The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel

• Autorzy: Šebek M. , Falat L. , Kováč F. , Petryshynets I. , Horňak P. , Girman V.

Identyfikatory

DOI

10.1515/amm-2017-0262

• Języki publikacji: EN

Abstrakty

EN

The present study deals with the effects of laser surface treatment on microstructure evolution and wear resistance of AISI H11 hot work tool steel in quenched and tempered condition. The most upper laser-affected zone is characterized by re-melted microstructure consisting of dendrite cells with fresh non-tempered martensite, retained austenite and inter-dendritic carbidic network. The subsolidus microstructure just beneath the re-melted zone represents the most laser surface hardened zone consisting of fresh non-tempered martensite with fine and coarse carbides as a result of overheating the original QT substrate microstructure. The highest microhardness values in the range from 775 to 857 HV were measured for the LSH microstructure and the most softened microstructure exhibited the minimum hardness of 530 HV. The laser treated samples showed the improvement of their surface wear resistance by 35%.

Słowa kluczowe

EN

hot work tool steel; laser hardening; microstructure; hardness; wear resistance

• 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: 2017
• Tom: Vol. 62, iss. 3
• Strony: 1721--1726
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Šebek M.

• Slovak Academy of Sciences, Institute of Materials Research, Košice, Slovak Republic

autor

Falat L.

• Slovak Academy of Sciences, Institute of Materials Research, Košice, Slovak Republic

autor

Kováč F.

• Slovak Academy of Sciences, Institute of Materials Research, Košice, Slovak Republic

autor

Petryshynets I.

• Slovak Academy of Sciences, Institute of Materials Research, Košice, Slovak Republic

autor

Horňak P.

• Technical University of Košice, Faculty of Metallurgy, Institute of Materials, Košice, Slovak Republic

autor

Girman V.

• P. J. Šafárik University in Košice, Department of Condensed Matter Physics, Institute of Physics, Košice, Slovak Republic

Bibliografia

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Uwagi

EN

This work was financially supported by the projects VEGA 2/0120/15, VEGA 2/0081/16, ITMS 26220220037, ITMS 26220220061 and ITMS 26220220064.

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).