Thermomechanical Processing of Microalloyed Steels Used for Naval and Oil Industries

  • Ana DONIGA "Dunarea de Jos" University of Galati, Romania
  • Elisabeta VASILESCU "Dunarea de Jos" University of Galati, Romania
  • Miltiade ISTRATE "Dunarea de Jos" University of Galati, Romania
  • Silviu MACUTA "Dunarea de Jos" University of Galati, Romania

Résumé

This paperwork shows the laboratory experiments made on X60 and X65 steels with several intercritical thermomechanical treatment application.
Two variants were used: “down-up” thermomechanical treatment with heating and rolling in the intercritical range and “up-down” thermomechanical treatment with preliminary complete austenitizing and rolling in the intercritic interval. High values of the strength characteristics and a good plasticity were gotten. A comparison was made with gotten results of the classical thermal treatment application (normalizing).

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Références

[1]. Leger J. - Etudes des traitements intercritiques (A1-A3) des aciers hypoeutectoides Mem. Scient. Met LXVII, nr. 5, 1971.
[2]. Vasilescu E. - Tratamente termice si termochimice (note de curs).
[3]. Nicolae Popescu s.a - Tratamente termice neconvenţionale (Bucureşti, Editura Tehnică 1990).
[4]. Suzana Gâdea şi Maria Petrescu - Metalurgie fizică si studiul metalelor (Bucureşti, E.D.P. 1983).
[5]. Doniga A., Vasilescu E. - Bazele tratamentelor termomecanice E.D.P. 2004.
Publiée
2005-05-15
Rubrique
Articles

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