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High-Temperature Me...
High-Temperature Mechanical and Dynamical Properties of gamma-(U,Zr) Alloys
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- Ma, Jiang-Jiang (författare)
- Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.;Spallat Neutron Source Sci Ctr SNSSC, Dongguan 523803, Peoples R China.;Shanxi Normal Univ, Sch Phys & Informat Engn, Taiyuan 030031, Peoples R China.
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- Han, Xue-Fen (författare)
- Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.;Spallat Neutron Source Sci Ctr SNSSC, Dongguan 523803, Peoples R China.;Univ Chinese Acad Sci UCAS, Beijing 100049, Peoples R China.
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- Cai, Xiao-Xiao (författare)
- Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.;Spallat Neutron Source Sci Ctr SNSSC, Dongguan 523803, Peoples R China.
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- Qiu, Ruizhi (författare)
- Sci & Technol Surface Phys & Chem Lab, Mianyang 621908, Peoples R China.
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- Eriksson, Olle, 1960- (författare)
- Uppsala universitet,Fysiska institutionen,Experimentell fysik,Fasta tillståndets fysik,Institutionen för fysik och materialvetenskap,Materialfysik,Uppsala Univ, Dept Phys & Astron Mat Theory, POB 516, SE-75120 Uppsala, Sweden.
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- Zhang, Ping (författare)
- Qufu Normal Univ, Sch Phys & Phys Engn, Qufu 273165, Peoples R China.;Inst Appl Phys & Comp Math, Beijing 100088, Peoples R China.
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- Wang, Bao-Tian (författare)
- Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.;Spallat Neutron Source Sci Ctr SNSSC, Dongguan 523803, Peoples R China.
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Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China;Spallat Neutron Source Sci Ctr SNSSC, Dongguan 523803, Peoples R China.;Shanxi Normal Univ, Sch Phys & Informat Engn, Taiyuan 030031, Peoples R China. Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.;Spallat Neutron Source Sci Ctr SNSSC, Dongguan 523803, Peoples R China.;Univ Chinese Acad Sci UCAS, Beijing 100049, Peoples R China. (creator_code:org_t)
- 2023-03-26
- 2023
- Engelska.
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Ingår i: Materials. - : MDPI. - 1996-1944. ; 16:7
- Relaterad länk:
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- High-temperature body-centered cubic (BCC) gamma-U is effectively stablized by gamma-(U,Zr) alloys that also make it feasible to use it as a nuclear fuel. However, relatively little research has focused on gamma-(U,Zr) alloys due to their instability at room temperature. The effect of Zr composition on its mechanical properties is not clear yet. Herein, we perform molecular dynamics simulations to investigate the mechanical and dynamical stabilities of gamma-(U,Zr) alloys under high temperatures, and we calculate the corresponding lattice constants, various elastic moduli, Vickers hardness, Debye temperature, and dynamical structure factor. The results showed that gamma-U, beta-Zr, and gamma-(U,Zr) are all mechanically and dynamically stable at 1200 K, which is in good agreement with the previously reported high-temperature phase diagram of U-Zr alloys. We found that the alloying treatment on ?-U with Zr can effectively improve its mechanical strength and melting points, such as Vickers hardness and Debye temperature, making it more suitable for nuclear reactors. Furthermore, the Zr concentrations in gamma-(U,Zr) alloys have an excellent effect on these properties. In addition, the dynamical structure factor reveals that gamma-U shows different structural features after alloying with Zr. The present simulation data and insights could be significant for understanding the structures and properties of UZr alloy under high temperatures.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- gamma-(U
- Zr)
- mechanical properties
- thermodynamic stability
- dynamical structural factor
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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