Influence of heat treatment on the high-temperature oxidation behaviour of chromium-molybdenum-vanadium alloyed hot-work tool steel

Balaško, Tilen (author), Vončina, Maja (author), Burja, Jaka (author), Medved, Jože (author)

The high-temperature oxidation behaviour of chromium-molybdenum-vanadium alloyed hot-work tool steel was investigated. High-temperature oxidation was investigated in two conditions: soft annealed, and quenched and tempered. The samples were oxidised in a chamber furnace and in an instrument for simultaneous thermal analysis, for 100 h in the temperature range be- tween 400 °C and 700 °C. Metallographic analysis (optical and scanning electron microscopy) was performed to study the microstructural changes in the steel and the oxide layer. Oxidation kinetics were analysed by thermogravimetric analysis, and equations were derived from the results. The kinetics can be described by three mathematical functions, namely: exponential, parabolic and cubic. However, which function best describes the kinetics depends on the oxidation temperature and the thermal condition of the steel. Quenched and tempered samples were shown to oxidise less, resulting in a slower oxidation rate.

• Language: English
• Keywords: heat treatment, tool steel, oxidation, thermogravimetric analysis
• 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: 2022
• Number of pages: Str. 233-241
• Numbering: Vol. 56, no. 2
• PID: 20.500.12556/RUL-138213
• UDC: 669.15:539.4.016:621.785
• ISSN on article: 1580-2949
• DOI: 10.17222/mit.2022.406
• COBISS.SI-ID: 104890883

Copyright

Podatek o licenci CC BY 4.0 je naveden na spletnih straneh nadrejene revije – https://mater-tehnol.si/index.php/MatTech/about. (Datum opombe: 20. 5. 2025)

• Publication date in RUL: 13.07.2022

BALAŠKO, Tilen, VONČINA, Maja, BURJA, Jaka and MEDVED, Jože, 2022, Influence of heat treatment on the high-temperature oxidation behaviour of chromium-molybdenum-vanadium alloyed hot-work tool steel. Materiali in tehnologije = Materials and technology [online]. 2022. Vol. 56, no. 2, p. 233–241. [Accessed 2 June 2025]. DOI 10.17222/mit.2022.406. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=138213

Record is a part of a journal

• Title: Materiali in tehnologije = Materials and technology
• Shortened title: Mater. tehnol.
• Publisher: Inštitut za kovinske materiale in tehnologije = Institute of Metals and Technology, Impol, Metal Ravne, Talum, Slovensko društvo za materiale = Slovenian Materials Society
• ISSN: 1580-2949
• COBISS.SI-ID: 106193664

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
• Title: Vpliv toplotne obdelave na visokotemperaturno oksidacijo krom-molibden-vanadij orodnega jekla za delo v vročem

Abstract

Izvedena je bila raziskava visokotemperaturne oksidacije krom-molibden-vanadijevega orodnega jekla za delo v vročem. Raziskave visokotemperaturne oksidacije so bile opravljene na vzorcih jekla v mehko žarjenem stanju in na vzorcih v poboljšanem stanju. Oksidacija vzorcev je potekala 100 ur v komorni peči in v STA (simultana termična analiza) napravi v temperaturnem območju med 400 °C in 700 °C. Identifikacija mikrostrukturnih sprememb v vzorcih in oksidne plasti je bila izvedena z metalografsko analizo (optična in vrstična elektronska mikroskopija). Kinetika oksidacije je bila opazovana s termo-gravimetrično analizo. Iz rezultatov preizkusov so bile izpeljane matematične enačbe za opis visokotemperaturne oksidacijske kinetike. Kinetika se lahko opiše s tremi matematičnimi funkcijami eksponentno, parabolično in kubično. Katera funkcija pa najbolje opisuje kinetiko, je odvisno od temperature oksidacije in toplotnega stanja jekla. Dokazano je, da poboljšani vzorci manj oksidirajo, kar ima za posledico počasnejšo hitrost oksidacije.

• Keywords: toplotna obdelava, orodno jeklo, oksidacija, termo-gravimetrična analiza