Effect of minor alloying elements on crack-formation characteristics of Hastelloy-X manufactured by selective laser melting

• Published in: Additive manufacturing Vol. 16; pp. 65 - 72
• Main Authors: Tomus, Dacian, Rometsch, Paul A., Heilmaier, Martin, Wu, Xinhua
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.08.2017
• Subjects: Cracking; Microstructure; Nickel superalloys; Selective laser melting; Cracking; Nickel superalloys; Selective laser melting; Microstructure

Two batches of pre-alloyed Hastelloy-X powder with different Si, Mn and C contents were used to produce specimens by Selective Laser Melting (SLM). Cracks with various morphologies were found in some of the parts. Two major reasons that control crack formation and propagation were considered: (i) in...