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14. Microstructure, Texture and Microhardness Evolution during Annealing Heat Treatment and Mechanical Behavior of the Niobium-Stabilized Ferritic Stainless Steel ASTM 430 and Niobium-Titanium-Stabilized Ferritic Stainless Steel ASTM 439: a Comparative Study

Author

Tanure, Leandro Paulo de Almeida Reis, primary, Alcântara, Cláudio Moreira de, additional, Oliveira, Tarcísio Reis de, additional, Santos, Dagoberto Brandão, additional, and Gonzalez, Berenice Mendonça, additional

Published
2017
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23. CRESCIMENTO ANORMAL DO GRÃO AUSTENÍTICO E SUA INFLUÊNCIA NA FRAÇÃO VOLUMÉTRICA DE AUSTENITA RETIDA APÓS A TÊMPERA DE UM AÇO ABNT 5135.

Author

de Brito Ferreira, Camila, Modenesi, Paulo José, and Santos, Dagoberto Brandão

Abstract

Copyright of Tecnologia em Metalurgia, Materiais e Mineração is the property of Associacao Brasileira de Metalurgia e Materiais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2015
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24. ESTUDO COMPARATIVO DE MÉTODOS DE AVALIAÇÃO DA RECRISTALIZAÇÃO PARA O AÇO INOXIDÁVEL FERRÍTICO AISI 430E.

Author

Cunha Ferreira, Alessandra, Dias do Carmo, Dâmia Carina, Pérez Escobar, Diana María, and Santos, Dagoberto Brandão

Abstract

Copyright of Tecnologia em Metalurgia, Materiais e Mineração is the property of Associacao Brasileira de Metalurgia e Materiais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2014
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25. MODELOS MATEMÁTICOS PARA A EVOLUÇÃO DA MICROESTRUTURA NA LAMINAÇÃO DE TUBOS SEM COSTURA.

Author

De Carvalho, Ricardo Nolasco, Cunha Ferreira, Marcelo Almeida, Santos, Dagoberto Brandão, and Marques Barbosa, Ronaldo Antônio Neves

Subjects
ROLLING (Metalwork), MATHEMATICAL models, MICROSTRUCTURE, THERMOMECHANICAL treatment, METALS, COOLING
Abstract

Copyright of Tecnologia em Metalurgia, Materiais e Mineração is the property of Associacao Brasileira de Metalurgia e Materiais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2013
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26. MODELO FÍSICO DA DEFORMAÇÃO E ENCRUAMENTO DO AÇO TWIP COM ALTO TEOR DE MANGANÊS E BAIXO CARBONO.

Author

Spindola, Mirelle Oliveira, Gonzalez, Berenice Mendonça, and Santos, Dagoberto Brandão

Subjects
MANGANESE metallurgy, STEEL metallurgy, TWINNING (Crystallography), SCANNING electron microscopy, RECRYSTALLIZATION (Metallurgy), POLYCRYSTALS, MATERIAL plasticity
Abstract

Copyright of Tecnologia em Metalurgia, Materiais e Mineração is the property of Associacao Brasileira de Metalurgia e Materiais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2010

27. CARACTERÍSTICAS DO ENCRUAMENTO DO AÇO TWIP ALTO Mn E BAIXO CARBONO LAMINADO A FRIO E RECOZIDO.

Author

Duarte, Dayanna Moreira, Ribeiro, Érica Aparecida Silva, Dutra, Lorena Freitas, Gonzalez, Berenice Mendonça, and Santos, Dagoberto Brandão

Subjects
STEEL metallurgy, ENERGY consumption management, SCANNING electron microscopy, RECRYSTALLIZATION (Metallurgy), STRAIN hardening, ANNEALING of metals
Abstract

Copyright of Tecnologia em Metalurgia, Materiais e Mineração is the property of Associacao Brasileira de Metalurgia e Materiais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2010

28. EVOLUÇÃO DA MICROESTRUTURA DE AÇOS MICROLIGADOS AO VNb E AO VNb Ti NA LAMINAÇÃO CONTÍNUA DE TUBOS SEM COSTURA.

Author

de Carvalho, Ricardo Nolasco, Cunha Ferreira, Marcelo Almeida, Santos, Dagoberto Brandão, and Barbosa, Ronaldo

Subjects
STEEL tubes, MICROSTRUCTURE, ROLLING (Metalwork), SIMULATION methods & models, STRAINS & stresses (Mechanics), TORSION
Abstract

Copyright of Tecnologia em Metalurgia, Materiais e Mineração is the property of Associacao Brasileira de Metalurgia e Materiais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2009

29. Martensite reversion and strain hardening of a 2304 lean duplex stainless steel

Author

Santos, Renata Mangini, Rodrigues, Daniella Gomes, Dias Santos, Maria Luiza, and Santos, Dagoberto Brandão

Abstract

Lean duplex stainless steels (LDSS) have a microstructure composed of ferrite and austenite phases. This microstructure provides good mechanical and corrosion resistances. The effects of cold rolling, leading to α′-martensite formation by strain-induced transformation and subsequent reversion annealing treatment were analyzed on the microstructural evolution and mechanical properties of an LDSS 2304. The steel was cold-rolled to a 60% reduction and annealed for 1800 s at 600, 700, 800, and 900 °C. The analysis of mechanical properties performed by tensile tests, along with microstructural analysis, allowed the characterization of each stage of strain hardening. The work hardening rate curves revealed well-defined stages involved in the steel deformation process, linked to the different mechanisms of plastic deformation of the microstructure. These results indicated that a transformation-induced plasticity, TRIP effect, occurred concurrently in the austenite after reversion at low annealing temperatures. The synergy and mutual competition from the coexistence of slipping and TRIP caused multiple-stage strain hardening. The shape of the strain-hardening curve for the selected annealing temperature range could be divided into two cases: a multiple-stage strain-hardening for the as-received and fully annealed sample (900 ºC) to a characteristic three-stage strain-hardening from 600 to 800 °C annealing conditions. Microstructural observations revealed that the typical three-stage hardening was mainly related to strain-induced martensite formation and its reversion.

Published
2021
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