Icosahedral phase formation in Ti68-xCr32Six alloys
Icosahedral phase formation in Ti68-xCr32Six alloys
复制标题
Ti68-xCr32Six 合金中二十面体相的形成
DOI：
10.1080/09500839008215133
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
K. Kelton
中科院分区：
文献类型：
--
作者：
X. Zhang;K. Kelton
本文首次报道了快淬Ti 68-xCr 32 Six合金中二十面体相（i相）的形成，其中69 ≤ x ≤ 18。i相出现在没有结构相似的结晶相的组合物中。透射电子显微镜（TEM）和X射线衍射测量。TEM衍射图显示出强烈的局部漫散射和斑点各向异性。这些功能进行了比较，发现类似的Al 83 Cr 17和Ti 61 Mn 37 Si 2二十面体相。没有证据表明，相变的一个crampic签名被发现加热到熔化温度后，表明i相至少是强亚稳的。报告的密度的第一个估计。
Abstract We report, for the first time, the formation of the icosahedral phase (i-phase) in rapidly quenched Ti68-xCr32Six alloys, where 69 ≤ x ≤ 18. The i-phase occurs at a composition for which there are no structurally similar crystalline phases. Transmission electron microscopy (TEM) and X-ray diffraction measurements are presented. The TEM diffraction patterns show strong localized diffuse scattering and spot anisotropy. These features are compared with similar ones found in Al83Cr17 and Ti61Mn37Si2 icosahedral phases. No evidence for an enthalpic signature of phase transformation was found upon heating to the melting temperature, indicating that the i-phase is at least strongly metastable. The first estimates of the density are reported.