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Mills SH, Hayes RD, Bieberdorf N, Zeltmann SE, Kennedy AM, Scarlat RO, Asta M, Minor AM. Elucidating the Role of Cr Migration in Ni-Cr Exposed to Molten FLiNaK via STEM-Based Methods. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1505-1506. [PMID: 37613730 DOI: 10.1093/micmic/ozad067.774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Sean H Mills
- Materials Science and Engineering, University of California at Berkeley, Berkeley, CA, United States
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Ryan D Hayes
- Nuclear Engineering, University of California at Berkeley, Berkeley, CA, United States
| | - Nathan Bieberdorf
- Materials Science and Engineering, University of California at Berkeley, Berkeley, CA, United States
| | - Steven E Zeltmann
- Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University, New York, United States
| | - Alexandra M Kennedy
- Nuclear Engineering, University of California at Berkeley, Berkeley, CA, United States
| | - Raluca O Scarlat
- Nuclear Engineering, University of California at Berkeley, Berkeley, CA, United States
| | - Mark Asta
- Materials Science and Engineering, University of California at Berkeley, Berkeley, CA, United States
| | - Andrew M Minor
- Materials Science and Engineering, University of California at Berkeley, Berkeley, CA, United States
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
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Nagel C, Rätzke K, Schmidtke E, Faupel F. Free Volume Changes in Bulk Amorphous Alloys During Structural Relaxation and in the Supercooled Liquid State. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-554-75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractVolume changes in Zr46.7Ti8.3Cu7.5Ni10Be27.5 and Zr 65Al7.5Ni10Cu17.5 bulk metallic glasses have been observed by positron annihilation and density measurements. At low cooling rates excess volume of the order of 0.1 % is quenched in both glasses. Isothermal relaxation kinetics below the glass transition temperature obey a Kohlrausch law with exponents of β≈(0.3 ± 0.1). Structural relaxation is not accompanied by embrittlement, as indicated by simple mechanical tests. The outer surface plays a crucial role in annealing of excess volume, which can be restored by annealing above Tg. The observed free volume changes are at variance with the behavior of a perfectly strong glass. The temperature dependence of the positron lifetime is discussed in terms of thermal detrapping from shallow traps.
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Dupasquier A, Zecca A. Atomic and solid-state physics experiments with slow-positron beams. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/bf02724348] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Uedono A, Suzuki R, Ohdaira T, Mikado T, Tanigawa S, Ban M, Kyoto M, Uozumi T. Open spaces and relaxation processes in the subsurface region of polypropylene probed by monoenergetic positron beams. ACTA ACUST UNITED AC 2000. [DOI: 10.1002/(sici)1099-0488(20000101)38:1<101::aid-polb13>3.0.co;2-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Smirnov EA, Semenikhin NA, Repin IA, Krylov IL. Positron annihilation applied to point defects and phase transitions in a zirconium-titanium alloy. ATOM ENERGY+ 1989. [DOI: 10.1007/bf01126396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hidalgo C, Linderoth S, de Diego N. Positron-Dislocation Interaction in Deformed Zn and Cd. ACTA ACUST UNITED AC 1987. [DOI: 10.1002/pssa.2211020109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Eldrup M. Application of the Positron Annihilation Technique in Studies of Defects in Solids. DEFECTS IN SOLIDS 1986. [DOI: 10.1007/978-1-4757-0761-8_7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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