Christina Ciganik

Thesis Title: Influence of Composition and Processing on the Strength and Torsional Ductility of High Strength Steel Wire

 Abstract: High carbon, high strength steel wires are commonly used in applications such as bridge cable, mooring cable, hoisting rope, etc. where high tensile strengths and good ductility are desirable parameters. In order to produce a cable with significantly elevated breaking load, multiple drawn or end galvanized wire are twisted together. If the wire ductility is poor, wires can split longitudinally along the wire axis during torsional loading, also known as delamination. The occurrence and possible origins of delamination have been extensively researched, but no single mechanism has been identified as the primary cause of its initiation.For this work, wires were produced with varying carbon and silicon concentrations, and processing variations included Stelmor cooling, intermediate lead patenting, and hot-dip galvanizing following wire drawing. Results are presented to explore relationships between microstructures, tensile properties, and the propensity to delaminate during torsion.

Degree Plan: MS/PhD

Completion: May 2017
Group: Bar
Steel Center Student Since: August 2014

Bio: Christina joined the steel center in August of 2014, after graduating with a Bachelor of Science in Materials Science and Engineering from The Pennsylvania State University in December of 2013.

Office: 179

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