图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构
作 者:唐仁政 田荣璋
出版时间:2009-05
定 价:320元
图书ISBN:978-7-81105-831-4
出版单位:中南大学出版社
Y.Zhang 1),D.J.Yu 1) and K.M.Wang 2) 1) Anshan Normal University,43 Pingan Street,Anshan114005,China 2) University of Science and Technology LiaoNing,Anshan114051,China
摘 要:Tensile tests were performed on iron nanopillars oriented along [001] and [110] directions at a constant temperature of 300 K through molecular dynamics simulations with an embedded-atom interatomic potential for iron.The nanopillars were stretched until yielding to investigate the onset of their plastic deformation behaviors.Yielding was found to occur through two different mechanisms for [001] and [110] tensions.In the former case,plastic deformation is initiated by dislocation nucleation at the edges of the nanopillar,whereas in the latter case by phase transformation inside the nanopillar.The details during the onset of plastic deformation under the two different orientations were analyzed.The varying mechanisms during plastic deformation initiation are bound to influence the mechanical behavior of such nanoscale materials,especially those strongly textured.
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