TY - JOUR
T1 - Optimisation of the wear resistance properties of laser cladded T-800 coatings
AU - Malikongwa, Kinsman
AU - Tlotleng, Monnamme
AU - Olakanmi, Eyitayo Olatunde
N1 - Funding Information:
This research is supported by the African Laser Center (ALC) under Grant no. CSIR-NLC Reference LHIL 500 task ALC R014 and Botswana International University of Science & Technology (BIUST) Research Initiation Fund under Grant no. BIUST/ds/r&I/7/2016. The authors are grateful to Mr. Samuel Skhosane for his assistance in operating the laser facility at CSIR, Pretoria, South Africa.
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer-Verlag London Ltd. part of Springer Nature.
PY - 2021/5
Y1 - 2021/5
N2 - Taguchi design of experiments (DoE) was employed to determine appropriate laser cladding (LC) parameters for optimising microstructural and anti-wear properties of Tribaloy (T-800) coatings. The nature of wear mechanism was also explored with scanning electron microscopy (SEM). Statistical analysis established that both microhardness and wear rates were primarily dependent on powder feed rates and scanning speeds while coefficient of friction (COF) is significantly influenced by spot diameter. Variation in wear morphology, across the samples, could be explained by presence or absence of surface defects; sizes of surface defects, distance between the surface defects as well as the nature of evolving microstructure within the clad samples. Optimum samples were imparted with microhardness (900 HV), COF (0.0743) and specific wear rate (0.0071 mm3/N/m), and these compared favourably well with the predicted values. Samples fabricated with optimum LC parameters are suitable for wear application in mining industries.
AB - Taguchi design of experiments (DoE) was employed to determine appropriate laser cladding (LC) parameters for optimising microstructural and anti-wear properties of Tribaloy (T-800) coatings. The nature of wear mechanism was also explored with scanning electron microscopy (SEM). Statistical analysis established that both microhardness and wear rates were primarily dependent on powder feed rates and scanning speeds while coefficient of friction (COF) is significantly influenced by spot diameter. Variation in wear morphology, across the samples, could be explained by presence or absence of surface defects; sizes of surface defects, distance between the surface defects as well as the nature of evolving microstructure within the clad samples. Optimum samples were imparted with microhardness (900 HV), COF (0.0743) and specific wear rate (0.0071 mm3/N/m), and these compared favourably well with the predicted values. Samples fabricated with optimum LC parameters are suitable for wear application in mining industries.
UR - http://www.scopus.com/inward/record.url?scp=85102956968&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85102956968&partnerID=8YFLogxK
U2 - 10.1007/s00170-021-06718-y
DO - 10.1007/s00170-021-06718-y
M3 - Article
AN - SCOPUS:85102956968
SN - 0268-3768
VL - 114
SP - 481
EP - 496
JO - International Journal of Advanced Manufacturing Technology
JF - International Journal of Advanced Manufacturing Technology
IS - 1-2
ER -