Structure of melt spun Ni25Ti50Cu25 ribbons studied by X-ray diffraction
Structure of melt spun Ni25Ti50Cu25 ribbons studied by X-ray diffraction
复制标题
X 射线衍射研究熔纺 Ni25Ti50Cu25 薄带的结构
DOI：
10.1051/jp4:2001858
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
H. Morawiec
中科院分区：
文献类型：
--
作者：
T. Goryczka;M. Karolus;P. Ochin;H. Morawiec
研究了NiTiCu熔体纺丝带的结构和转变行为。采用Rietveld细化法拟合非晶带和热处理带的结构。结晶后，得到B2->B19+B19′的相变序列。混合物中B19相和b9′相的分数分别等于84 wt%和16 wt%。淬火和退火引起特征温度的变化。在转变过程中，降水过程的变化是主要原因。
Structure and transformation behaviour in NiTiCu melt spun ribbons has been investigated. The structures of amorphous and heat- treated ribbons were fitted using Rietveld refinement. After crystallisation, the following transformation sequence: B2->B19+B19' was found. The fractions of B19 and Bl9' phases in a mixture is equal 84 wt% 16 wt%, respectively. Quenching and annealing causes shifts in characteristic temperatures. The precipitation process is mainly responsible for the changes in the transformation course.