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Type: Artigo de periódico
Title: Effect of the temperature on the structure and stability of Fe-18 Cr - (0 to 60) Ni alloys
Author: Bubani, FD
Decarli, CCM
Brollo, GL
Barreto, EH
Diniz, AE
Mei, PR
Abstract: The material studied consists of a series of alloys with a basic composition (weight %): 18Cr - 0.01C - 0.2 Si - 0.4 Mn, and levels of nickel varying from zero to 60%. Alloys in the annealed condition and after deformation at room temperature, 350 and 700 C to simulate the high temperatures achieved during machining were observed by optical microscopy. Equilibrium diagrams were generated by computational thermodynamics (Thermocalc) to predict the behavior of these alloys in a wide range of temperatures. The theoretical thermodynamic equilibrium conditions of the system were compared to the observed microstructures, indicating that the CFC phase in alloys with nickel content between 10% and 30% is, in fact, in a metastable condition at room temperature. Martensitic transformation induced by cold work in the alloy with 10% Ni was observed, validating the computer calculations.
Subject: Stainless steel
nickel-based alloys
computational thermodynamics
Country: Brasil
Editor: Escola De Minas
Citation: Rem-revista Escola De Minas. Escola De Minas, v. 63, n. 1, n. 45, n. 50, 2010.
Rights: aberto
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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