Effect of processing parameters on the cohesive strength of laser surface engineered ceramic coatings on aluminum alloys

摘要: Abstract The mechanical performance of laser surface engineered ceramic composite (TiC/Al) coating on 2024 and 6061 Al alloy substrates has been evaluated using four-point bend test. the is expressed in terms cohesive strength coating. Load-displacement measurements carried out during test helps to determine load corresponding crack initiation. This required initiate fracture provides a measure A simplistic approach based elementary beam theory material conjunction with rule mixture was adopted calculate also further extended for attempts evaluate apparent residual stress within Since process parameters exert significant influence controlling end properties component, effect power scan speed investigated. It observed that coatings lower speeds have much higher strengths they seem good metallurgical bond substrate thus showing better behavior than other high used this present study. appears transform from compressive tensile nature increasing eventually contributing delamination