A study of cold-worked aluminium by an X-ray microbeam technique. I. Measurement of particle volume and misorientations
A study of cold-worked aluminium by an X-ray microbeam technique. I. Measurement of particle volume and misorientations
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X 射线微束技术对冷加工铝的研究。
DOI：
10.1107/s0365110x52000496
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发表时间：
1952
期刊：
影响因子：
--
通讯作者：
J. Kellar
中科院分区：
文献类型：
--
作者：
P. Hirsch;J. Kellar
A相结构的完整解决方案显然需要用一个小的对称形状的晶体进行非常精确的强度测量，以区分可能的空间群并精炼原子参数。本文给出了Tucker提出的F_1-U结构参数，在观测和计算的结构因子之间给出了较好的一致性，并提出在Ni-V_a相中可能有发生层结构有序化的趋势。精确的粉末数据表明，当这些值乘以适当的值时，各相的d值有很好的对应关系。作者要感谢Dr A。米。b.道格拉斯提供了铁铬相的粉末数据并提出了宝贵的批评意见，G.J.Pit t博士提供了有益的建议，W.Hume-Rothery博士对这项工作感兴趣。
A full solution of the a phase structure obviously requires very accurate intensity measurements with a small symmetrically shaped crystal to distinguish between the possible space groups and to refine the atomic parameters. In this paper the parameters proposed by Tucker for the fl-uranium structure are shown to give reasonably good agreement between observed and calculated structure factors, and it is also suggested that in the Ni-V a phase there may be a tendency for an ordering of the layer structure to take place. Accurate powder data show that a close correspondence of d values for the various ~ phases is found when these are multiplied by appropriate The authors would like to thank Dr A . M . B . Douglas for supplying the powder data for the Fe-Cr phase and for valuable criticism, Dr G. J. Pit t for helpful advice and Dr W. Hume-Rothery, F. R. S., for his interest in the work.