Initiation of Sticking during Hot Rolling of Stainless Steel Plate

Dubois, A.; Luc, Emilie; Dubar, Mirentxu; Dubar, Laurent; Thibaut, Céline; Damasse, Jean-Michel

doi:10.1016/j.proeng.2014.10.264

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…3(d)). This is the main reason that caused the sticking problem in the hot forming of ST, i.e., the direct contact between the metal base and tool surface [33,34]. The ST adhering to the HSS ball underwent significant plastic deformation, and plastic flow occurred toward the edge of the contact zone owing to the pressure gradient in the contact zone (Fig.…”

Section: Summary Of Wear Mechanismsmentioning

confidence: 99%

Tribological behavior comparisons of high chromium stainless and mild steels against high-speed steel and ceramics at high temperatures

et al. 2021

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High-temperature tribology, which is often involved during hot metal forming, is controlled via oxidation on a rubbing surface. However, for high chromium stainless steel (ST), where oxidation is strongly inhibited, the effect of counterface materials on tribological behavior is yet to be elucidated. In this study, the effects of counterfaces on the tribological behavior of 253MA ST and mild steel (MS) are investigated via a ball-on-disc test at 900 °C using a 20 N load. The results reveal that high-speed steel (HSS) experiences severe abrasive wear with MS and causes severe sticking problems with ST. Si3N4 and SiC present substantially stronger abrasive wear resistance than HSS with MS, and the friction coefficients are dependent on the type of ceramic. Both ceramics can facilitate the establishment of a thick tribo-oxide layer (> 3 µm) on ST to prevent sticking; however, this is accompanied by severe pull-out and fracture wear. The effects of the counterface on the mechanical properties of the tribo-oxide layer, near-surface transformation, and the responses of the tribo-oxide layer to friction and wear are discussed. This study contributes to the understanding of interfacial tribological behaviors when different types of tools are used on MS and ST.

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Section: Summary Of Wear Mechanismsmentioning

confidence: 99%

Tribological behavior comparisons of high chromium stainless and mild steels against high-speed steel and ceramics at high temperatures

et al. 2021

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“…Step 1 is related to the data acquisition of the main mechanical and physical parameters to be simulated on the friction test. Depending if the forming process is cold or hot, step 1 provides at least the values of sliding velocities, tool and workpiece temperatures, contact pressure, strain rate, plastic strain and surface enlargement [7][8][9]. Other data, such as lubricant film thickness, presence of oxide scale and forming load can also be acquired.…”

Section: Methodsmentioning

confidence: 99%

Friction and Wear in Metal Forming: 25 Years at LAMIH UMR CNRS 8201

Dubar

Dubois

Dubar

2018

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Since the beginning of the 90’s, research activities focused on friction and wear in metal forming have been developed at the LAMIH UMR CNRS 8201 in Valenciennes. Specific methodologies have been designed to optimize a given forming process (bulk forming process or sheet forming process). These methodologies involve prototype benches which have been built to reproduce contact conditions encountered in manufacturing plants by taking specimens and contactors from the real industrial workpieces and tools. The evaluation of the friction coefficient added to the fine analysis of the surfaces have helped us to better understand friction and wear during processes. These facilities have been settled by numerical simulation at meso and macro scales by means of finite element methods. So, this paper is the sum up of the output of these methodologies with a specific focus on wear and lubrication, at room and hot temperatures.

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“… 10 , 11 Therefore, many engineers have tried to explain the fundamental mechanisms 12 , 13 and address the sticking failure problem with empirical control of alloying elements, 9 structural analysis, 11 processing parameter controls, 10 and replication of hot-rolling processes. 14 Kim et al 15 suggested failure mechanisms with different types of commercial STSs on the basis of an ex situ elemental image analysis of the microstructure of the scale and the exposed fractured surface. However, a real-time investigation of sticking failure is required to determine the failure process in terms of the crack initiation position, preferable cracking path, and delamination.…”

Section: Introductionmentioning

confidence: 99%

“…However, during the hot rolling of ferritic STSs with a high Cr content, oxide flakes form and stick to the rollers, deteriorating the surface of the STSs. , Because the surface quality is critical, STSs with indented surfaces have significantly diminished value. , Therefore, many engineers have tried to explain the fundamental mechanisms , and address the sticking failure problem with empirical control of alloying elements, structural analysis, processing parameter controls, and replication of hot-rolling processes . Kim et al suggested failure mechanisms with different types of commercial STSs on the basis of an ex situ elemental image analysis of the microstructure of the scale and the exposed fractured surface.…”

Section: Introductionmentioning

confidence: 99%

In SituScanning Electron Microscopy Analysis of the Interfacial Failure of Oxide Scales on Stainless Steels and Its Effect on Sticking during Hot Rolling

et al. 2022

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Despite various strategies to address sticking failure in stainless steels (STSs), difficulties in understanding its fundamental mechanisms hinder precise solutions during STS fabrication. This study investigated the effect of chromium (Cr) content on the microstructures and failure modes of oxide scales under a tensile load, simulating the hot-rolling process. The dynamic, real-time behavior of crack initiation, propagation, and interfacial delamination in the oxide scales under tension was analyzed using an in situ scanning electron microscopy (SEM) tensile test. With a high Cr content, iron (Fe) oxide and chromium(III) oxide (Cr 2 O 3 ) form a layered structure, which is delaminated along the interfaces between the thin Cr 2 O 3 layer and the bulk after perpendicular cracking. The saturated crack densities obtained from in situ SEM provide interfacial strength, while the elastic modulus and hardness obtained from nanoindentation provide vertical fracture strength. In combination with an ex situ elemental image analysis, the in situ SEM results reveal three different failure modes of the four different STSs. The results confirm that sticking failure is more likely to occur as the Cr content increases.

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Initiation of Sticking during Hot Rolling of Stainless Steel Plate

Cited by 8 publications

References 9 publications

Tribological behavior comparisons of high chromium stainless and mild steels against high-speed steel and ceramics at high temperatures

Tribological behavior comparisons of high chromium stainless and mild steels against high-speed steel and ceramics at high temperatures

Friction and Wear in Metal Forming: 25 Years at LAMIH UMR CNRS 8201

In SituScanning Electron Microscopy Analysis of the Interfacial Failure of Oxide Scales on Stainless Steels and Its Effect on Sticking during Hot Rolling

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