Metallurgy, Vol. 58 No. 1-2, 2019.
Original scientific paper
Analysis of the initial deformabiliti of austenitic stainless stells with a bend test
B. Arh
; Institute of Metals and Technology, Ljubljana, Slovenia
F. Tehovnik
; Institute of Metals and Technology, Ljubljana, Slovenia
F. Vode
; Institute of Metals and Technology, Ljubljana, Slovenia
S. Malej
; Institute of Metals and Technology, Ljubljana, Slovenia
B. Podgornik
; Institute of Metals and Technology, Ljubljana, Slovenia
Abstract
Austenitic stainless steel solidify under non-equilibrium conditions, and form two-phase microstructure of austenite and δ-ferrite. Workability of steels in hot are better in the primary crystallization of δ-ferrite. The influence of chemical composition on solid-state formation of delta ferrite phase during hot deformation was investigated. The laboratory prepared austenitic stainless SS2343 steel with the Creq/Nieq index – 1,62 were chosen for this research. The transformation of δ-ferrite during annealing in range 1 050 – 1 250 °C was analyzed. Hot bending test was selected for the evaluation of the initial plasticity of “as cast” SS2343 steel. Bending test of as cast steel plates with volume fraction 12,5 % of δ-ferrite have shown, that cracks do not form.
Keywords
austenitic stainless steel; chemical composition; δ-ferrite; bending test; heat annealing
Hrčak ID:
206518
URI
Publication date:
1.1.2019.
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