Heterogeneous Precipitation in 1424 Al–Mg–Li Alloy

机译：1424 Al–Mg–Li合金中的非均相沉淀

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Heterogeneous precipitation on grain and subgrain boundaries of 1424 alloy sheets hasrnbeen studied within the present work. The presence of different phase structuralrnprecipitations is typical for the grain and subgrain boundaries in addition to equilibrium S1rn(Al2LiMg) phase. In particular, ranges, containing superfine grains are revealed.rnFormation of these structures is determined by the electron-structural state of lithiumrnatom in Al-Li alloys. There are three of those states. These are substitutional atoms,rnhaving a covalent bond with close aluminium atom – covalent lithium; substitutionalrnatoms as Li+ ion – metallic lithium and interstitial atoms as Li+ ion – interstitial lithium. The phase composition and structure of heterogeneous precipitations depends on therndeformation and heat treatment regimes. Taking into a consideration all the three statesrnof lithium atoms mechanism of those structures formation has been considered.

机译：在本工作中，已经研究了1424合金薄板的晶粒和亚晶粒边界上的非均相沉淀。除了平衡的S1rn（Al2LiMg）相以外，晶界和亚晶界还存在不同的相结构沉淀。特别是揭示了含有超细晶粒的范围。这些结构的形成取决于Al-Li合金中锂原子的电子结构态。其中有三个州。这些是取代原子，与紧密的铝原子具有共价键-共价锂；取代原子为Li +离子-金属锂，间隙原子为Li +离子-间隙锂。非均相沉淀的相组成和结构取决于变形和热处理方式。考虑到所有三个状态的锂原子，这些结构形成的机理已经被考虑。

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来源
《Materials forum - aluminium alloys, their physical and mechanical properties - Volume 28 - 2004》|2004年|711-717|共7页
会议地点 Brisbane(AU)
作者
L.B. Khokhlatova; A.A. Alekseev; E.A. Lukina;
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作者单位

FSUE "All–Russian Scientific-Research Institute of Aviation Materials", 17 Radio street, Moscow, Russia;

FSUE "All–Russian Scientific-Research Institute of Aviation Materials", 17 Radio street, Moscow, Russia;

FSUE "All–Russian Scientific-Research Institute of Aviation Materials", 17 Radio street, Moscow, Russia;

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正文语种 eng
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关键词
grain; fibre; covalent lithium; metallic lithium; interstitial lithium; superfine grain structure;

机译：粮食;纤维;共价锂金属锂；间隙锂超细晶粒结构;

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Heterogeneous Precipitation in 1424 Al–Mg–Li Alloy

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