Interactions between La2O3 particles and dislocations in Mo-La2O3 alloys - 文章详情页

作者：

Zhang, J.X. (Zhang, J.X..) | Liu, D.M. (Liu, D.M..) (学者：刘丹敏) | Liu, Y.Q. (Liu, Y.Q..) | Zhou, M.L. (Zhou, M.L..) | Zuo, T.Y. (Zuo, T.Y..) (学者：左铁镛)

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EI Scopus

摘要：

The　mechanical　properties　of　molybdenum　wires　doped　with　different　contents　of　La2O3　were　investigated　systematically　and　the　interaction　between　La2O3　particles　with　dislocations　in　Mo-La2O3　wires　were　observed　by　SEM　and　TEM.　It　is　shown　that　Mo-La2O3　wires　possess　much　higher　tensile　strength　than　the　pure　Mo.　In　wires　the　dislocation　motion　is　strongly　hindered　by　La2O3　particles,　which　remains　up　to　much　higher　temperature.　Moreover,　a　number　of　prismatic　dislocation　loops　and　hexagonal　dislocation　network　have　been　formed　in　annealed　Mo-La2O3　wires.　The　higher　strength　of　Mo-La2O3　than　the　pure　Mo　is　attributed　to　the　La2O3　particles　dispersion　strengthening　and　dislocation　strengthening.

关键词：

Annealing Dislocations (crystals) Doping (additives) Lanthanum compounds Mechanical properties Molybdenum alloys Strengthening (metal) Strength of materials Temperature Tensile strength Wire

作者机构：

[ 1 ] [Zhang, J.X.]Laboratory of Advanced Functional Materials, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Liu, D.M.]Laboratory of Advanced Functional Materials, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Liu, Y.Q.]Laboratory of Advanced Functional Materials, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Zhou, M.L.]Laboratory of Advanced Functional Materials, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Zuo, T.Y.]Laboratory of Advanced Functional Materials, Beijing University of Technology, Beijing 100022, China

通讯作者信息：

[zhang, j.x.]laboratory of advanced functional materials, beijing university of technology, beijing 100022, china

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