Effect of cold rolling on microstructure and magnetic properties in a metastable lean duplex stainless steel

2010 ◽  
Vol 45 (19) ◽  
pp. 5339-5346 ◽  
Author(s):  
Silvia Baldo ◽  
Istvan Mészáros
2021 ◽  
Vol 802 ◽  
pp. 140577
Author(s):  
Ariane Neves de Moura ◽  
Cláudio Moreira de Alcântara ◽  
Tarcísio Reis de Oliveira ◽  
Marco Antônio da Cunha ◽  
Marcelo Lucas Pereira Machado

Materialia ◽  
2020 ◽  
Vol 14 ◽  
pp. 100854
Author(s):  
S. Cazottes ◽  
V. Massardier ◽  
R. Danoix ◽  
D. Rolland ◽  
S. Cissé ◽  
...  

2020 ◽  
pp. 2000612
Author(s):  
Qirui Zhang ◽  
Jingyuan Li ◽  
Yulai Chen ◽  
Wang Li ◽  
Zhijun Gao

2012 ◽  
Vol 715-716 ◽  
pp. 550-550 ◽  
Author(s):  
Clara Herrera ◽  
Dirk Ponge ◽  
Dierk Raabe

Duplex stainless steels (DSSs) are based on the Fe-Cr-Ni system and formed by ferrite (30-70%) and austenite. They have high tensile strength, good toughness and weldability and excellent corrosion resistance including stress-corrosion cracking and resistance to localized corrosion. The increase of the raw materials of the last years, there has been a motivation to develop new stainless steels with lower contents of nickel and molybdenum. Lean duplex stainless steels (LDSSs) are almost Mo free and nickel content lower than 4%. The lean duplex grades are expected to substitute not only 304/316 grades but also other duplex stainless steel grades. LDSSs are used for structural applications and for the less corrosion conditions such as liquor tanks and suction rolls. The aim of the present work was to study the kinetics of recovery and recrystallization of the lean duplex stainless steel 1.4362 during annealing treatment. The material was subjected to hot rolling and cold rolling of 70%, annealing treatment for different times at temperatures from 1000 to 1100°C and subsequently water quenched. Optical microscopy and electron back scattering diffraction (EBSD) were employed to study the evolution of the microstructure during the annealing treatment. After cold rolling austenite exhibited more strain hardening than ferrite. Consequently, the driving force of the austenite for recrystallization is higher. During annealing, recovery took place in ferrite, while the austenite remained nearly unrecovered until beginning of recrystallization. The layered grain morphology produced during cold rolling remained after the annealing treatment. The volume fraction of the phases did not show significant changes with the annealing time. Nevertheless, the volume fraction of austenite decline with an increasing of annealing temperature. After 60 seconds at 1100°C, annealing primary recrystallization had progressed in both phases, which show a bamboo-structure where the grain boundaries ran perpendicular to the phase boundaries. Grain growth progressed for longer annealing times. After 600 seconds, the bamboo-structure started to change for a more globular grain structure, pearl-structure. It continued and became more pronounced at longer annealing times. At lower temperatures, the recrystallization behavior is similar; however, the structure was refined. Recovery is favored by the high stacking fault energy of ferrite and the layered grain morphology. The lean duplex stainless steel 1.4362 shows a similar recrystallization kinetics compare with standard duplex stainless steels.


2019 ◽  
Vol 150 ◽  
pp. 138-149 ◽  
Author(s):  
Daniella Gomes Rodrigues ◽  
Graziele Gianini Braga Maria ◽  
Nayara Aparecida Lopes Viana ◽  
Dagoberto Brandão Santos

2016 ◽  
Vol 47 (10) ◽  
pp. 5037-5048 ◽  
Author(s):  
Qingxuan Ran ◽  
Wanjian Xu ◽  
Zhaoyu Wu ◽  
Jun Li ◽  
Yulai Xu ◽  
...  

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