Structure and Characteristics of EP648 and VZh159 Alloys Synthesized by Selective Laser Melting after Simulated Annealing

The structure and characteristics of EP648 and VZh159 heat-resistant alloys synthesized by selective laser melting after HIP, aging, and simulated annealing for 500 h are compared. The disbalance of alloying of EP648 and VZh159 alloys is calculated. It is shown that a decrease in strength characteri...

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Veröffentlicht in:	Inorganic materials : applied research 2021, Vol.12 (1), p.117-124
Hauptverfasser:	Kablov, E. N., Evgenov, A. G., Mazalov, I. S., Shurtakov, S. V., Zaitsev, D. V., Prager, S. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aging (metallurgy) Alloying Alloys Chemistry Chemistry and Materials Science Heat resistant alloys Industrial Chemistry/Chemical Engineering Inorganic Chemistry Laser beam melting Materials Science Mechanical properties Nickel base alloys Rapid prototyping Sigma phase Sigma phase precipitation Simulated annealing Simulation Synthesis
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Zusammenfassung:	The structure and characteristics of EP648 and VZh159 heat-resistant alloys synthesized by selective laser melting after HIP, aging, and simulated annealing for 500 h are compared. The disbalance of alloying of EP648 and VZh159 alloys is calculated. It is shown that a decrease in strength characteristics, an increase in ductility, and a decrease in the period between simulated annealing and fracture of EP648 alloy is related to a decrease in the volume fraction of the particles of the σ phase caused by precipitation of α-Cr particles. It is determined that the synthesized VZh159 alloy after simulated annealing is far superior to the EP648 alloy according to the set of mechanical characteristics owing to more balanced alloying.
ISSN:	2075-1133 2075-115X
DOI:	10.1134/S2075113321010123