Characterization of a Cold-Rolled 2101 Lean Duplex Stainless Steel
Characterization of a Cold-Rolled 2101 Lean Duplex Stainless Steel
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DOI：
10.1017/s1431927613001426
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发表时间：
2013-05
影响因子：
2.8
通讯作者：
P. Bassani;M. Breda;K. Brunelli;I. Mészáros;F. Passaretti;M. Zanellato;I. Calliari
中科院分区：
文献类型：
--
作者：
P. Bassani;M. Breda;K. Brunelli;I. Mészáros;F. Passaretti;M. Zanellato;I. Calliari
Abstract Duplex stainless steels (DSS) may be defined as a category of steels with a two-phase ferritic–austenitic microstructure, which combines good mechanical and corrosion properties. However, these steels can undergo significant microstructural modification as a consequence of either thermo-mechanical treatments (ferrite decomposition, which causes σ- and χ-phase formation and nitride precipitation) or plastic deformation at room temperature [austenite transformation into strain-induced martensite (SIM)]. These secondary phases noticeably affect the properties of DSS, and therefore are of huge industrial interest. In the present work, SIM formation was investigated in a 2101 lean DSS. The material was subjected to cold rolling at various degrees of deformation (from 10 to 80% thickness reduction) and the microstructure developed after plastic deformation was investigated by electron backscattered diffraction, X-ray diffraction measurements, and hardness and magnetic tests. It was observed that SIM formed as a consequence of deformations higher than ~20% and residual austenite was still observed at 80% of thickness reduction. Furthermore, a direct relationship was found between microstructure and magnetic properties.
