Processes of Recrystallization in Austenitic Alloy Obtained by Methods of Selective Laser Melting

Authors: Bazaleeva K.O., Tsvetkova E.V., Balakirev E.V. Published: 19.10.2016
Published in issue: #5(110)/2016  

DOI: 10.18698/0236-3941-2016-5-117-127

Category: Metallurgy and Science of Materials | Chapter: Metal Science, Thermal Processing of Metals and Alloys  
Keywords: selective laser melting, austenitic steel, thermal stability, defectiveness

The study tested the thermal stability of the austenitic alloy Fe - 17% Cr - 12% Ni - 2% Mo - 1% Mn - 0.7% Si - 0.02% C, obtained by selective laser melting. In our research we applied methods of metallographic analysis, as well as scanning and transmission electron microscopy. It is shown that cellular structure is retained in the alloy up to 800°C. With further increase in the annealing temperature, the dislocation structure of the alloy is changed (800÷950°C) and the supersaturated with atmosphere atoms γ-solid solution decomposes (1050÷1150°C).


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