Laser surface modification of AISI 410 stainless steel with brass for enhanced thermal properties

Abstract Brass coating was applied to AISI410 steel using high power laser in a laser engineered net shaping (LENS™) system. The influence of laser treatment on interfacial microstructure and thermal performance was evaluated as a function of coating thickness. Laser deposition resulted in a diffused and metallurgically sound interface between metallurgically incompatible brass coating and AISI410 steel substrate. The thermal conductivity of AISI410 steel increased from 27 W/mK to a maximum of 37 W/mK depending on the coating thickness, almost 50% gain. The absence of sharp interface between the coating and the substrate, as a result of laser processing, resulted in a low interfacial thermal contact resistance. Thermal performance tests showed that the brass coating can enhance the heat transfer rate of stainless steel substrate. These results show that novel and efficient feature based coatings can be exploited using laser-based advanced manufacturing technologies for various industrial applications.

[1]  A. Bandyopadhyay,et al.  Laser surface modification of Al–4Cu–1Mg alloy for enhanced thermal conductivity , 2009 .

[2]  Hsin Wang,et al.  Thermal conductivity and phase evolution of plasma-sprayed multilayer coatings , 2001 .

[3]  N. Dahotre,et al.  Laser surface engineering of steel for hard refractory ceramic composite coating , 1999 .

[4]  J. Ouyang,et al.  Characterization of laser clad yttria partially-stabilized ZrO2 ceramic layers on steel 16MnCr5 , 2001 .

[5]  K. Stern.  Metallurgical and ceramic protective coatings , 1996 .

[6]  Marystela Ferreira,et al.  Laser cladding of Ni-Cr/Al2O3 composite coatings on AISI 304 stainless steel , 1997 .

[7]  W. D. Kingery,et al.  Introduction to Ceramics , 1976 .

[8]  B. Vamsi Krishna,et al.  Surface modification of AISI 410 stainless steel using laser engineered net shaping (LENSTM) , 2009 .

[9]  Amit Bandyopadhyay,et al.  Functionally graded Co-Cr-Mo coating on Ti-6Al-4V alloy structures. , 2008, Acta biomaterialia.

[10]  W. Duley.  Co2 Lasers: Effects and Applications , 1976 .

[11]  D. Stöver,et al.  Thermophysical properties and thermal cycling behavior of plasma sprayed thick thermal barrier coatings , 2005 .

[12]  M. L. Griffith,et al.  Solidification in direct metal deposition by LENS processing , 2001 .

[13]  Amit Bandyopadhyay,et al.  Laser processing of bioactive tricalcium phosphate coating on titanium for load-bearing implants. , 2008, Acta biomaterialia.

[14]  B Vamsi Krishna,et al.  Low stiffness porous Ti structures for load-bearing implants. , 2007, Acta biomaterialia.

[15]  B Vamsi Krishna,et al.  Fabrication of porous NiTi shape memory alloy structures using laser engineered net shaping. , 2009, Journal of biomedical materials research. Part B, Applied biomaterials.

[16]  Michael B. Prime,et al.  Residual stresses in LENS® components using neutron diffraction and contour method , 2005 .

[17]  Jiansong Zhou,et al.  Friction and wear behavior of laser cladding Ni/hBN self-lubricating composite coating , 2008 .

[18]  M. Wang,et al.  Lamellar structures in laser surface remelted Zn–Cu peritectic alloy under ultra-high temperature gradient , 2004 .