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MSE Seminar Series: E. Ma
Friday, October 17, 2014
1:00 p.m.
Room 2108, Chemical and Nuclear Engineering Bldg.
For More Information:
JoAnne Kagle
301 405 5240

Metallic Glasses: At the Cutting Edge of Metals Research
E. Ma
Department of Materials Science and Engineering
Johns Hopkins University

The metals we are familiar with are all crystals. But in recent years, amorphous metals have emerged as a new category of metallic alloys. They are currently a focus of intense research in the metals community worldwide. When metallic glasses were first discovered in the 1960’s, the alloy compositions then known to be quenchable into the glassy state from the liquid required cooling rates were as high as 106 K s–1 (the products were consequently restricted to very thin sections).  The current interest in metallic glasses has its origin mainly in the increasing range of compositions that can now be cast into glasses at much lower cooling rates, permitting minimum sections of 1 mm to 1 cm or even larger (hence the term bulk metallic glasses, BMGs). My talk will illustrate a few major materials issues for metallic glasses, focusing mostly on their intriguing atomic-level structures, and correlations of the glass structure with their mechanical properties such as their high strength, large elastic strain and plastic flow at room temperature.

About the Speaker:
E. Ma is a professor of Materials Science and Engineering at Johns Hopkins University. He did his undergraduate studies at Tsinghua Univ. and graduate work at Tsinghua and Caltech, and was a postdoctoral fellow at MIT, Univ. of Michigan and UIUC. He was an assistant and associate professor at LSU before becoming a member of the JHU faculty in 1998. Prof. Ma has published ~280 papers (w/ ~15,000 citations and h index=65) and presented ~105 invited talks at international conferences. He is an elected Fellow of ASM, and of APS. From 2009 to 2014, Dr. Ma also held an adjunct professorship at Xi’an Jiaotong Univ. in China.

This Event is For: Campus

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