Mechanical Engineering ETDs

Publication Date

Spring 4-14-2021

Abstract

Kovar (ASTM F15, UNS K94610) steel has many applications across Sandia National Laboratories but is best known within academia and industry for its glass-to-metal and glass-to-ceramic hermetic sealing capabilities. Successful printing parameters for a Renishaw AM400 to additively manufacture artifacts from Kovar steel powder have been determined. The printed test artifacts have been studied for ultimate tensile strength, density, surface roughness, hardness, bulk composition, and impact toughness. Longer throughput measurements such as porosity, coefficient of thermal expansion, and grain structure studies have been established for future delivery to the research team. Yet another delivery from this thesis research is a strategy with which to alter process parameters to achieve more desirable properties was produced. Based on the results of this study a set of design properties, while not yet optimized, is now available.

Keywords

3D Printing, metal printing, kovar steel, Renishaw, metal AM, AM

Degree Name

Mechanical Engineering

Level of Degree

Masters

Department Name

Mechanical Engineering

First Committee Member (Chair)

Peter Vorobieff

Second Committee Member

Yu-Lin Shen

Third Committee Member

Dale Cillessen

Document Type

Thesis

Language

English

Comments

The changes required have been made.

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