Structure and properties of laser alloyed gradient surface layers of the hot-work tool steels

• Autorzy: Dobrzański L. , Bonek M. , Hajduczek E. , Labisz K. , Piec M. , Jonda E. , Polok A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of this research paper is focused on the 55NiCrMoV7, 32CrMoV12-28, X40CrMoV5-1, X38CrMoV5-3 hot work tool steels surface layers improvement properties using HPDL laser. The paper present laser surface technologies, investigation of structure and properties of the hot work tool steels alloying with ceramic particles using high power diode laser HPDL. Design/methodology/approach: Investigation indicate the influence of the alloying carbides on the structure and properties of the surface layer of investigated steel depending on the kind of alloying carbides and power implemented laser (HPDL). Laser alloying of surface layer of investigated steel without introducing alloying additions into liquid molten metal pool, in the whole range of used laser power, causes size reduction of dendritic microstructure with the direction of crystallization consistent with the direction of heat carrying away from the zone of impact of laser beam. Findings: In the effect of laser alloying with powders of carbides NbC, TaC, TiC, WC and VC occurs size reduction of microstructure as well as dispersion hardening through fused in but partially dissolved carbides and consolidation through enrichment of surface layer in alloying additions coming from dissolving carbides. Introduced particles of carbides and in part remain undissolved, creating conglomerates being a result of fusion of undissolved powder grains into molten metal base. In effect of convection movements of material in the liquid state, conglomerates of carbides arrange themselves in the characteristic of swirl. Remelting of the steel without introducing into liquid molten pool the alloying additions in the form of carbide powders, causes slight increase of properties of surface layer of investigated steel in comparison to its analogical properties obtained through conventional heat treatment, depending on the laser beam power implemented for remelting. Practical implications: It has the important cognitive significance and gives grounds to the practical employment of these technologies for forming the surfaces of new tools and regeneration of the used ones. The increase of hardness of surface layer obtained throughout remelting and alloying with carbides by high power diode laser is accompanied by increase of tribological properties, when comparing to the steel processed with conventional heat treatment. Originality/value: The outcome of the research is an investigation and proving the structural mechanisms accompanying laser remelting and alloying. The artificial neural networks were used to determine the effect of the technological effect of laser alloying on hardness and resistance wear abrasion of the hot work tool steels.

Słowa kluczowe

EN

heat treatment; laser; tool materials

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 31, nr 2
• Strony: 148--169
• Opis fizyczny: Bibliogr. 33 poz., wykr.

Twórcy

autor

Dobrzański L.

autor

Bonek M.

autor

Hajduczek E.

autor

Labisz K.

autor

Piec M.

autor

Jonda E.

autor

Polok 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 18a, 44-100 Gliwice, Poland

