The analysis of phase transformation of undercooled austenite and selected mechanical properties of low-alloy steel with boron addition

• Autorzy: Łętkowska B. , Dziurka R. , Bała P.

Identyfikatory

DOI

10.1016/j.acme.2014.08.001

• Języki publikacji: EN

Abstrakty

EN

The paper presents continuous cooling transformation (CCT) diagram of selected low-alloy boron steel with high resistance to abrasion. Tests were performed on samples with dimensions of Ø 3 mm × 10 mm. Samples were prepared from examined material in as – delivery conditions, then were austenitized at 930 °C for 20 min, and then cooled with the rates of V800-500 = 0.17, 0.33, 1, 5, 10, 25 and 47 °C/s. During the dilatometric research, the critical temperatures were defined as well as the critical points specified for different cooling rates were designated. In addition, metallographic documentation of received microstructures after dilatometric investigations was prepared and hardness measurement was performed. Moreover, examinations of the basic parameters of strength, impact test and abrasion resistance test were performed and a tendency to brittle fracture was analyzed. The studies show big differences of the analyzed parameters depending on the applied heat treatment, which should provide guidance to users to specific applications of this type of steel.

Słowa kluczowe

EN

low-alloy steels with boron; abrasive wear; heat treatment; CCT diagrams

PL

obróbka cieplna; zużycie ścierne; stal niskostopowa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2015
• Tom: Vol. 15, no. 2
• Strony: 308--316
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Łętkowska B.

• Wroclaw University of Technology, Department of Materials Science, Welding and Strength of Materials, Smoluchowskiego Street 25, 50-370 Wrocław, Poland

autor

Dziurka R.

• AGH University of Science and Technology, Department of Physical & Powder Metallurgy, Mickiewicza Avenue 30, 30-059 Kraków, Poland

autor

Bała P.

• AGH University of Science and Technology, Department of Physical & Powder Metallurgy, Mickiewicza Avenue 30, 30-059 Kraków, Poland

Bibliografia

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• [3] http://www.zerneri.com/english/aboro.htm. Information materials of ironworks Zerneri Acciai Spa.
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• [9] P. Kostencki, B. Łętkowska, R. Nowowiejski, Polowe badania odporności na zużycie ścierne lemieszy podłużnych wykonanych ze stali z dodatkiem boru, Tribologia 44 (3) (2013) 49–79.
• [10] M. Kazemipour, H. Shokrollahi, Sh. Sharafi, The influence of the matrix microstructure on abrasive wear resistance of heat-treated Fe–32Cr–4.5C wt% hardfacing alloy, Tribology Letters 39 (2010) 181–192.