Improvement of the hot work tool steel surface layers properties using a high power diode laser

• Autorzy: Dobrzański L. A. , Piec M. , Klimpel A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of this research paper is focused on the X38CrMoV5-3 hot work tool steel surface layers properties using HPDL laser. Design/methodology/approach: The aim of this research paper is to present deposition technologies, investigation of structure and properties of the X38CrMoV5-3 hot work tool steel alloying with ceramic particles using high power diode laser HPDL. Selection of laser operating conditions is discussed, as well as beam face quality after remelting, hardness, micro hardness test, wear resistant, EDX, TEM and X-ray microanalysis results. Findings: The structure of the solidified material after the laser remelting is characterized by the diversified morphology connected with the multiple changes of the crystal growth direction from little dendrites to tiny equiaxed grains in the near-surface zone. The main axes of the dendrites are directed according to the heat abstraction directions on the border of the solid and liquid phases with the carbides' clusters arranged according to the whirls caused by a convectional movement in the pool of the metallic liquid as well as partly unremelted conglomerates NbC, TaC, VC, WC and TiC as a melting material in the middle area of the remelted zone. Research limitations/implications: Laser technique features the especially promising tool for solving the contemporary surface engineering problems thanks to the physical properties of the laser, making it possible to focus precisely the delivered energy in the form of heat in the surface layer. Practical implications: Practical implications are: regeneration and manufacturing of various tools from the X38CrMoV5-3 hot-work tool steel. Originality/value: The laser treatment as a part of the new generation techniques applied in metal surface technology.

Słowa kluczowe

EN

properties improvement; surface layer; HPDL laser; ceramic particles; hot work tool steel

PL

doskonalenie właściwości; warstwa wierzchnia; laser diodowy dużej mocy; cząstki ceramiczne; stal narzędziowa do pracy na gorąco

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 21, nr 1
• Strony: 13--22
• Opis fizyczny: Bibliogr. 19 poz., fot., rys., tab.

Twórcy

autor

Dobrzański L. A.

autor

Piec M.

autor

Klimpel A.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland,

Bibliografia

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