| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
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| Symposium
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Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments V
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| Presentation Title |
Localized Crystallization of Zr Following Heavy Ion Irradiation of HfNbTaZr MPEA |
| Author(s) |
Abhishek Kc, Sal Rodriquez, Khalid Hattar, Eric J Lang |
| On-Site Speaker (Planned) |
Abhishek Kc |
| Abstract Scope |
Multiple-Principal Element Alloys (MPEAs) have received significant attention due to their excellent thermal and mechanical properties in combination with their radiation resistance depending on their composition. This makes them an excellent choice for extreme conditions such as one found in a nuclear reactor. HfNbTaZr is an MPEA that offers high corrosion resistance at higher temperatures in low radiation environments such as turbomachinery, heat exchangers, and piping.
In this work, we discuss the radiation tolerance of HfNbTaZr following 2.8 MeV Au irradiation at temperatures up to 300 oC. Combining the results from in-situ TEM irradiation with ex-situ irradiation, we decipher the effects of local composition and temperature on the damage evolution and accumulation, presenting evidence of localized recrystallization and impact on nanomechanical properties. This study further enhances our understanding of ion irradiation on MPEAs.
This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE- NA0003525.
Unclassified Unlimited Release |