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Rare earth elements...
Rare earth elements in alpha-Ti : A first-principles investigation
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Lu, S. (författare)
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- Hu, Qing-Miao (författare)
- KTH,Tillämpad materialfysik
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Yang, R. (författare)
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- Johansson, Börje (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Fysiska institutionen,Condensed Matter Theory Grp
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- Vitos, Levente (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Fysiska institutionen,Condensed Matter Theory Grp
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- Engelska.
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Ingår i: Computational materials science. - : Elsevier BV. - 0927-0256 .- 1879-0801. ; 46:4, s. 1187-1191
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The interaction energies between substitutional rare earth (RE) atoms, between RE and interstitial C, N, O, H atoms, as well as between RE and vacancies in alpha-Ti are calculated via first-principles density-functional theory with projector augmented-wave (PAW) pseudopotentials. The results show that the RE-vacancy and RE-RE interactions are attractive due to the weaker RE-Ti bond than the host Ti-Ti bond. All of the RE atoms investigated in this paper are repulsive to C and N, but attractive to H. RE-O interactions are repulsive for the light RE atoms, though the interactions are very weak for the heavy RE atoms. The mechanism underlying the interactions and their possible influence on the properties of Ti alloys are discussed.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- First-principles calculations
- Rare earth elements
- Interstitial
- impurities
- Titanium alloy
- strengthened titanium-alloys
- augmented-wave method
- creep-properties
- microstructure
- impurities
- particles
- hydrogen
- tensile
- energy
- metal
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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