Speaker: Qizhen Li, Associate Professor in the School of Mechanical and Materials Engineering at Washington State University
Title: Light Metals for Structural and Functional Applications: Processing, Microstructure, and Property
Abstract: Light metals have a broad range of structural and functional applications. They are highly attractive to various industries such as aerospace and aeronautics, automotive, defense, and biomedical industries. It is crucial to understand the processing-structure-property relationship of light metals. In this talk, I will primarily discuss some of our research on mechanical properties, deformation mechanisms, and degradation and corrosion resistance of AZ31 magnesium alloys with a series of different microstructure features. Some critical results are (a) the variation of microstructure features (equiaxed grains vs. bimodal grains) significantly affects mechanical properties of AZ31 magnesium alloy; (b) different twinning and dislocation slipping processes were activated for AZ31 magnesium alloy deformed under different strain paths; (c) both degradation resistance and corrosion resistance of AZ31 magnesium alloy were significantly enhanced through surface modification processing including hydrothermal treatment, immersion into oleic acid, and subsequent heat treatment. This talk will also briefly discuss about manufacturing and properties of porous magnesium, bioactivity of Ti64, and hydrogen embrittlement of additively-manufactured IN718 superalloy.
Bio: Dr. Qizhen Li is an associate professor in the School of Mechanical and Materials Engineering at Washington State University. She received her Ph.D. in Materials Science and Engineering from The Ohio State University in 2004. Her research interests include design and manufacture of advanced materials for structural, energy, and bio-applications; mechanical behavior of materials; and relationship among processing, structure and property of advanced materials. She has received several awards such as the NSF CAREER Award, TMS Young Leader Professional award, Nevada Regents Rising Researcher award, and TMS/JIM International Scholar Award.
MSE Seminar Host: Katie Bratlie