Comparing the tribological behaviour of an austenitic steel subjected to diverse thermal treatments

Garcı́a, Ana; Varela, Á.; García, L.; Río, M.C.; Naya, Salvador; Suarez, Mauro Paipa

doi:10.1016/j.wear.2004.09.003

Cited by 12 publications

(9 citation statements)

References 6 publications

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“…This hardening was due to the formation of new constituents, which is studied in the metallographic analysis of the samples. The first hardening can be explained by the same mechanisms as those occurring in the tempering of high-strength steels: the appearance of fine carbide precipitates which coalesce when the temperature is increased [26]. As shown in Figure 3, castings with a high transformation of austenite in other constituents were removed to better observe the general behavior of manganese steels [25], otherwise their properties would be similar to those of non-deformable tool steels.…”

Section: Hardnessmentioning

confidence: 99%

Microstructural Analysis and Tribology Behavior of a Medium-Mn Steel with Mo

López

García-Diez

Buenhombre

et al. 2018

Metals

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This paper presents an alternative to the materials traditionally used in the manufacture of coal mills for coating wedges. For this purpose, we designed and tested ten new austenitic steels with medium manganese content. The thermal structural stability and hardness were evaluated after different heat treatments. The steels were subjected to hyperquenching and tempering between 100 and 900 °C. A metallographic analysis of each sample was then performed to determine their thermal stability, and the Brinell hardness was measured. Later, wedges of two alternatives and reference-material alloys were manufactured and installed in three types of mills. Their mass loss was determined after 25 months and at an intermediate time during that period. One steel was selected as an alternative material.

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Section: Hardnessmentioning

confidence: 99%

Microstructural Analysis and Tribology Behavior of a Medium-Mn Steel with Mo

López

García-Diez

Buenhombre

et al. 2018

Metals

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“…The presence of impact is important because deformation is a necessary prerequisite for the workhardening of Hadfield steels. The wear resistance of Hadfield steels is mainly the result of the phase transformation of austenite into martensite, which occurs on a thin layer of the surface of the material; Hawk (2001), Garcia et al (2005).…”

Section: Introductionmentioning

confidence: 99%

Assessing Wear Performance of Two High-carbon Hadfield Steels Through Field Tests in the Mining Industry

Lencina

Caletti

Brunelli

et al. 2015

Procedia Materials Science

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Hadfield steels are widely used in the production of liners for rock crushing applications due to their good wear resistance and high toughness. Because of the high replacement frequency and cost of these liners, improvements in the properties of Hadfield steels may represent a great economic benefit for mining operators. Therefore, correctly assessing wear performance is a relevant matter in the research and development activities regarding Hadfield steels. However, conventional laboratory tests may not accurately mimic the conditions of impact and gouging abrasion occurring in crushing applications. Field tests may represent a complementary source of information particularly useful in the optimization of Hadfield steels. In this work, the wear performance of two Hadfield steels was investigated through field testing. Their characteristics included high carbon content and two different levels of manganese content. Two sites were chosen for the assessment: a pebble crushing plant and an aggregate plant. The first site presented very hard material and compression crushing conditions, whereas the second site presented impact crushing conditions. The use of field tests allowed comparing wear ratios between both steels and it also permitted to identify critical issues constraining steels performance, such as microstructure embrittlement. Despite some limitations, the results from the field tests demonstrated that better wear performance was associated with higher manganese content.

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“…Indeed Hadfield steel is a remarkable engineering alloy which in fully solutionized form is soft and ductile but when deformed, it work hardens rapidly. Work hardening mechanisms, impact wear, abrasive wear and the alloying of austenitic manganese steel have been investigated by several researchers and results have shown that under repeated impact and abrasive wear it work hardens rapidly and displays remarkable toughness [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] . Several other works on its surface treatment have also proved that surface treatment increases its surface hardness and wear resistance [22][23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

Workhardening behaviour and microstructural analysis of failed austenitic manganese steel crusher jaws

2013

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This study focussed on the work hardening behaviour and microstructure of austenitic manganese steel relative to premature failure of crusher jaws. Samples of sound and failed crusher jaws were taken, the change with depth from the working surface to the sample core was measured and their microstructures observed. The study revealed a sharp hardness gradient in the failed crusher jaws, and presence of large carbides at both the austenite grain boundaries and in the austenite matrix. The failure of crusher jaws was attributed to brittle fracture as a result of precipitates of carbides from the inability of precipitated carbides to absorb shock during impact working. Finally, we conclude that the failure occurred as a result of inadequate quenching operations during the manufacturing process that resulted in the formation of carbide precipitates which embrittle the austenitic manganese steel, reduce its ability to withstand shock and create a non uniform plastic flow as it is work hardening.

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Comparing the tribological behaviour of an austenitic steel subjected to diverse thermal treatments

Cited by 12 publications

References 6 publications

Microstructural Analysis and Tribology Behavior of a Medium-Mn Steel with Mo

Microstructural Analysis and Tribology Behavior of a Medium-Mn Steel with Mo

Assessing Wear Performance of Two High-carbon Hadfield Steels Through Field Tests in the Mining Industry

Workhardening behaviour and microstructural analysis of failed austenitic manganese steel crusher jaws

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