Nanometer-scale structure of rapidly solidified Al92V3Fe3Zr2 alloy
Nanometer-scale structure of rapidly solidified Al92V3Fe3Zr2 alloy
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快凝Al92V3Fe3Zr2合金的纳米级结构
DOI：
10.2320/matertrans.42.1552
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发表时间：
2001
影响因子：
1.2
通讯作者：
A. Inoue
中科院分区：
文献类型：
--
作者：
T. Kamiyama;H. Kimura;K. Sasamori;A. Inoue
研究了单辊熔融纺丝快速凝固的Al - 92v3fe3zr2带的纳米级结构，其周向速度在10 ~ 50 m/s范围内。用针孔小角x射线仪检测了在周向速度大于20 m/s的情况下快速凝固的条带沿条带方向的变形散射图。变形模式可归因于近球形颗粒的排列，其中伸长的颗粒在熔体旋转引起的剪切流中解体。随着周向速度的增加，析出物的粒径减小，当周向速度为30 m/s时，析出物的析出机制发生了一些变化。
Nanometer-scale structures were examined for Al 92 V 3 Fe 3 Zr 2 ribbons rapidly solidified by a single roller melt-spinning, as a function of a circumferential velocity in the range between 10 and 50 m/s. Deformed scattering patterns along the direction of the ribbons are detected by a pinhole small-angle X-ray instrument for the ribbons rapidly solidified with the circumferential velocities higher than 20 m/s. The deformed patterns can be attributed to the rows of nearly spherical particles into which the elongated particles have disintegrated by shear flow caused by the melt spinning. Size of precipitates decreases with increasing the circumferential velocity, and some change in the precipitation mechanism is suggested to occur at a circumferential velocity of 30 m/s.