Galling mechanisms during interaction of tool steel and Al–Si coated ultra-high strength steel at elevated temperature

Pelcastre, Leonardo; Hardell, Jens; Prakash, Braham

doi:10.1016/j.triboint.2013.08.007

Cited by 60 publications

(51 citation statements)

References 16 publications

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“…To ameliorate the surface deterioration in hot stamping tools, it is necessary to achieve a more in-depth understanding of wear failure mechanisms [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Wear and Friction Evaluation of Different Tool Steels for Hot Stamping

Muro

Artola

Gorriño

et al. 2018

Advances in Materials Science and Engineering

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e aim of this work is to investigate the durability of tool steels for hot stamping by comparing the wear resistance of three hot work tool steels. Friction and wear behaviours of different tool steels sliding against a 22MnB5 uncoated steel at elevated temperatures were investigated using a high-temperature version of the Optimol SRV reciprocating friction and wear tester at temperatures of 40 and 200°C. Our results show that friction decreased with increasing temperature, whereas wear of the tool steel increased with temperature for the second and the third tested tool steels. e slightly better wear behaviour of steel specimen 1 comes from the hardness of the carbides in the martensitic microstructure, which are rich in vanadium.

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“…To ameliorate the surface deterioration in hot stamping tools, it is necessary to achieve a more in-depth understanding of wear failure mechanisms [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Wear and Friction Evaluation of Different Tool Steels for Hot Stamping

Muro

Artola

Gorriño

et al. 2018

Advances in Materials Science and Engineering

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“…The same research team [36] developed a phenomenological model to explain the galling mechanisms encountered during interaction between an uncoated tool steel and Al-Si coated UHSS. The authors noted the formation of compacted oxidized wear debris for the development of glaze layers, which significantly reduced the occurrence of galling.…”

Section: Oxide In Hot Stamping Processmentioning

confidence: 99%

“…By the 2010s, the authors were convinced that formation of compacted layers at contact surface [41] significantly reduced the occurrence of galling [36] and modified friction conditions. These compacted layers were named tribo-layers [42,43] or glaze layers [44−47].…”

Section: Formation Of Compacted Layers (Glaze Layers)mentioning

confidence: 99%

“…In high temperature friction during tribological tests associated with the studies on rolling [24], forging [48], and hot stamping [36], it was often shown that the development of layers at the interface of two materials contributed to the reduction of friction and wear rate. The stability of the friction factor was often associated with the transition of metal/metal contact (or metal/ oxide) to an oxide/oxide contact.…”

Section: Formation Of Compacted Layers (Glaze Layers)mentioning

confidence: 99%

“…Al-Si coating is usually applied on high strength steel sheets to eliminate such problem. Hardell et al investigated the tribological characteristics of Al-Si coated high strength steel against different tool steels at temperatures up to 800 °C [7,[34][35][36]56]. This research group observed that Al-Si coating reduced friction at elevated temperatures.…”

Section: Tribological Effect Of Surface Coatings At Elevated Temperatmentioning

confidence: 99%

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Tribology in metal forming at elevated temperatures

et al. 2015

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Abstract:The tribo-characteristics of metal forming at high temperatures have not yet been well understood due to the complex nature of thermal, microstructural, interaction, and process parameters. This is a review paper on the effects of temperature, coating, and lubrication to the tribological characteristics in hot forming as well as the tribometers for different metal forming processes at elevated temperatures mainly based on the experimental work. The tribological behaviors of oxides in hot forming, such as rolling and stamping, were reviewed and presented. Some commonly used surface coatings and lubricants in hot forming were given. Many types of tribometer were selected and presented and some of them provided a great potential to characterize friction and wear at elevated temperatures. Nevertheless, more testing conditions should be further investigated by developing new tribometers. Eventually, experimental results obtained from reliable tribometers could be used in theory and model developments for different forming processes and materials at high temperatures. The review also showed the great potential in further investigations and innovation in tribology.

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Properties of Tool Steels for Application in Hot Stamping

Niederhofer

Eger

Schwingenschlögl

et al. 2019

steel research int.

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Hot stamped high-strength steel components for car bodies become increasingly important due to the need to save weight for multiple reasons such as fuel conservation regulations. Tribological systems in tools for hot stamping depend on process parameters and may include, e.g., mechanical and thermal loads as well as adhesive and abrasive wear. Furthermore, the process cycle time should be as short as possible due to economic reasons. Commonly used hot work tool steels mainly suffer from rather low wear resistance, whereas in terms of process cycle time, a high thermal conductivity is desired. Thus, solutions showing optimized combination of key properties for application in hot stamping such as wear resistance, high thermal conductivity, toughness, and hardening behavior need to be found. In this contribution, novel high thermal conductivity hot work tool steels, especially designed for application in hot stamping, are presented and some key properties are compared, e.g., to those of conventional hot work tool steels like 1.2367, which is commonly used in this application. Furthermore, tribological investigations are performed in laboratory tests according to ASTM G65 and G75 as well as a flat strip-drawing test setup using sheets of 22MnB5 under hot stamping conditions.

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Galling mechanisms during interaction of tool steel and Al–Si coated ultra-high strength steel at elevated temperature

Cited by 60 publications

References 16 publications

Wear and Friction Evaluation of Different Tool Steels for Hot Stamping

Wear and Friction Evaluation of Different Tool Steels for Hot Stamping

Tribology in metal forming at elevated temperatures

Properties of Tool Steels for Application in Hot Stamping

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