ISSN 2594-5327
59º Congresso anual — Vol. 59 , num. 1 (2004)
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In high-strength low-alloy (HSLA) steels, the synergistic effect between microalloying elements during thermo-mechanical controlled processing (TMCP) is a powerful tool to achieve high strength and high toughness. The strengthening mechanisms by grain refinement and precipitation of carbides and nitrides are key factors in the design of steel chemistries and processing window during hot strip rolling. The present study describes the optimization of steel chemistry and rolling process by using an experimental matrix and a metallurgical model of microstructural evolution and mechanical behavior. It was established the influence of the chemical composition and process parameters and their interactions, for the development of a microalloyed steel with Nb-V-Ti. The results obtained in industrial processing are summarized in this work. Excellent tensile properties (Yield Strength > 520 MPa), high toughness and remarkable performance in industrial production were obtained with this methodological development.
In high-strength low-alloy (HSLA) steels, the synergistic effect between microalloying elements during thermo-mechanical controlled processing (TMCP) is a powerful tool to achieve high strength and high toughness. The strengthening mechanisms by grain refinement and precipitation of carbides and nitrides are key factors in the design of steel chemistries and processing window during hot strip rolling. The present study describes the optimization of steel chemistry and rolling process by using an experimental matrix and a metallurgical model of microstructural evolution and mechanical behavior. It was established the influence of the chemical composition and process parameters and their interactions, for the development of a microalloyed steel with Nb-V-Ti. The results obtained in industrial processing are summarized in this work. Excellent tensile properties (Yield Strength > 520 MPa), high toughness and remarkable performance in industrial production were obtained with this methodological development.
Palavras-chave
Microalloyed Steel, TMCP, API steel, ERW Pipes
Microalloyed Steel, TMCP, API steel, ERW Pipes
Como citar
Bruna, Roberto; Siciliano, Fluvio; Boardignon, Pascoal; Nomaksteinsky, Carlos.
Development of High Strength Nb-V-Ti Steels for ERW Pipes by Thermo-Mechanical Controlled Processing at Siderar,
p. 4567-4576.
In: 59º Congresso anual,
São Paulo, Brasil,
2004.
ISSN: 2594-5327, DOI 10.5151/2594-5327-4470
