Open AccessStructure and thermal stability of austenitic steel Fe-17%Cr-12%Ni-2%Mo-0.02%C synthesized by selective laser melting
Author(s) -
К. О. Базалеева,
Е. В. Цветкова
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1686/1/012001
Subject(s) - materials science , indentation hardness , thermal stability , alloy , austenite , annealing (glass) , crystallization , impurity , selective laser melting , metallurgy , laser , crystallography , analytical chemistry (journal) , microstructure , chemical engineering , optics , chemistry , chromatography , physics , organic chemistry , engineering
The structural features of the Fe-17%Cr-12%NI-2%Mo-0.02%C alloy manufactured by selective laser melting (SLM) and the thermal stability of the formed structures are investigated. It is shown that crystallization cells form at SLM, the boundaries of which are volume plexes of dislocations, fixed by segregation of impurity atoms. The microhardness of such a structure is one and a half times higher than that of an alloy of the same composition in a standard hardened state. During annealing up to 800 °C, this cellular structure maintains stability while maintaining hardness indices.