The influence of laser surface alloying on the thermal fatigue resistance of hot work tool steels

• Autorzy: Jonda E. , Brytan Z. , Labisz K. , Drygała A.

Identyfikatory

DOI

10.1515/amm-2016-0216

• Języki publikacji: EN

Abstrakty

EN

The paper presents results of the effect of laser surface remelting and alloying by carbides powders of NbC, TaC, TiC, VC and WC on the structure and thermal fatigue resistance of the surface layer of hot work tool steels X40CrMoV5-l and 32CrMoV12-28. The laser surface alloying and remelting treatments was performed using a high power diode laser (HPDL ROFTN SLNAR DL 020). In order to investigate the effect of applied laser treatments and used alloying powders on the microstructure and thermal fatigue resistance of processed surface layer of hot work tool steels, the inicrostructure evaluation by light microscopy, hardness test, and dedicated thermal fatigue resistance test were performed. The best results regarding fatigue cracks inhibition was obtained when the surface of hot work tool steels was alloyed with TiC and VC carbides at the laser beam power of 2.0 and 2.3 kW. The grain refinement effect of laser remelting has a lower impact on the thermal crack inhibition, than a strong strengthening effect of matrix saturation in alloying elements and precipitation of fine carbides in the steel matrix.

Słowa kluczowe

EN

hot work tool steel; laser surface remelting; laser surface alloying; thermal fatigue

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2016
• Tom: Vol. 61, iss. 3
• Strony: 1309--1314
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Jonda E.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Engtneertng, 18A Konarsktego str., 44-100 Gliwice, Poland

autor

Brytan Z.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Engtneertng, 18A Konarsktego str., 44-100 Gliwice, Poland

autor

Labisz K.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Engtneertng, 18A Konarsktego str., 44-100 Gliwice, Poland

autor

Drygała A.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Engtneertng, 18A Konarsktego str., 44-100 Gliwice, Poland

Bibliografia

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Uwagi

EN

The author gratefully acknowledges the financial support from the National Science Centre granted based on the decision number DEC-2011/01/B/ST8/06648. Tins publication was co-financed by the Ministry of Science and Higher Education of Poland as the statutory financial grant of the Faculty of Mechanical Engineering SUT