Determination of the Volume fraction of Retained Austenite in a 300m Steel by Heat Tinting Technique

Gisele Bonfiette Silva; Gustavo Henrique Dian; Sirlei Aparecida Araujo Brandão; Antonio Jorge Abdalla; Tomaz Manabu Hashimoto; Marcelo Dos Santos Pereira

doi:10.4271/2007-01-2624

2007-11-28

Determination of the Volume fraction of Retained Austenite in a 300m Steel by Heat Tinting Technique 2007-01-2624

Applying the Heat Tinting Technique the microestrutural characterization of a 300M steel (medium carbon steel) was accomplished. The steel was austenitized for 20 min to 900°C, followed by holding at 400°C (in the bainitic temperature), with maintenance time of the material in the temperature of 1min, 5min and 30min, aiming at the formation of a multiphase structure. Through the metallographic analysis it is verified that, with the use of this technique, it is possible the determination of the volume fraction of the present phases in the 300M steel, especially in the identification and quantification of the retained austenite.

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Determination of the Volume fraction of Retained Austenite in a 300m Steel by Heat Tinting Technique 2007-01-2624

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