TY - GEN
T1 - Structure and properties of gradient layers using high power diode laser
AU - Dobrzañski, L. A.
AU - Piec, M.
AU - Trojanowa, Z.
AU - Lela̧tko, J.
AU - Klimpel, A.
PY - 2006
Y1 - 2006
N2 - Investigations include alloying the X38CrMoV5-3 hot-work tool steel surface layer with the tungsten carbide, using the high power diode laser (HPDL). The tungsten carbide ceramic particles of the medium grain size according to FSSS = 50 um were introduced using the rotor conveyer to improve the properties of the surface layer. The powder feed rate was set at the steady level of 8.64g/min. Remelting and alloying were carried out several times in the laser power range of 1.2 - 2.3 kW in the remelting/alloying, alloying/remelting sequences. The structural mechanism was determined of gradient layer development, effect was studied of alloying parameters, gas protection method, and powder feed rate on its mechanical properties, and especially on its hardness, abrasive wear resistance, and roughness. Structure changes were revealed consisting, in particular, in its refining, and also hardness and microhardness changes in comparison to the non-remelted steel. Examination results obtained with the EDX microanalysis, surface and linear analyses of the chemical composition, as well as the X-ray qualitative phase analysis are presented.
AB - Investigations include alloying the X38CrMoV5-3 hot-work tool steel surface layer with the tungsten carbide, using the high power diode laser (HPDL). The tungsten carbide ceramic particles of the medium grain size according to FSSS = 50 um were introduced using the rotor conveyer to improve the properties of the surface layer. The powder feed rate was set at the steady level of 8.64g/min. Remelting and alloying were carried out several times in the laser power range of 1.2 - 2.3 kW in the remelting/alloying, alloying/remelting sequences. The structural mechanism was determined of gradient layer development, effect was studied of alloying parameters, gas protection method, and powder feed rate on its mechanical properties, and especially on its hardness, abrasive wear resistance, and roughness. Structure changes were revealed consisting, in particular, in its refining, and also hardness and microhardness changes in comparison to the non-remelted steel. Examination results obtained with the EDX microanalysis, surface and linear analyses of the chemical composition, as well as the X-ray qualitative phase analysis are presented.
KW - Alloying
KW - Ceramic particles
KW - Gradient layers
KW - HPDL
KW - Remelting
UR - https://www.scopus.com/pages/publications/38449091709
U2 - 10.4028/0-87849-423-5.269
DO - 10.4028/0-87849-423-5.269
M3 - Conference contribution
AN - SCOPUS:38449091709
SN - 0878494235
SN - 9780878494231
T3 - Materials Science Forum
SP - 269
EP - 274
BT - Advanced Powder Technology V - Fifth International Latin American Conference on Powder Technology - PTECH2005
PB - Trans Tech Publications Ltd.
T2 - 5th International Latin-American Conference on Powder Technology, PTECH2005
Y2 - 26 October 2005 through 29 October 2005
ER -