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首页> 外文期刊>Materials Science and Engineering >Evolution of the Burgers-vector population of Cu-Nb multilayers with 7 at% He-implantation determined by X-ray diffraction
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Evolution of the Burgers-vector population of Cu-Nb multilayers with 7 at% He-implantation determined by X-ray diffraction

机译:X射线衍射测定He原子注入量为7at%的Cu-Nb多层膜的Burgers-载体种群的演化

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摘要

Extreme environmental conditions have received considerable attention in the last decade in relation to extending lifetime of materials or developing novel capabilities to achieve a higher endurance. Extreme mechanical properties or the extremely high resistance to irradiation are in the limelight. In the present paper, the He implantation-induced lattice-defect structure of Cu/Nb multilayers with different nominal layer widths is investigated based on the evolution of the prevailing Burgers-vector population, the corresponding dislocation density and a varying coherency length. The virgin and the implanted state can be characterized by using individual dislocation contrast factors in the two different phases. After He implantation, the prevailing microstructure displays a majority of out-of-plane, screw-type dislocations in the developed lattice-defect structure.
机译:在过去的十年中,关于延长材料的使用寿命或开发新颖的功能以实现更高的耐久性,极端环境条件受到了相当大的关注。极高的机械性能或极高的耐辐照性成为人们关注的焦点。在本文中,基于主要的汉堡向量载体的演化,相应的位错密度和变化的相干长度,研究了He注入诱导的具有不同标称层宽的Cu / Nb多层晶格缺陷结构。原始状态和植入状态可以通过在两个不同阶段使用单独的位错对比因子来表征。 He注入后,主要的微观结构在已形成的晶格缺陷结构中显示出大部分平面外的螺旋型位错。

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