College of Engineering
Materials Engineering Department
BS in Materials Engineering
A newly developed copper-based alloy, P98-X1 was tested for compressive strength to predict qualitative performance compared to MF53, F-Bronze, CuNiSn, and CuMnNi for use as the infiltration alloy in metal matrix composite (MMC) drill bits. Ingots of each alloy were cast using an arc furnace and cut into compression testing samples using wire electrical discharge machining (EDM). The alloys were selected for testing based on solid solution strengthening coefficient and melting point. Five of each alloy were compression tested to determine yield strength of the infiltration alloy. Yield strength was determined using a 0.002mm displacement offset from the linear elastic region of the stress versus displacement plot. MMC sample pins of the P98-X1 and MF53 were also 3-point bend tested to determine transverse rupture strength (TRS) and to compare the yield strength of the infiltration alloy to TRS if the MMC. It was determined that CuNiSn had the highest yield strength at 256 MPa, the second strongest alloy was the P98-X1 with a yield strength of 200 MPa.
Available for download on Wednesday, June 12, 2024