Mechanical properties and structure changes of the laser alloyed 32CrMoV12-28 steel

• Autorzy: Dobrzański, L. A. , Labisz, K. , Klimpel, A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The reason of this work was to determine the laser treatment parameters, particularly the laser power, to achieve a high value of layer hardness for protection of this hot work tool steel from losing their work stability and to make the tool surface more resistant for work. The purpose of this work was also to determine technological and technical conditions for remelting the surface layer with HPDL. Design/methodology/approach: In this paper the results of new laser treatment techniques applied in metal surface technology are presented and discussed. There is presented laser treatment with remelting of hot work tool steel 32CrMoV12-28 with ceramic powders especially carbide - TaC, as well as results of laser remelting influence on structure and properties of the surface of the hot work steel, carried out using the high power diode laser (HPDL). Special attention was devoted to monitoring of the layer morphology of the investigated material and on the particle occurred. Optical and scanning electron microscopy was used to characterize the microstructure and intermetallic phases occurred. Findings: The layer is without cracks and defects as well as has a considerably higher hardness value compared to the non remelted material. The hardness value increases according to the laser power used so that the highest power applied gives to highest hardness value in the remelted layer. Research limitations/implications: The results present only four choused laser powers by one process speed rate. Also one powder in form of TaC was used for alloying with the particle size of 10μm. Practical implications: The aim of this work is the determination of laser treatment technique for alloying and remelting of hot work tool steel. Originality/value: The originality of this work is based on applying of High Power Diode Laser for improvement of steel mechanical properties.

Słowa kluczowe

PL

obróbka powierzchniowa; obróbka cieplna; stal narzędziowa do pracy na gorąco; przetapianie laserowe

EN

surface treatment; heat treatment; hot work tool steel; laser melting

• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 325--328
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Dobrzański, L. A.

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

autor

Labisz, K.

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

autor

Klimpel, A.

• Welding Department, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

Bibliografia

• [1] L.A. Dobrzański, Fundamentals of Materials Science and Physical Metallurgy. Engineering Materials with Fundamentals of Materials Design, WNT, Warszawa - 2002 (in Polish).
• [2] L.A. Dobrzański, K. Labisz, M. Piec, A. Klimpel,“Influence of remelting and alloying parameters on structure and properties of gradient surface layer of hot work tool steel using tungsten carbide”, The 4th International Conference - Coatings and Layers, Demänovská dolina, Slovakia, 205-211 – 2005 (in Polish).
• [3] L.A. Dobrzański, K. Labisz, M. Piec, A. Klimpel, A. Lisiecki, “Influence of vanadium carbide ceramic powder on structure and properties of hot work tool steel alloyed with HPDL laser”, 2nd International Conference on Manufacturing Engineering ICMEN, Kassandra-Chalkidiki, Greece, 185-191 – 2005.
• [4] L.A. Dobrzański, K. Labisz, M. Piec, A. Klimpel, Modeling of surface laser of the 32CrMoV12-28 tool steel using HPDL laser for alloying with TiC polder, CAM3S Contemporary Achievement in Mechanics, Manufacturing and Materials Science, 6th-9th December 2005, Gliwice-Zakopane, Poland.
• [5] L.A. Dobrzański., M. Piec., K. Labisz, A. Lisiecki, A. Klimpel, “Laser treatment of surface layer of chosen hot work tool steels”, Worldwide Congress of Materials and Manufacturing Engineering and Technology COMMENT 2005, Proceedings of the 13th International Scientific Conference, Gliwice-Wisła, 183-186 – 2005.
• [6] L.A. Dobrzański, J. Mazurkiewicz, E. Hajduczek, Journal of Mat. Proc. Tech. 157-158, 472-484 – 2004.
• [7] A. Klimpel, High Power Diode Laser in Welding, Welding Review nr 8, Warszawa - 1999 (in Polish).
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• [9] K. Dae-Hwan, H. Seong-Hyeon, K. Byoung-Kee, Fabri-cation of ultrafine TaC powders by mechano-chemical process, Materials Letters, 87-92 – 2004.
• [10] X. Changqing, J. Zhanpeng, Interfacial reactions in an explosively-welded tantalum clad steel plate, Surface and Coatings Technology, 278-282 – 2000.
• [11] J. Pieniążek, J.S. Skrzypek, W. Ratuszek, F. Biczyk, Laser remelting of powders including intermetallic phases of the Fe-Al-Me Type, XXXII School of Materials Science Engineering – 2004 (in Polish).
• [12] K. Obergfell, V. Schultze, O. Vöhringer, Mat. Sci. and Eng. A355, 348-356 – 2003.
• [13] L.J. Yang, Wear coefficient of tungsten carbide against hot-work tool steel disc with two different pin settings., Science Direct, 234-240 – 2004.
• [14] S. Yahong, H. Satoshi, Y. Masato, U. Hitoshi, T. Hironobu, Fatigue behavior and fractography of laser-processed hot work tool steel., Science Direct, 128-134 – 2004.
• [15] L.A. Dobrzański, M. Bonek, A. Klimpel, A. Lisiecki, Alloying of the WCLV steel with tungsten carbide using High Power Diode Laser HPDL”, Gliwice – 2002 (in Polish).