Metallurgy Commons^™

Slm Processing-Microstructure-Mechanical Property Correlation In An Aluminum Alloy Produced By Additive Manufacturing, Bryce Abstetar

Graduate Theses & Non-Theses

Additive manufacturing has become a highly researched topic in recent years all over the world. The current research evaluates the merits of additive manufacturing based on the mechanical, microstructural, and fracture properties of additive manufactured AlSi10Mg test specimens. The additive manufactured build plates consisted of tensile and fatigue test specimens. They were printed in the 0°, 30°, 60°, and 90° orientations relative to the build platform. Tensile and dynamic fatigue tests were conducted followed by microstructural characterization and fracture analysis. A wrought 6061 T6 aluminum alloy was also tested for comparison. Tensile tests revealed similar ultimate tensile strengths for all …

Electrochemical Characterization Of Xanthate Chemisorption On Copper And Enargite, Tyler Broden

Graduate Theses & Non-Theses

The electrochemical reactions of copper and enargite (Cu₃AsS₄) were studied in the absence and presence of xanthate by cyclic voltammetry (C.V.) using electrodes fashioned from pure copper wire obtained from the Metallurgical and Materials Engineering Department, and an enargite mineral sample obtained from the Orphan Girl mine in Butte, MT. Voltammograms were produced in buffer solutions of pH values ranging from 7-12. Electrochemical reactions were discerned by comparing E_H-pH diagrams calculated from thermodynamics using StabCal, a computer program developed by Dr. Huang at Montana Tech. The chemisorption of xanthate on the surface of copper …

Vacuum Brazing Of Diamond To Tungsten Carbide, Zhiyong Yin

Graduate Theses & Non-Theses

Diamond tools are increasingly gaining importance as cutting and drilling materials for a wide variety of industrial applications. Polycrystalline diamond (PCD) is the main ultrahard material commercially used in the oil and gas drilling industry. In this study, a reactive brazing process was developed to join polycrystalline diamond (PCD) to WC-13 wt% Co, to form the cutter for fixed-cutter drill bit applications.

Most nonmetals including polycrystalline diamond are not wet by and cannot easily be joined with conventional brazing alloys due to their chemical stability. The experimental approach was first to analyze the effect of adding an active metal (Ti, …

Chlorination And Selective Vaporization Of Rare Earth Elements, Daniel Gaede

Graduate Theses & Non-Theses

No abstract provided.