Hot deformation behavior of a new austenite–ferrite duplex stainless steel containing high content of nitrogen

Fang, Yiliu; Liu, Z.Y.; Song, Hongwei; Jiang, Laizhu

doi:10.1016/j.msea.2009.07.012

Cited by 66 publications

(25 citation statements)

References 18 publications

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“…Consequently, great strain occurs in the ferrite phase and supplies additional energy for nucleation. Moreover, the ferrite phase has a higher diffusion rate of atoms compared with the austenite phase at high temperatures [28]. Both of them can produce a recrystallization process, which is followed by grain growth in the ferrite phase.…”

Section: Microstructural Evolutionmentioning

confidence: 99%

“…During FSW, deformation mainly occurs in the ferrite phase because it is considerably weak at high temperatures. Fang et al have demonstrated that, during the hot deformation of a new DSS containing high nitrogen content, the wedge crack is nucleated at the interface between the ferrite and austenite phases and easily propagates toward the ferrite phase; hence, the ferrite phase is softer than the austenite phase at high temperatures [28].Consequently, great strain occurs in the ferrite phase and supplies additional energy for nucleation. Moreover, the ferrite phase has a higher diffusion rate of atoms compared with the austenite phase at high temperatures [28].…”

Section: Microstructural Evolutionmentioning

confidence: 99%

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Characterization of the Microstructure, Mechanical Properties, and Corrosion Resistance of a Friction-Stir-Welded Joint of Hyper Duplex Stainless Steel

Xing-long

et al. 2017

Metals

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This study investigates the microstructure, mechanical properties, and corrosion resistance of a friction-stir-welded joint of the hyper duplex stainless steel SAF2707. Friction stir welding (FSW) is performed at a tool rotation rate of 400 rpm and a welding speed of 100 mm/min. The microstructure of the joints is examined using scanning electron microscopy and X-ray diffraction. Tensile test and fractography are subsequently employed to evaluate the mechanical properties of the joints. Results show that the grain size of the stir zone (SZ) is smaller than that of the base metal (BM). Electron back-scattered diffraction analysis reveals that fine-equiaxed grains form in the SZ because of the dynamic recrystallization during the FSW. These grains become increasingly pronounced in the austenite phase. The tensile specimens consistently fail in the BM, implying that the welded joint is an overmatch to the BM. Moreover, the welded joints consist of finer grains and thus display higher tensile strength than their BMs. Potentiodynamic polarization curves and impedance spectroscopy both demonstrate that the corrosion resistance of the SZ is superior to that of the base material.

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Section: Microstructural Evolutionmentioning

confidence: 99%

Section: Microstructural Evolutionmentioning

confidence: 99%

Characterization of the Microstructure, Mechanical Properties, and Corrosion Resistance of a Friction-Stir-Welded Joint of Hyper Duplex Stainless Steel

Xing-long

et al. 2017

Metals

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“…In order to define the safe regions of deformation and also to avoid the occurrence of flow localization and therefore premature fracture, a practical approach is plotting a processing map. This window has recently been provided for a duplex stainless steel [29]. The approach of processing map, originally proposed by Raj [30], is defined as a representation of microstructural changes and restoration mechanisms of a given material.…”

Section: Introductionmentioning

confidence: 99%

Hot working behavior of 2205 austenite–ferrite duplex stainless steel characterized by constitutive equations and processing maps

Momeni

Dehghani

2011

Materials Science and Engineering: A

138

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“…The effects of strain rate and temperature are equally important during thermomechanical processing and hot working (metal formation) of metals [25][26][27][28][29]. Microstructure evolution and flow behaviour of any material play a significant role in the flow stress of the material.…”

Section: <01 Conventional Shear Tests 01-100mentioning

confidence: 99%

Structure–Property Correlation and Constitutive Description of Structural Steels during Hot Working and Strain Rate Deformation

Prusty

Banerjee

2020

Materials

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The behaviour of plain carbon as well as structural steels is qualitatively different at different regimes of strain rates and temperature when they are subjected to hot-working and impact-loading conditions. Ambient temperature and carbon content are the leading factors governing the deformation behaviour and substructural evolution of these steels. This review aims at investigating the mechanical behaviour of structural (or constructional) steels during their strain rate (ranging from very low to very high) as well as hot-working conditions and subsequently establishing the structure–property correlation. Rate-dependent constitutive equations play a significant role in predicting the material response, particularly where the experiments are difficult to perform. In this article, an extensive review is carried out on the merits and limitations of constitutive models which are commonly used to model the deformation behaviour of plain carbon steels.

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Hot deformation behavior of a new austenite–ferrite duplex stainless steel containing high content of nitrogen

Cited by 66 publications

References 18 publications

Characterization of the Microstructure, Mechanical Properties, and Corrosion Resistance of a Friction-Stir-Welded Joint of Hyper Duplex Stainless Steel

Characterization of the Microstructure, Mechanical Properties, and Corrosion Resistance of a Friction-Stir-Welded Joint of Hyper Duplex Stainless Steel

Hot working behavior of 2205 austenite–ferrite duplex stainless steel characterized by constitutive equations and processing maps

Structure–Property Correlation and Constitutive Description of Structural Steels during Hot Working and Strain Rate Deformation

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