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Open AccessArticle

Wear Resistance of High C High Si Steel with Low Retained Austenite Content and Kinetically Activated Bainite

1
Materials testing department, Institute of Metals and Technology (IMT), Lepi pot 11, SI-1000 Ljubljana, Slovenia
2
Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
3
SIJ Metal Ravne d.o.o., Koroška cesta 14, SI-2390 Ravne na Koroškem, Slovenia
*
Authors to whom correspondence should be addressed.
Metals 2020, 10(5), 672; https://doi.org/10.3390/met10050672
Received: 14 April 2020 / Revised: 18 May 2020 / Accepted: 19 May 2020 / Published: 21 May 2020
(This article belongs to the Special Issue Friction and Wear of Metals)
A novel high C high Si carbide free bainitic steel was developed for the production of cold work tools, knives, and rolls, requiring high hardness, toughness, as well as abrasive/adhesive wear resistance and resistance to galling at low costs. The steel was tribologically tested in dry sliding conditions under abrasive and adhesive wear mode, facilitated by using alumina and bearing steel ball as a counter-material, respectively. It was determined that carbide dissolution occurs under high contact pressures, thereby enriching the surrounding matrix with carbon and locally increasing the retained austenite content. The high retained austenite at the sliding interface increases the steels work hardening capacity and promotes superior wear resistance when compared to much more alloyed cold work tool steel, such as AISI D2. The steel has a high resistance to galling as determined by sliding against a soft steel bar due to its chemical composition. View Full-Text
Keywords: nanostructured bainitic steel; wear resistance; hardening nanostructured bainitic steel; wear resistance; hardening
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MDPI and ACS Style

Podgornik, B.; Brunčko, M.; Kirbiš, P. Wear Resistance of High C High Si Steel with Low Retained Austenite Content and Kinetically Activated Bainite. Metals 2020, 10, 672.

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