The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel
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 fr...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2017-09-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | http://www.degruyter.com/view/j/amm.2017.62.issue-3/amm-2017-0262/amm-2017-0262.xml?format=INT |
| _version_ | 1818476750227636224 |
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| author | Šebek M. Falat L. Kováč F. Petryshynets I. Horňak P. Girman V. |
| author_facet | Šebek M. Falat L. Kováč F. Petryshynets I. Horňak P. Girman V. |
| author_sort | Šebek M. |
| collection | DOAJ |
| description | 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%. |
| first_indexed | 2024-12-10T09:29:24Z |
| format | Article |
| id | doaj.art-576d64d6df654f309b49819ede918a11 |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-12-10T09:29:24Z |
| publishDate | 2017-09-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-576d64d6df654f309b49819ede918a112022-12-22T01:54:24ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092017-09-016231721172610.1515/amm-2017-0262amm-2017-0262The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool SteelŠebek M.0Falat L.1Kováč F.2Petryshynets I.3Horňak P.4Girman V.5SLOVAK ACADEMY OF SCIENCES, INSTITUTE OF MATERIALS RESEARCH, KOŠICE, SLOVAKIASLOVAK ACADEMY OF SCIENCES, INSTITUTE OF MATERIALS RESEARCH, KOŠICE, SLOVAKIASLOVAK ACADEMY OF SCIENCES, INSTITUTE OF MATERIALS RESEARCH, KOŠICE, SLOVAKIASLOVAK ACADEMY OF SCIENCES, INSTITUTE OF MATERIALS RESEARCH, KOŠICE, SLOVAKIATECHNICAL UNIVERSITY OF KOŠICE, FACULTY OF METALLURGY, INSTITUTE OF MATERIALS, KOŠICE, SLOVAKIAP.J. ŠAFÁRIK UNIVERSITY IN KOŠICE, DEPARTMENT OF CONDENSED MATTER PHYSICS, INSTITUTE OF PHYSICS, KOŠICE, SLOVAKIAThe 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%.http://www.degruyter.com/view/j/amm.2017.62.issue-3/amm-2017-0262/amm-2017-0262.xml?format=INTHot work tool steellaser hardeningmicrostructurehardnesswear resistance |
| spellingShingle | Šebek M. Falat L. Kováč F. Petryshynets I. Horňak P. Girman V. The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel Archives of Metallurgy and Materials Hot work tool steel laser hardening microstructure hardness wear resistance |
| title | The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel |
| title_full | The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel |
| title_fullStr | The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel |
| title_full_unstemmed | The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel |
| title_short | The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel |
| title_sort | effects of laser surface hardening on microstructural characteristics and wear resistance of aisi h11 hot work tool steel |
| topic | Hot work tool steel laser hardening microstructure hardness wear resistance |
| url | http://www.degruyter.com/view/j/amm.2017.62.issue-3/amm-2017-0262/amm-2017-0262.xml?format=INT |
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