Surface layer characterization of 2205 duplex stainless steel subjected to abrasive water jet descaling

Liu, Jiawei; Han, Jingtao; Lu, Ruilong; Wang, Yu; Liu, Cheng

doi:10.1016/j.mtcomm.2023.105872

Cited by 2 publications

(1 citation statement)

References 40 publications

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“…As the jet pressure increases, the residual compressive stress, and the density of defects such as dislocations, phase boundaries and laminations increases in the surface layer of the AWJ specimens, while more deformation-induced martensitic transformation occurs. These changes cause dislocation motion to be impeded and the microhardness and wear resistance of the surface layer of the AWJ specimen to increase [35].…”

Section: Microhardnessmentioning

confidence: 99%

Effect of abrasive water pressure on the surface layer characteristics of duplex stainless steel 2205

Liu

Wang

et al. 2023

Mater. Res. Express

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The martensitic stainless steel shot with a high number of cycles was applied to the abrasive water jet (AWJ) to study the effect of jet pressures on the surface layer characteristics of 2205 duplex stainless steel. The Almen strips (type A) quantitatively evaluate the AWJ intensity at jet pressures of 50 MPa, 60 MPa, and 70 MPa. The surface layer characteristics were comprehensively studied using scanning electron microscopy, laser scanning confocal microscopy, X-ray diffraction, electron backscatter diffraction techniques, and microhardness tester. It was found that with the increase of the jet pressure from 50 MPa to 60 MPa and 70 MPa, the AWJ intensity increased by 5.0% and 22% and the surface roughness for Ra increased by 16% and 37%. Residual compressive stresses existed in both phases to a depth of more than 200 μm. The austenite hardening rate is higher than that of ferrite, and the maximum residual compressive stress in austenite of the surface layer of the AWJ specimen occurred at the subsurface. The maximum residual compressive stress in ferrite occurred at the surface (50 MPa, 60 MPa) and subsurface (70 MPa). The hetero-deformation induced stresses formed during the plastic deformation of the heterostructured material made the austenitic residual compressive stresses in the surface layer slightly higher than those in ferrite. The surface grain refinement depth exceeded 150 μm, and the degree of austenite grain refinement was higher than that of ferrite. The fraction of deformation-induced martensite and the depth of phase transformation increased with the increase of jet pressure. These changes caused the surface hardening of the specimen, and the jet pressure had a significant effect on the depth of the hardened layer and the microhardness at depth greater than 50 μm.

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Section: Microhardnessmentioning

confidence: 99%

Effect of abrasive water pressure on the surface layer characteristics of duplex stainless steel 2205

Liu

Wang

et al. 2023

Mater. Res. Express

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Multi-objective optimization integrating weighted average surrogate model and NSGA-II intelligent algorithm applied to a self-excited oscillation mixer used in mixed flow descaling

Nie,

Cai,

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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This study proposes a multi-objective optimization method based on a hybrid of computational fluid dynamics (CFD) and experimental techniques, which integrates a weighted average surrogate model and the NSGA-II intelligent algorithm. To validate the feasibility of this method, structural optimization for the self-excited oscillation mixer (SEOM) was conducted. The optimization objectives aimed to reduce potential abrasives accumulation in the mixed-flow cavity and minimize erosion on the elbow of the slurry outlet caused by mixed slurry, thereby enhancing the service life and rust removal efficiency of the mixed flow rotary jet descaling (MFD). A comparison between the optimized model and original model revealed a 2.51% increase in negative pressure within the cavity of the optimized model, as well as a 10.36% decrease in velocity at the outlet of mixed slurry based on simulation results. Experimental methods measured both mass flow rate of inhaled abrasive particles and impact force of mixed slurry outlet. The experimental results demonstrated that compared to its original counterpart, the optimized model exhibited superior performance with a 22.81% increase in abrasive particle flow rate and an 11.34% reduction in mixed slurry impact force indirectly, verifying better simulation effectiveness for SEOM with optimized structure. This approach also enhanced efficiency and surface quality of MFD processing strip steel, providing guidance for structural optimization of similar SEOMs used in mixed flow descaling.

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Surface layer characterization of 2205 duplex stainless steel subjected to abrasive water jet descaling

Cited by 2 publications

References 40 publications

Effect of abrasive water pressure on the surface layer characteristics of duplex stainless steel 2205

Effect of abrasive water pressure on the surface layer characteristics of duplex stainless steel 2205

Multi-objective optimization integrating weighted average surrogate model and NSGA-II intelligent algorithm applied to a self-excited oscillation mixer used in mixed flow descaling

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