|About this Abstract
||MS&T23: Materials Science & Technology
||Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments IV
||In Situ SEM Nanomechanics at Cryogenic Temperatures
||Eric D. Hintsala, Kevin M. Schmalbach, Sanjit Bhowmick, Douglas D. Stauffer
|On-Site Speaker (Planned)
||Eric D. Hintsala
Temperature control from cryogenic to room temperature is important for a variety of applications, including aerospace and cold weather automobile performance. Low temperatures always influence mechanical behavior but can also result in more drastic changes such as phase transformations, ductile-to-brittle transitions, and glass transitions. In situ SEM testing enables visualization that’s directly correlated to mechanical data, which helps with their characterization. Furthermore, individual regions of a materials microstructure can be targeted. A low temperature control system has been developed for the Hysitron PI89 that enables continuous control from cryogenic to room temperatures, with independent control on the tip and sample to enable proper temperature matching in vacuum, as is required for elevated temperature testing. Here, the temperature dependent response of two metallic samples are tested at low temperatures, Nitronic 50 and Tungsten.