Laser Surface Alloying of Aluminium AA1200

Aluminium AA1200 was laser alloyed with mixtures of Ni, Ti and SiC powders using a 4.4 kW Rofin Sinar Nd:YAG laser to improve its surface hardness. The reactions of Al with Ni resulted in the in situ formation of Al3Ni and Al3Ni2 intermetallic phases while Ti reacted with Al to form an Al3Ti. Some of the SiC particles dissociated and reacted with either Al or Ti to form Al4C3, Al4SiC4, TiC or Ti3SiC2 phases. Si reacted with Ti to form a Ti5Si3 phase. Surface hardness increased after laser alloying due to the formation of intermetallic phases and metal matrix composites.

[1]  N. Adkins,et al.  Structural characterisation of Al–Ni powders produced by gas atomisation , 2009 .

[2]  Hong Wang,et al.  Influence of Al addition on the products of self-propagating high-temperature synthesis of Al–Ti–Si system , 2009 .

[3]  Di Zhang,et al.  Thermodynamic Effects of Alloying Elements on Solid-State Interfacial Reactions in a Multicomponent System: Theoretical Treatment and Application in SiCf/Ti Composites , 2009 .

[4]  R. Sun,et al.  Microstructure and hardness of laser clad SiCp–Al composite coatings on Al alloys , 2008 .

[5]  J. Hosson,et al.  Microstructure and wear studies of laser clad Al-Si/SiC(p) composite coatings , 2007 .

[6]  H. C. Man,et al.  Improving the wear resistance of AA 6061 by laser surface alloying with NiTi , 2007 .

[7]  D. Walter,et al.  Solid State Reactions in the Al‐Si‐C System , 2005 .

[8]  J. B. Zhou,et al.  Thermal stability and phase formation of mechanically alloyed Ti-Al-Si-C powders , 2004 .

[9]  Y. Zhou,et al.  Reactions between Al and Ti3SiC2 in temperature range of 600–650 °C , 2003 .

[10]  U. Wendt,et al.  Laser alloying of aluminum with titanium wire , 2003 .

[11]  J. Mazumder,et al.  Characterization of microstructure in laser-surface-alloyed layers of aluminum on nickel , 2003 .

[12]  R. Drew,et al.  The influence of nickel coating on the wettability of aluminum on ceramics , 2002 .

[13]  Shujie Li,et al.  Wettability and interfacial reaction in SiC/Ni plus Ti system , 2002 .

[14]  V. Ocelík,et al.  SiCp/Ti6Al4V functionally graded materials produced by laser melt injection , 2002 .

[15]  T. Yue,et al.  In situ synthesis of TiC reinforced surface MMC on Al6061 by laser surface alloying , 2002 .

[16]  M. Hashmi,et al.  The wettability of SiC particles by molten aluminium alloy , 2001 .

[17]  T. Yue,et al.  Laser surface alloying of NiCrSiB on Al6061 aluminium alloy , 2001 .

[18]  V. Masilamani,et al.  Microhardness and Microstructure Studies on Laser Surface Alloyed Aluminum Alloy with Ni-Cr , 2000 .

[19]  J. Selvan,et al.  Laser alloying of aluminium with electrodeposited nickel: optimisation of plating thickness and processing parameters , 2000 .

[20]  J. Hosson,et al.  Reaction layers around SiC particles in Ti: an electron microscopy study , 1999 .

[21]  J. Hosson,et al.  Electron microscopy of reaction layers between SiC and Ti-6Al- 4V after laser embedding , 1998 .

[22]  T. N. Baker,et al.  A new aluminium silicon carbide formed in laser processing , 1997 .

[23]  W. Steen,et al.  Microstructure and corrosion properties of laser surface processed aluminium alloys: a review , 1997 .

[24]  J. Bouix,et al.  Phase equilibria at 1000°C in the AlCSiTi quaternary system: An experimental approach , 1997 .

[25]  J. Zahavi,et al.  Laser alloying and cladding for improving surface properties , 1996 .

[26]  D. Eliezer,et al.  Production, Characteristics, and Commercialization of Titanium Aluminides , 1991 .