Wear mecahnisms and wear rate in a high temperature dry friction of AISI H11 tool steel: Influence of debris circulation

Barrau, Olivier; Boher, Christine; Gras, R.; Rézaï-Aria, Farhad

doi:10.1016/j.wear.2006.12.032

Cited by 36 publications

(24 citation statements)

References 8 publications

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“…Tribological tests were performed under a normal load of 20 N with a disc rotation speed of 100 rpm (0.13 m/s). The effect of temperature from RT to 950 • C on the friction coefficient evolution and pin wear has been reported elsewhere [24,25]. The attention of this paper is focused on the results of the experiments performed at 700 • C with different test durations (120, 300, 600, 900 and 3600 s of friction) to measure the wear-loss of the pin.…”

Section: High-temperature Pin-on-disc Tribometermentioning

confidence: 97%

A wear model based on cumulative cyclic plastic straining

Boher

Barrau

Gras

et al. 2009

Wear

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a b s t r a c tGiven the specific micro-structure of some steel grades, under tribological conditions the sub-surface material or sub-layers of sliding bodies are prone to cumulative cyclic plastic deformation, leading to the formation and emission of wear debris.In the present paper, a new wear model based on a cyclic ratchetting-type plastic deformation of subsurface material is proposed. It is considered that the debris is formed and the wear-loss occurs when the accumulated plastic deformation at sub-surface exceeds "a critical strain" or "rupture limit". The model takes into account the number of cycles or test duration, a characteristic thickness of the sub-layer dependent on tribological conditions and material properties, the shear rupture ductility and an average plastic strain increment. The average plastic strain increment is estimated by numerical simulation of pinon-disc friction. A very close correlation is found between the predicted and experimental wear heights versus time and/or versus the number of cycles.The wear investigations were carried out on a high-temperature pin-on-disc tribometer under dry friction conditions. Experiments were performed under constant load, speed and disc temperature for different durations. The steel grade involved was a tempered martensitic tool steel X38CrMoV5 (AISI H11). Wear mechanisms were investigated by Scanning Electron Microscopy (SEM) observations in surface and cross-section.

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Section: High-temperature Pin-on-disc Tribometermentioning

confidence: 97%

A wear model based on cumulative cyclic plastic straining

Boher

Barrau

Gras

et al. 2009

Wear

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“…Therefore, the results emphasise mainly the wear mechanisms involved in sliding wear. Barrau et al . tested a martensitic tool steel (AISI H11) against AISI 1018 at various tribological conditions, and for a similar experimental condition tested in this work (700°C, 20 N), the total pin height loss was 55 µm.…”

Section: Resultsmentioning

confidence: 90%

“…Many previous studies tested similar materials and conditions. Therefore, the results emphasise mainly the wear mechanisms involved in sliding wear.…”

Section: Resultsmentioning

confidence: 99%

Effect of molybdenum and chromium contents on sliding wear of high‐chromium white cast iron at high temperature

Pinho

Boher

Scandian

2012

Lubrication Science

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High‐chromium white cast irons are commonly used in applications requiring excellent abrasion resistance, as in the mining and mineral ore processing industry. Their excellent abrasion resistance is mainly due to their solidification microstructures. In this study, 15 experimental high‐chromium white cast alloys containing different chromium and molybdenum contents and a ratio Cr/C of 10 are examined. The wear experiments were carried out on a pin‐on‐disc tribometer at 700°C. Microstructure has the most important role in dictating friction. It was observed that the wear loss was insignificant compared with that obtained at room temperature. The mean friction coefficient was also lower than that observed at room temperature sliding wear. Copyright © 2012 John Wiley & Sons, Ltd.

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“…[38] (Ti,Al)N coatings rely on a stable and protective oxide surface layer to combat against wear. [32,60] The friction coefficient of the hot work tool steel is much smaller, stabilizing at 0.15 after a running-in period of 800 seconds. The low friction coefficient value is linked with the thickness and the adherence of its oxide scale.…”

Section: Resultsmentioning

confidence: 99%

“…[66][67][68] Oxides apparently act as a solid lubricant and also contribute to the enlargement of the wear track, thereby increasing the contact area and decreasing the friction coefficient. [60,69] Loss of strength at 1023 K (750°C), evidenced by hardness measurements, [3] also tends to reduce the friction coefficient.…”

Section: Resultsmentioning

confidence: 99%

High-Temperature Sliding Wear Testing of Cathodic Arc Physical Vapor Deposition AlTiN- and AlTiON-Coated Hot Work Tool Steels

Birol

İsler

Ürgen

2010

Metall Mater Trans A

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Thin hard coatings provide the much needed protection for steel thixoforming tools that must resist wear at high temperatures. The wear resistance of AlTiN-and AlTiON-coated hot work tool steel was investigated at 1023 K (750°C), measured to be the cavity surface temperature shortly after the steel slurry was forced into the thixoforming die. The wear tests were repeated in exactly the same fashion with uncoated tool steel samples to identify the impact of AlTiN and AlTiON coatings on the high-temperature wear performance of X32CrMoV33 tool steel. The nature, the thickness, and the adherence of the oxide scales impact the tribological behavior. The poor adherence and limited ductility of ferrous oxides promote the failure of the oxide scale impairing the resistance to wear of the hot work tool steel at elevated temperatures. The substantial softening in the X32CrMoV33 hot work tool steel is also critical in the wear volume loss it suffers. AlTiN and AlTiON coatings, on the other hand, form a stable and protective oxide surface layer at high temperatures and therefore provide an enhanced resistance to oxidation. The latter is relatively more resistant to oxidation and is thus the better of the two coatings tested in the present work.

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Wear mecahnisms and wear rate in a high temperature dry friction of AISI H11 tool steel: Influence of debris circulation

Cited by 36 publications

References 8 publications

A wear model based on cumulative cyclic plastic straining

A wear model based on cumulative cyclic plastic straining

Effect of molybdenum and chromium contents on sliding wear of high‐chromium white cast iron at high temperature

High-Temperature Sliding Wear Testing of Cathodic Arc Physical Vapor Deposition AlTiN- and AlTiON-Coated Hot Work Tool Steels

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