Microstructure and Mechanical Properties of the Heat Treated Hy-TUF Steel

Abstract:

A study of the high-strength HY-TUF steel applied for the manufacturing of heavy loaded parts was carried out. The mechanical properties of the austempered HY-TUF steel were compared to the characteristics obtained after the conventional oil quenching and tempering. The upper bainite with low impact strength was formed during the austempering at 400 °C and higher. Conventional oil quenching and tempering at temperature 400...500 °С also led to the embrittlement of the steel under consideration. The best combination of toughness and strength of the HY-TUF steel was achieved after the austempering at the temperature of lower bainite formation.

• Periodical: Materials Science Forum (Volume 989)
• Pages: 324-328
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.989.324
• Online since: May 2020
• Authors: Mikhail V. Maisuradze*, Maxim A. Ryzhkov
• Keywords: Austempering, Heat Treatment, Hy-TUF Steel, Mechanical Properties, Microstructure

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