The effect of nitrogen on the formation of phase reversion-induced nanograined/ultrafine-grained structure and mechanical behavior of a Cr–Ni–N steel

Misra, R.D.K.; Zhang, Z.; Venkatasurya, P.K.C.; Somani, Mahesh C.; Karjalainen, L.P.

doi:10.1016/j.msea.2010.11.031

Cited by 18 publications

(4 citation statements)

References 36 publications

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“…The influence of the reversion type on the microstructural evolution has been demonstrated in Cr-Ni steels. 5,7,[10][11][12] However, the influence of microalloying has been investigated only by Sadeghpour et al 13) in a 201L-Ti steel and very recently by Shirdel et al 14) in 304L type steel microalloyed with Mo, Ti, V and Nb.…”

Section: Effect Of Nb Microalloying On Reversion and Grain Growth In mentioning

confidence: 99%

Effect of Nb Microalloying on Reversion and Grain Growth in a High-Mn 204Cu Austenitic Stainless Steel

et al. 2015

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Section: Effect Of Nb Microalloying On Reversion and Grain Growth In mentioning

confidence: 99%

Effect of Nb Microalloying on Reversion and Grain Growth in a High-Mn 204Cu Austenitic Stainless Steel

et al. 2015

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“…Ni is the key element that promotes α-γ phase transition, while Ni gathers and provides the conditions for the reversed austenite nucleation [ 1 , 2 , 3 , 4 , 5 , 6 ]. In addition, N, Si, and other elements impact the phase transition process [ 7 , 8 , 9 , 10 , 11 ]. As an austenitizing element, the effect of Cu on the formation of reversed austenite is negligible.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cu on the Formation of Reversed Austenite in Super Martensitic Stainless Steel

Jiang

Zhao

2023

Materials

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We investigated the effect of Cu on the formation of reversed austenite in super martensitic stainless steel by using X-ray diffraction (XRD), a transmission electron microscope (TEM) and an energy-dispersive spectrometer (EDS). Our results showed that the microstructure of the steels comprised tempered martensite and diffused reversed austenite after the steels were quenched at 1050 °C and tempered at 550–750 °C. The volume fraction of reversed austenite in the steel with 3 wt.% of Cu (3Cu) was more than that with 1.5 wt.% of Cu (1.5Cu). The transmission electron microscope results revealed that the reversed austenite in 1.5Cu steel mainly had the shape of a thin strip, while that in 3Cu steel had a block shape. The nucleation points and degree of Ni enrichment of reversed austenite in 3Cu steel were higher than those in 1.5Cu steel. The reversed austenite was more likely to grow in ε-Cu enriched regions. Therefore, Cu can promote reversed austenite nucleation and growth. The mechanical properties of 3 Cu steel are obviously better than those of 1.5Cu steel when tempered at 550–650 °C.

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“…For this purpose, researchers adopted severe plastic deformation (SPD) methods to refine the grain size, such as equal channel angular processing (ECAP), accumulative roll‐bonding (ARB), and high pressure torsion (HPT) . In recent years, Misra's group proposed the strain‐induced martensite reversion process, which is one of the most effective processing routes to produce NG/UFG stainless steels. This approach consists of severe cold reduction to transform metastable austenite to dislocation cell‐type martensite and increase the concentration of lattice defects .…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Deformation Behavior of Nano/ultrafine Fe–18Cr–8Ni Austenitic Steel Processed by Low Temperature Rolling and Annealing Treatment

Liu

Deng

Huang

et al. 2018

steel research int.

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In the present study, the method of phase reversion process is adopted to obtain nanograined/ultrafine-grained (NG/UFG) structure in 18Cr-8Ni austenitic stainless steel. Severe cold deformation (86% reduction) at room temperature and (64%, 86% reduction) at À50 C is carried out, followed by annealing in the conditions of 650 C-50 min and 700 C-15 min. The influence of different cold rolling and annealing conditions on the microstructure and mechanical properties of stainless steel is studied. The decrease of rolling temperature and the increase of reduction lead to the volume fraction of strain-induced martensite increase. Lath-type martensite, dislocation celltype martensite, and untransformed austenite in 64% reduction (at À50 C) and mainly dislocation cell-type structure in 86% reduction (at room temperature and À50 C) are observed. Increasing reduction or rolling temperature promotes the cold-rolled α texture of strain-induced martensite to the stable orientations. The grain size obtained is in the range of 0.4-0.89 μm, with yield strength in the range of 684-1017 MPa and high ductility of 23-54%. Deformation behavior shows that the amount of twins and stacking faults at 5 mm distance from the fracture is higher than the fracture.

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The effect of nitrogen on the formation of phase reversion-induced nanograined/ultrafine-grained structure and mechanical behavior of a Cr–Ni–N steel

Cited by 18 publications

References 36 publications

Effect of Nb Microalloying on Reversion and Grain Growth in a High-Mn 204Cu Austenitic Stainless Steel

Effect of Nb Microalloying on Reversion and Grain Growth in a High-Mn 204Cu Austenitic Stainless Steel

Effect of Cu on the Formation of Reversed Austenite in Super Martensitic Stainless Steel

Mechanical Properties and Deformation Behavior of Nano/ultrafine Fe–18Cr–8Ni Austenitic Steel Processed by Low Temperature Rolling and Annealing Treatment

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