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Latin American applied research

versión impresa ISSN 0327-0793


OLDANI, C. R.  y  ALIJA, A.. Low carbon steel sheets obtained by reactive annealing. Lat. Am. appl. res. [online]. 2002, vol.32, n.2, pp.137-140. ISSN 0327-0793.

This paper deals with the possibility of reducing carbon content by heat treatment in reactive atmospheres in order to improve plastic deformations properties of steel sheets. The heat treatment involves a decarburation annealing after a cold rolling, as opposed to the traditional process that performs the heat treatment in non-reactive atmospheres. Some of the most relevant variables were studied. For this, commercial hot rolling steel sheets were cold rolled with different grades of cold reduction (60%, 70% and 80%). The recrystallization temperature and the decarburation kinetics were determined by heat treatments performed at temperatures varying between 600 and 700ºC, for variable lengths of time up to 2 hours. The grain size evolution was monitored by metallography. In order to analyse the plastic properties of the treated sheets, the n and r coefficients were obtained by tension tests and the sheet texture was determined by X-ray diffraction.

Palabras clave : Cold Rolling; Decarburation; Drawability; Recrystallization.

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