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Forming abilities of monatomic chains of several fcc and bcc metals in different crystallographic orientations

机译:几种fcc和bcc金属在不同晶体学取向上的单原子链形成能力

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The forming abilities of monatomic chains (MC) of several fcc and bcc metals stretched in three principal crystallographic orientations of [1 1 1], [1 0 0] and [1 1 0] are analyzed in terms of a ratio between Peierls stress of a bulk crystal with dislocations (tau(p)) and theoretical shear stress of a monatomic chain (tau(m)). It is found that the structure and orientation dependent tau(m)/tau(p) values are proportional to the forming abilities of MC while tau(m)/tau(p) is a function of Possion's ratio v. The above considerations are in agreement with known experimental and simulation results of Au. In addition, Nb as a candidate for MC formation is suggested. (c) 2005 Elsevier B.V. All rights reserved.
机译:以[1 1 1],[1 0 0]和[1 1 0]的三个主要晶体学取向拉伸的几种fcc和bcc金属的单原子链(MC)的形成能力进行了分析。具有位错(tau(p))和单原子链理论剪切应力(tau(m))的块状晶体。发现与结构和方向有关的tau(m)/ tau(p)值与MC的形成能力成正比,而tau(m)/ tau(p)是位置比率v的函数。与已知的金的实验和模拟结果一致。另外,建议使用Nb作为MC形成的候选物。 (c)2005 Elsevier B.V.保留所有权利。

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