College - Author 1
College of Engineering
Department - Author 1
Materials Engineering Department
Degree Name - Author 1
BS in Materials Engineering
College - Author 2
College of Engineering
Department - Author 2
Materials Engineering Department
Degree - Author 2
BS in Materials Engineering
Date
6-2023
Primary Advisor
Blair London, College of Engineering, Materials Engineering Department
Abstract/Summary
To personalize loft and lie angles for avid golfers, TaylorMade Golf bends clubs to fit their needs. Our project goal is to find the best heat treatment parameters in order to prevent golf club hosels from breaking in manufacturing, which will save TaylorMade time and money. We did microhardness and microstructural analysis on 20 golf club heads. These include two different types of steel, 8620 and C450. For each steel, we received a non-heat-treated sample, 3 samples heated to their nominal temperature, 3 samples heated 100℃ below the nominal temperature, and 3 samples heated 100℃ above the nominal temperature. 20 cylindrical tensile specimens were also tested with the same heat treatments. Through microstructural analysis we confirmed that the +100℃ sample’s heat affected zone showed signs of recrystallization indicating a full phase transformation into the austenite region during heat treatment. Microhardness testing showed no significant differences in hardness between the different heat treatments. Tensile data showed a significant increase in percent ductility with hotter heat treatments. Although the nominal heat treatment should reach full austenitization, we believe the samples are not being held at this temperature long enough, due to the rapid rate of induction coil heating, for diffusion to occur. Thus, the reason why we are seeing 3-4% less ductility in the nominal heat treatment compared to the +100℃ heat treatment.
URL: https://digitalcommons.calpoly.edu/matesp/271