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Effect of prior austenite grain size on the abrasive wear resistance of ultra-high strength martensitic steels

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Effect of prior austenite grain size on the abrasive wear resistance of ultra-high strength martensitic steels. / Haiko, Oskari; Javaheri, Vahid; Valtonen, Kati; Kaijalainen, Antti; Hannula, Jaakko; Kömi, Jukka.

julkaisussa: Wear, Vuosikerta 454-455, 203336, 15.08.2020.

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Haiko, Oskari ; Javaheri, Vahid ; Valtonen, Kati ; Kaijalainen, Antti ; Hannula, Jaakko ; Kömi, Jukka. / Effect of prior austenite grain size on the abrasive wear resistance of ultra-high strength martensitic steels. Julkaisussa: Wear. 2020 ; Vuosikerta 454-455.

Bibtex - Lataa

@article{81ba1f9970b8483f90924f056e6380f6,
title = "Effect of prior austenite grain size on the abrasive wear resistance of ultra-high strength martensitic steels",
abstract = "Prior austenite grain size has a marked effect on the hardenability, strength, and impact toughness properties of steels. This study was conducted in order to understand the effect of prior austenite grain size and morphology on the mechanical properties and abrasive wear performance of an ultra-high strength steel. A commercial quenched 500 HB grade wear-resistant steel was selected for the study: the steel was austenitized at two different temperatures and compared to the original, as-received quenched condition. The resulting mean prior austenite grain size was ranging from 14 μm to 34 μm. The decrease in grain size improved the low-temperature impact toughness properties. A high stress abrasive wear testing method with natural granite abrasives was utilized for the evaluation of abrasive wear resistance. The results suggest that decreasing the prior austenite grain size improves the abrasive wear resistance with similar hardness level martensitic steels. In addition, high-resolution electron backscatter diffraction measurements revealed formation of ultra-fine grain structures in the severely deformed regions of the wear surfaces.",
keywords = "Abrasion, Electron microscopy, Hardness, Steel, Wear testing",
author = "Oskari Haiko and Vahid Javaheri and Kati Valtonen and Antti Kaijalainen and Jaakko Hannula and Jukka K{\"o}mi",
year = "2020",
month = "8",
day = "15",
doi = "10.1016/j.wear.2020.203336",
language = "English",
volume = "454-455",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Effect of prior austenite grain size on the abrasive wear resistance of ultra-high strength martensitic steels

AU - Haiko, Oskari

AU - Javaheri, Vahid

AU - Valtonen, Kati

AU - Kaijalainen, Antti

AU - Hannula, Jaakko

AU - Kömi, Jukka

PY - 2020/8/15

Y1 - 2020/8/15

N2 - Prior austenite grain size has a marked effect on the hardenability, strength, and impact toughness properties of steels. This study was conducted in order to understand the effect of prior austenite grain size and morphology on the mechanical properties and abrasive wear performance of an ultra-high strength steel. A commercial quenched 500 HB grade wear-resistant steel was selected for the study: the steel was austenitized at two different temperatures and compared to the original, as-received quenched condition. The resulting mean prior austenite grain size was ranging from 14 μm to 34 μm. The decrease in grain size improved the low-temperature impact toughness properties. A high stress abrasive wear testing method with natural granite abrasives was utilized for the evaluation of abrasive wear resistance. The results suggest that decreasing the prior austenite grain size improves the abrasive wear resistance with similar hardness level martensitic steels. In addition, high-resolution electron backscatter diffraction measurements revealed formation of ultra-fine grain structures in the severely deformed regions of the wear surfaces.

AB - Prior austenite grain size has a marked effect on the hardenability, strength, and impact toughness properties of steels. This study was conducted in order to understand the effect of prior austenite grain size and morphology on the mechanical properties and abrasive wear performance of an ultra-high strength steel. A commercial quenched 500 HB grade wear-resistant steel was selected for the study: the steel was austenitized at two different temperatures and compared to the original, as-received quenched condition. The resulting mean prior austenite grain size was ranging from 14 μm to 34 μm. The decrease in grain size improved the low-temperature impact toughness properties. A high stress abrasive wear testing method with natural granite abrasives was utilized for the evaluation of abrasive wear resistance. The results suggest that decreasing the prior austenite grain size improves the abrasive wear resistance with similar hardness level martensitic steels. In addition, high-resolution electron backscatter diffraction measurements revealed formation of ultra-fine grain structures in the severely deformed regions of the wear surfaces.

KW - Abrasion

KW - Electron microscopy

KW - Hardness

KW - Steel

KW - Wear testing

U2 - 10.1016/j.wear.2020.203336

DO - 10.1016/j.wear.2020.203336

M3 - Article

VL - 454-455

JO - Wear

JF - Wear

SN - 0043-1648

M1 - 203336

ER -