TY - JOUR
T1 - Laser power and Scanning Speed Influence on the Mechanical Property of Laser Metal Deposited Titanium-Alloy
AU - Mahamood, Rasheedat M.
AU - Akinlabi, Esther T.
AU - Akinlabi, Stephen
N1 - Funding information: This work is supported by the Rental Pool Grant of the National Laser Centre - Council of Scientific and Industrial Research (NLC-CSIR), Pretoria South Africa.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - The influence of the laser power and the scanning speed on the microhardness of the Laser Metal Deposited Ti6Al4V, an aerospace Titanium-alloy, was studied. Ti6Al4V powder was deposited on the Ti6Al4V substrate using the Laser Metal Deposition (LMD) process, an Additive Manufacturing (AM) manufacturing technology. The laser power was varied between 1.8 kW 3 kW and the scanning speed was varied between 0.05 m/s and 0.1 m/s. The powder flow rate and the gas flow rate were kept at constant values of 2 g/min and 2 l/min respectively. The full factorial design of experiment was used to design the experiment and to also analyze the results in the Design Expert 9 software environment. The microhardness profiling was studied using Microhardness indenter performed at a load of 500 g and at a dwelling time of 15 s. The distance between indentations was maintained at a distance of 15 μm. The study revealed that as the laser power was increased, the microhardness was found to decrease and as the scanning speed was increased, the microhardness was found to also increase. The results are presented and fully discussed.
AB - The influence of the laser power and the scanning speed on the microhardness of the Laser Metal Deposited Ti6Al4V, an aerospace Titanium-alloy, was studied. Ti6Al4V powder was deposited on the Ti6Al4V substrate using the Laser Metal Deposition (LMD) process, an Additive Manufacturing (AM) manufacturing technology. The laser power was varied between 1.8 kW 3 kW and the scanning speed was varied between 0.05 m/s and 0.1 m/s. The powder flow rate and the gas flow rate were kept at constant values of 2 g/min and 2 l/min respectively. The full factorial design of experiment was used to design the experiment and to also analyze the results in the Design Expert 9 software environment. The microhardness profiling was studied using Microhardness indenter performed at a load of 500 g and at a dwelling time of 15 s. The distance between indentations was maintained at a distance of 15 μm. The study revealed that as the laser power was increased, the microhardness was found to decrease and as the scanning speed was increased, the microhardness was found to also increase. The results are presented and fully discussed.
KW - Laser metal deposition (LMD)
KW - Laser power
KW - Microhardness
KW - Scanning Speed
KW - Titanium alloy
UR - http://www.scopus.com/inward/record.url?scp=85017043362&partnerID=8YFLogxK
U2 - 10.1007/s40516-014-0003-y
DO - 10.1007/s40516-014-0003-y
M3 - Article
AN - SCOPUS:85017043362
SN - 2196-7229
VL - 2
SP - 43
EP - 55
JO - Lasers in Manufacturing and Materials Processing
JF - Lasers in Manufacturing and Materials Processing
IS - 1
ER -