Abstract
The applications of super hard material have been increased in aerospace, marine and automobile industries. In the present, the investigation deals with rhenium diboride (ReB2)-based molybdenum metal matrix which is fabricated through stir casting method. Rhenium diboride is mixed to the molybdenum with various weight percentages such as 3, 5 and 8%. The material properties are evaluated for the sample specimens. Based on the comparison of material properties, molybdenum with 8% of rhenium diboride has been considered for these experimental investigations. Due to high hardness and strength, conventional machining methods are not suitable. Among all the unconventional machining processes, the laser beam machining process is the most suitable for high hardness materials. Various input and output parameters are considered. The responses such as the material removal rate (MRR) and surface roughness (SR) are measured. The effects and contribution of parameters are confirmed through analysis of variance (ANOVA) and Pareto charts.
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