Evidence of Chemical Short Range Order in Molten CuTi Alloys
作者:
He. Fenglai,
N. Cowlam,
G.E. Carr,
J.B. Suck,
期刊:
Physics and Chemistry of Liquids
(Taylor Available online 1986)
卷期:
Volume 16,
issue 2
页码: 99-112
ISSN:0031-9104
年代: 1986
DOI:10.1080/00319108608078506
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Neutron diffraction measurements have been made on a series of four CuTi molten alloy samples in order to determine the possible variation of chemical short range order (CSRO) with composition in the liquid state. The structure factor curvesS(Q) obtained all contain the characteristic pre-peak atQ≈ 1.9 Å−1which provides experimental evidence for the existence of CSRO. The degree of CSRO present has been estimated and the CSRO parameter α obtained from an analysis based on experimental and calculatedS(Q) curves. The observed variation of CSRO with composition in the liquid state follows the trends established from previous experiments and thermodynamic calculations. The CSRO is less developed in the melt than in the metallic glass phase.
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