Degradation processes of two compound layers on nitrided surfaces during the wear test by ‘‘block on hot Al cylinder’’

Lamut, Martin (author), Burja, Jaka (author), Terčelj, Milan (author), Kugler, Goran (author), Bombač, David (author)

The results obtained in the study help to explain the degradation process of the nitrided steel compound layer. Compound layers with different properties on gas-nitrided H10 tool steel blocks were tested for wear with ‘‘block on hot Al cylinder’’. Degradation processes were observed on both compound layers with different properties and at three contact pressures. In order to observe the degradation processes in the compound layers, the wear tests were interrupted at various fixed time intervals and the resulting changes were closely monitored. The comprehensive analysis highlighted the complexity of the degradation process in the compound layers and emphasized the existence of complex relationships between the above-mentioned parameters. The reaction of the nitrided steel surface with hot Al is more pronounced in areas with lower contact pressure, while adhesive removal and furrow formation are pronounced in areas with low and medium contact pressure. This process begins with a sufficient density of the areas where islands of adhesive removal are located, their enlargement during the test, the breaking up of the walls between them, and finally the removal of the compound layer in the sliding direction, which appears as furrowing in the final phase of wear.

• Language: English
• Keywords: wear, nitrided steel, hot-work tool steel, thermal fatigue, aluminium extrusion, tool surface degradation
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: Str. 4006–4027
• Numbering: Vol. 76, no. 8
• PID: 20.500.12556/RUL-159822
• UDC: 669
• ISSN on article: 1047-4838
• DOI: 10.1007/s11837-024-06693-1
• COBISS.SI-ID: 200251907
• Publication date in RUL: 26.07.2024

Record is a part of a journal

• Title: JOM : the journal of The Minerals, Metals & Materials Society (TMS)
• Shortened title: JOM
• Publisher: Springer Nature, The Minerals, Metals & Materials Society
• ISSN: 1047-4838
• COBISS.SI-ID: 6745605

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: obraba, nitrirano jeklo, orodno jeklo za delo v vročem, toplotno utrujanje, ekstruzija aluminija, obraba površine orodja