Bibliografia

• [1] Y. Miyamoto, W. A. Kaysser, B. H. Rabin, A. Kawasaki, R. G. Ford, Functionally Graded Materials, Kluwer Academic Publishers, Boston, 1999.
• [2] T. Hirai, in R. J. Brook (Ed.), Materials Science and Technology, Vol. 17B, Processing of Ceramics, Part 2, VCH Verlagsgesellschaft, Weinheim, Germany, 1996, 292-341.
• [3] A. Kawasaki, R. Watanabe, Concept and P/M fabrication of Functionally Gradient Materials, Ceramics International 23 (1997) 73-83.
• [4] B. Kieback, A. Neubrand, H. Riedel, Processing techniques for functionally graded materials, Materials Science and Engineering A 362 (2003) 81-106.
• [5] M. Yuki, T. Murayama, T. Irisawa, A. Kawasaki, R. Watanabe, in M. Yamanouchi, M. Koizumi, T. Hirai, I. Shiota (Eds.), FGM'90, Proceedings of the 1st International Symposium on Functionally Gradient Materials, Sendai, FGM Forum, Tokyo, 1990, 203-208.
• [6] W. Lengauer, K. Dreyer, Functionally graded hardmetals, Journal of Alloys and Compounds 338 (2002) 194-212.
• [7] E. M. Ruiz-Navas, R. Garcýa, E. Gordo, F. J. Velasco, Development and characterisation of high-speed steel matrix composites gradient materials, Journal of Materials Processing Technology 143-144 (2003) 769-775.
• [8] Z. Changchi, Study of protection from cracks in laser cladding of metal-ceramic composite coating, The International Society for Optical Engineering 2888 (1996) 259-264.
• [9] J. H. Abboud, Functionally gradient titanium-aluminide composites produced by laser cladding, Journal of Materials Science 29/13 (1994) 3393-3398.
• [10] Z. Tao, Microstructures and tribological behavior of Cr/WC laser modified gradient layer on cast Al.-Si alloy, Journal of Shanghai Jiaotong University 36/5 (2002) 612-615.
• [11] P. Yutao, Laser clad TiCp/Ni alloy functionally gradient coating and its in-situ formation mechanism, Acta Metallurgica Sinica 34/9 (1998) 987-991
• [12] W. Xiaolei, In situ formation by laser cladding of TiC composite coating with a gradient distribution, Surface and Coatings Technology 115/2 (1999) 111-115.
• [13] J. T. M. De Hosson, V. Ocelik, Functionally graded materials produced with high power laser, Materials Science Forum (2003) 163-176.
• [14] L. Qibin, Microstructure and character of friction and wear of WCp/Ni based alloy gradient composite coating by wide-band laser cladding, Acta Materiae Compositae Sinica 19/6 (2002) 98-103.
• [15] Z. Tao, Microstructure of Ni/WC laser gradient coating on cast AL-Si alloy, Journal of Shanghai Jiaotong University 36/1 (2002) 203-208.
• [16] T. Nailing, Laser cladding high temperature alloy and WC ceramic, The International Society for Optical Engineering 3862 (1999) 47-55.
• [17] M. Bonek, L. A. Dobrzański, M. Piec, E. Hajduczek, A. Klimpel, Crystallisation mechanism of laser alloyed gradient layer on tool steel, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 411-414.
• [18] L. A. Dobrzański, M. Piec, A. Klimpel, Z. Trojanowa, Surface modification of hot work tool steel by high-power diode laser, International Journal of Machine Tools and Manufacture 47/5 (2007) 773-778.
• [19] L. A. Dobrzański, M. Piec, M. Bonek, E. Jonda, A. Klimpel, Mechanical and tribological properties of the laser alloyed surface coatings, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 235-238.
• [20] L. A. Dobrzański, M. Piec, A. Klimpel, Improvement of the hot work tool steel surface layers properties using a high power diode laser, Journal of Achievements in Materials and Manufacturing Engineering 21/1 (2007) 13-22.
• [21] L. A. Dobrzański, M. Bonek, M. Piec, E. Jonda, Diode laser modification of surface gradient layer properties of a hot-work tool steel, Materials Science Forum 532-533 (2006) 657-660.
• [22] M. Bonek, L. A. Dobrzański, A. Klimpel, Structure and properties of hot-work tool steel alloyed by WC carbides by a use of high power diode laser, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 175-178.
• [23] L. A. Dobrzański, M. Piec, K. Labisz, M. Bonek, A. Klimpel, Functional properties of surface layers of X38CrMoV5-3 hot work tool steel alloyed with HPDL laser, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 191-194.
• [24] L. A. Dobrzański, K. Labisz, M. Piec, A. Klimpel, Modelling of surface layer of the 32CrMoV12-28 tool steel using HPDL laser for alloying with TiC powder, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 27-34.
• [25] M. Piec, L. A. Dobrzański, K. Labisz, E. Jonda, A. Klimpel, Laser Alloying with WC Ceramic Powder in Hot Work Tool Steel using a High Power Diode Laser (HPDL), Advanced Materials Research 15-17 (2007) 193-198.
• [26] L. A. Dobrzański, K. Labisz, A. Klimpel, Structure and properties of the laser alloyed 32CrMoV12-28 with ceramic powder, International Journal of Surface Science and Engineering (2007) 237-245.
• [27] L. A. Dobrzański, E. Jonda, A. Polok, A. Klimpel, Comparison of the thermal fatigue surface layers of the X40CrMoV5-1 hot work tool steels laser alloyed, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 135-138.
• [28] L. A. Dobrzański, E. Jonda, A. Kriz, K. Lukaszkowicz, Mechanical and tribological properties surface layer of the hot work tool steel obtained by laser alloying, Archives of Materials Science and Engineering 28/7 (2007) 389-396.
• [29] L. A. Dobrzański, A. Polok, P. Zarychta, E. Jonda, M. Piec, K. Labisz, Modelling of properties of the alloy tool steels after laser surface treatment, International Journal of Computational Materials Science and Surface Engineering 5 (2008) 135-147.
• [30] M. Bonek, L. A. Dobrzański, The study of properties of laser modified hot-work tool steel surface layer, Journal of Achievements in Materials and Manufacturing Engineering 28/1 (2008) 75-78.
• [31] M. Bonek, L. A. Dobrzański, Microstructural and tribological characterization of hot-work tool steel modified by laser alloying, Proceedings of the 24th International Manufacturing Conference IMC24, Manufacturing-Focus on the Future, Waterford Institute of Technology, Ireland, 2007, 805-812.
• [32] L. A. Dobrzański, K. Labisz, M. Bonek, A. Klimpel, Structure and properties of the 32CrMoV12-28 hot work tool steels alloyed with BN and Si3N4 powder using HPDL laser, The International Conference Advances in Materials and Processing Technologies AMPT'2008, Manama, Kingdom of Bahrain, 2008, (CD-ROM).
• [33] L. A. Dobrzański, K. Labisz, M. Bonek, A. Klimpel, Comparison of WC, VC and TaC powder HPDL alloyed 32CrMoV12-28 steel with using HPDL laser,Journal of Achievements in Materials and Manufacturing Engineering 30/2 (2008) 187-192.