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首页> 外文期刊>Philosophical Magazine Letters >Mechanically driven grain boundary relaxation: a mechanism for cyclic hardening in nanocrystalline Ni
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Mechanically driven grain boundary relaxation: a mechanism for cyclic hardening in nanocrystalline Ni

机译：机械驱动的晶界弛豫：纳米晶镍中循环硬化的机制

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Molecular dynamics simulations are used to show that cyclic mechanical loading can relax the non-equilibrium grain boundary (GB) structures of nanocrystalline metals by dissipating energy and reducing the average atomic energy of the system, leading to higher strengths. The GB processes that dominate deformation in these materials allow low-energy boundary configurations to be found through kinematically irreversible structural changes during cycling, which increases the subsequent resistance to plastic deformation.View full textDownload full textKeywordsnanocrystalline materials, mechanical properties, grain boundary relaxation, molecular dynamics, plastic deformationRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2011.619507
机译：分子动力学模拟用于表明，循环机械负载可以通过耗散能量和降低系统的平均原子能来放松纳米晶金属的非平衡晶界（GB）结构，从而提高强度。主导这些材料变形的GB工艺允许通过循环过程中运动学上不可逆的结构变化找到低能边界构型，从而增加了随后对塑性变形的抵抗力。查看全文下载全文关键词纳米晶材料，力学性能，晶界弛豫，分子动力学，塑性变形相关var addthis_config = {ui_cobrand：“泰勒和弗朗西斯在线”，servicescompact：“ citeulike，netvibes，twitter，technorati，delicious，linkedin，facebook，stumbleupon，digg，google，更多”，发布：“ ra-4dff56cd6bb1830b” };添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2011.619507

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