Microstructure Evolution and Mechanical Properties of Lean Duplex Stainless Steel Bars Prepared by a Short Process

Zhang, Xinghai; Gong, Qingdi; Li, Jiaqi; Liu, Chunting; Li, Jingyuan

doi:10.1007/s12540-023-01404-y

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…4 a). Pissanti et al 28 and Zhang et al 29 have also reported the presence of chiefly ferrite phases in similar alloys at high working temperature. Additionally, a microduplex microstructure is also present close to the tip of the insert.…”

Section: Resultsmentioning

confidence: 90%

Friction taper stitch welding of a duplex stainless steel

Rapaka,

de Lima Lessa,

Vieira Braga Lemos

et al. 2023

Sci Rep

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Friction taper stitch welding (FTSW) is a novel technique that uses multiple inserts to conceal surface crack in a given substrate. The inserts are rotated and forced to fill the crack as plasticized material, and forge with the substrate in solid-state. The process is well suited for alloys such as duplex stainless steel, which suffers degradation of properties during fusion welding. A detailed experimental and theoretical investigation is presented here on FTSW of a duplex stainless steel (DSS). The experimental results show the presence of a ferrite-rich phase along the interface. The results computed by the numerical process model reveal a direct influence of thermal cycle in the amount of ferrite along the joint interface. The welded joint shows near homogeneous structure and properties similar to those of the substrate.

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Section: Resultsmentioning

confidence: 90%

Friction taper stitch welding of a duplex stainless steel

Rapaka,

de Lima Lessa,

Vieira Braga Lemos

et al. 2023

Sci Rep

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show abstract

“…These grain boundaries can serve as nucleation points for fine recrystallized grains. [ 39 ] In addition, necklace microstructures and bulging grain boundaries were typical features of discontinuous DRX. [ 40 ] As shown in Figure 10b, large amounts of low‐angle grain boundaries (LAGBs, 2°–15°) in the original austenite can be observed.…”

Section: Resultsmentioning

confidence: 99%

Constitutive Modeling for Flow Stress and Processing Maps of a 0.2C–2.0Mn–0.5Cr Microalloyed Steel

Feng,

Zhang,

Zhang

et al. 2023

steel research int.

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Low‐carbon microalloyed steel with the microstructure of bainite is frequently utilized to produce automotive parts. The systematic investigation of the hot deformation behavior can serve as a reference for the optimization of deformation process parameters. The hot deformation of 0.2C–2.0Mn–0.5Cr microalloyed steel is studied. Based on the stress–strain curve, an Arrhenius model with strain compensation is established. The correlation coefficient R2 and the average absolute relative error calculated according to this model are 0.962 and 4.871%. The microstructure evolution at the strain of 0.90 is studied. In the stable region with substantial power dissipation, the microstructure is uniformly fine. The strain rate is high in the stable region with low‐power dissipation, and the room‐temperature microstructure after deformation retains a large amount of deformation storage energy and fine substructures. During deformation, the banded structures are formed in the instable region. The difference in dislocation density between the band structure and the nearby regions promotes the formation of necklace microstructures. Therefore, the 0.2C–2.0Mn–0.5Cr microalloyed steel has an ideal deformation process window in the range of a hot deformation temperature of 880–920 °C and a strain rate of 0.1–0.3 s−1.

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Thickness-Dependent Microstructure and its Effect on Anisotropic Mechanical Properties of Duplex Stainless Steel 2205 Multi-pass Welded Joints

Dong,

Xie,

et al. 2023

Acta Metall. Sin. (Engl. Lett.)

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Microstructure Evolution and Mechanical Properties of Lean Duplex Stainless Steel Bars Prepared by a Short Process

Cited by 3 publications

References 27 publications

Friction taper stitch welding of a duplex stainless steel

Friction taper stitch welding of a duplex stainless steel

Constitutive Modeling for Flow Stress and Processing Maps of a 0.2C–2.0Mn–0.5Cr Microalloyed Steel

Thickness-Dependent Microstructure and its Effect on Anisotropic Mechanical Properties of Duplex Stainless Steel 2205 Multi-pass Welded Joints

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