Metal matrix composite laser metal deposition for ballistic application

Conference of the South African Advanced Materials Initiative 2018

Adam, R.^1 ; Botes, A.^2 ; Corderley, G.^2

National Laser Centre, Council for Scientific and Industrial Research, Meiring Naudé Road, Pretoria, Brummeria

0184, South Africa^1

Light Metals, Materials Science and Manufacturing, Council for Scientific and Industrial Research, Meiring Naudé Road, Brummeria, Pretoria

0184, South Africa^2

关键词: Backing materials;    Ballistic Protection;    Chemical formulae;    Development industry;    Laser metal deposition;    Process parameters;    Solidification cracking;    Vickers microhardness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/430/1/012001/pdf
DOI  :  10.1088/1757-899X/430/1/012001

来源: IOP

【 摘 要 】

The armour development industry uses ceramic tiles to provide effective ballistic protection to critical areas of military vehicles. The ceramic tiles are generally attached to a ductile backing material by means of an adhesive, which often incorporates defects that are undesirable for ballistic protection. Laser cladding provides a more efficient approach for applying a ceramic material onto a ductile backing through metallurgically bonding the materials. A 3kW, IPG fiber laser system was used to manufacture test coupons to investigate the process parameters for the laser metal deposition of a tungsten carbide (chemical formula WC) metal matrix material onto an Armox 500 backing material. Results show that good fusion to the base material with limited solidification cracking can be achieved. Vickers microhardness and sound velocity results showed satisfactory results for a ballistic application.