; Inaekyan, K.; Turenne, S.; Brailovski, V. Temperature- and Time-Dependent Mechanical Behavior of Post-Treated IN625 Alloy Processed by Laser Powder Bed Fusion. J. Manuf. Mater. Process. 2019, 3, 75. https://doi.org/10.3390/jmmp3030075

AMA Style

Kreitcberg A, Inaekyan K, Turenne S, Brailovski V. Temperature- and Time-Dependent Mechanical Behavior of Post-Treated IN625 Alloy Processed by Laser Powder Bed Fusion. Journal of Manufacturing and Materials Processing. 2019; 3(3):75. https://doi.org/10.3390/jmmp3030075

Chicago/Turabian Style

Kreitcberg, Alena, Karine Inaekyan, Sylvain Turenne, and Vladimir Brailovski. 2019. "Temperature- and Time-Dependent Mechanical Behavior of Post-Treated IN625 Alloy Processed by Laser Powder Bed Fusion" Journal of Manufacturing and Materials Processing 3, no. 3: 75. https://doi.org/10.3390/jmmp3030075

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