Residual stress and surface microhardness post-milling in 2205 duplex steel

Santos, Carlos Eduardo dos; Carneiro, José Rubens Gonçalves; Silva, Gilmar Cordeiro da; Brito, Pedro; Santos, Ítalo Bruno dos; Campos, Thais Roberta

doi:10.1007/s00170-021-06829-6

Cited by 4 publications

(3 citation statements)

References 31 publications

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“…Although the value was less than that in the austenite phase, the AlTiN-coated insert likewise generated the highest tensile residual stress in the ferrite phase. This is because the ferrite phase had a lower thermal expansion coefficient and a higher yield strength than the austenite phase, which made it less susceptible to thermal and plastic deformation [42]. Comparable levels of tensile residual stress in the ferrite phase were observed in the other two coated inserts.…”

Section: Machined Surface Characterizationmentioning

confidence: 99%

Investigating the Impact of Physical Vapour Deposition (PVD)-Coated Cutting Tools on Stress Corrosion Cracking Susceptibility in Turning Super Duplex Stainless Steel

Locks,

He,

DePaiva

et al. 2024

Coatings

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This work aimed to ascertain the corresponding influences of several PVD-coated cutting tools on the susceptibility of the machined surface of super duplex stainless steel (SDSS) to stress corrosion cracking. Coatings comprised of AlCrN, AlCrN/TiSiN, and AlTiN were applied to cemented carbide cutting tools using the PVD method; these were then used to turn the outer surface of the SDSS tube section. During the cutting process, the material presents the following combination of features: (i) a tendency for strain hardening, reflected in microstructural modifications and residual stresses of the machined surface and (ii) high temperatures in the cutting region, reducing the tool life. The goal of this work was to evaluate the surface integrity (work hardening and corrosion behaviour) of the SDSS obtained after the machining process (finish turning) with cemented carbide tools coated with three different PVD coatings.

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Section: Machined Surface Characterizationmentioning

confidence: 99%

Investigating the Impact of Physical Vapour Deposition (PVD)-Coated Cutting Tools on Stress Corrosion Cracking Susceptibility in Turning Super Duplex Stainless Steel

Locks,

He,

DePaiva

et al. 2024

Coatings

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“…He used different methods of regression analysis in carrying out this process. The residual stress formation in the subsurface layers of such difficult-to-machine materials as duplex steel and titanium alloy Ti-6Al-4V as a result of the cutting process was studied by dos Santos and colleagues [29] and Rangasamy et al [30]. A considerable amount of research on the mechanical characteristics of surface layers machined by cutting is devoted to the analysis of the machined material microstructure and the cutting process conditions' influence on it, as found in [31].…”

Section: Brief Description Of the State Of The Art On The Determinati...mentioning

confidence: 99%

Generation of Mechanical Characteristics in Workpiece Subsurface Layers through Milling

Storchak,

Hlembotska,

Melnyk

2024

Materials

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The generation of mechanical characteristics in workpiece subsurface layers as a result of the cutting process has a predominant influence on the performance properties of machined parts. The effect of the end milling process on the mechanical characteristics of the machined subsurface layers was evaluated using nondestructive methods: instrumented nanoindentation and sclerometry (scratching). In this paper, the influence of one of the common processes of materials processing by cutting—the process of end tool milling—on the generation of mechanical characteristics of workpiece machined subsurface layers is studied. The effect of the end milling process on the character of mechanical property formation was evaluated through the coincidence of the cutting process energy characteristics with the mechanical characteristics of the machined subsurface layers. The total cutting power and cutting work in the tertiary cutting zone area were used as energy characteristics of the end milling process. The modes of the end milling process are considered as the main parameters affecting these energy characteristics. The mechanical characteristics of the workpiece machined subsurface layers were the microhardness of the subsurface layers and the total work of indenter penetration, determined by instrumental nanoindentation, and the maximum depth of indenter penetration, determined by sclerometry. Titanium alloy Ti10V2Fe3Al (Ti-1023) was used as the machining material. Based on the evaluation of the coincidence of the cutting process energy characteristics with the specified mechanical characteristics of the machined subsurface layers, the milling mode effect of the studied titanium alloy, in particular the cutter feed and cutting speed, on the generated mechanical characteristics was established.

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“…In this study, a typical elastic-plastic metal material 20Cr and a typical material TC17 for aerospace manufacturing were used. Based on the above previous research results, this paper referred to relevant studies on the optimization of milling parameters [12,13], and the effect of milling parameters on the degree of machined surface plastic deformation [14,15], different milling machining conditions were used to form different surface plastic deformation of 20Cr and TC17 specimens. The high-and low-cycle fatigue performances were tested on the premise that the surface micro-topography and surface residual stress were basically the same.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Milling Surface Plastic Deformation on Fatigue Performance of 20Cr and TC17 Specimens

Zhang

Yang

et al. 2022

Metals

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In addition to the micro-topography of machined surfaces, plastic deformation is an important factor affecting the machined surface integrity and the fatigue performance of specimens. For 20Cr and TC17 materials, the effect law of milling surface plastic deformation on high- and low-cycle fatigue performance of specimens was studied. Experimental results show that the effect law of milling surface plastic deformation on high- and low-cycle fatigue performance of specimens is different. When the high-cycle fatigue life is about 2 × 105 cycles, severe surface plastic deformation can increase the maximum stress suffered by TC17 specimens from 1060 MPa to 1080 MPa; when the low-cycle fatigue life is about 6 × 104 cycles, severe surface plastic deformation can reduce the maximum stress suffered by 20Cr specimens from 680 MPa to 660 MPa. Therefore, severe surface plastic deformation can improve the high-cycle fatigue performance and, on the contrary, it has a negative effect on the low-cycle fatigue performance. Combined with the analysis of the surface integrity index and the fatigue fracture topography of specimens, it is concluded that the machined surface plastic deformation significantly reduces the plastic deformation capacity of surface layer material and enhances the stress concentration phenomenon caused by the surface micro-topography, so that when a specimen is subjected to a large load, it is very easy to make microcracks appear on the machined surface and form the “over-plastic deformation” phenomenon, resulting in a sharp decrease in the low-cycle fatigue performance of specimens. This suggests that the plastic deformation degree of machined surfaces needs to be optimized depending on the magnitude of the working load and the micro-topography.

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Residual stress and surface microhardness post-milling in 2205 duplex steel

Cited by 4 publications

References 31 publications

Investigating the Impact of Physical Vapour Deposition (PVD)-Coated Cutting Tools on Stress Corrosion Cracking Susceptibility in Turning Super Duplex Stainless Steel

Investigating the Impact of Physical Vapour Deposition (PVD)-Coated Cutting Tools on Stress Corrosion Cracking Susceptibility in Turning Super Duplex Stainless Steel

Generation of Mechanical Characteristics in Workpiece Subsurface Layers through Milling

Study on the Effect of Milling Surface Plastic Deformation on Fatigue Performance of 20Cr and TC17 Specimens

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