|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||In Situ Deformation Study of Nanotwinned and Single Crystal Cu Implanted with He Using a Novel Implantation Method
||Peter Hosemann, Zhangjie Wang, Frances Allen, Ian Winter, Daryl Chrzan, Zhiwei Shan
|On-Site Speaker (Planned)
The effect of He bubbles on the plastic deformation in materials is a concern for fusion and spallation source applications. Materials containing large amounts of He increase strength but show reduced elongation. In this work a novel implantation technique utilizing a Helium ion beam microscope was deployed which greatly improves the sample throughput and precision due to the localized implantation capability. Detailed in situ (TEM) mechanical testing of the He implanted Cu (single crystal as well as nano twinned) is conducted while the post testing data analysis allows to calculate the critical stress necessary to move twin boundaries as well as ordinary dislocations through a He bubble superlattice. Initial comparisons of selected properties between modeling and experiments of the He bubble containing copper are shown.
||Planned: EPD Congress Volume