Metallographic Aspects of Surface-Treated Steels by using Laser Technology

In-situ synthesis of a carbide reinforced steel matrix surface nanocomposite by laser melt injection technology and subsequent heat treatment

“…1b that nano-sized TiC particles are not able to incorporate into liquid steel. This result explains some earlier experimental observations [1,[10][11], describing experimental problems associated with incorporation of not perfectly wetted and low-density TiC particles into liquid steel. Such problems have not been mentioned in connection with perfectly wetted and high-density WC particles [9,11,14,[16][17], what is in accordance with Table 1.…”

“…During LMI hard particles with the size range of 10-100 µm are blown by a gas stream into a liquid metallic pool, melted by a fast moving laser beam. The particles are usually carbides [1,[8][9][10][11][12]14,[18][19][20][21][23][24][25][26][27][29][30][31][32][33][34][35][36][38][39][40][41][42][43], borides [3][4][5][6][7], nitrides [2], oxides [13,15]), or even soft Pb droplets [28].…”

“…Laser Melt Injection (LMI) technology has been known since the 1980s [1] and has been used to improve surface characteristics of metallic alloys, such as steels [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], aluminum [18][19][20][21][22][23][24][25][26][27][28], titanium [27,[29][30][31][32][33][34][35][36][37][38][39], nickel [40][41][42] and magnesium [43]. During LMI hard particles with the size range of 10-100 µm are blown by a gas stream into a liquid metallic pool, melted by a fast moving laser beam.…”

Performance of a cutting tool made of steel matrix surface nano-composite produced by in situ laser melt injection technology

“…The combination of WC + Co particles was used by Bitay and Roósz (2006). TiC particles were added into liquid steel by Fábián et al (2003).…”