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首页> 外文会议>Symposium on Integrative and Interdisciplinary Aspects of Intermetallics >Crystal Structure, Phase Stability and Plastic Deformation Behavior of Ti-rich Ni_3(Ti,Nb) Single Crystals with Various Long-Period Ordered Structures
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Crystal Structure, Phase Stability and Plastic Deformation Behavior of Ti-rich Ni_3(Ti,Nb) Single Crystals with Various Long-Period Ordered Structures

机译：具有各种长期有序结构的Ti富含Ni_3（Ti，Nb）单晶的晶体结构，相位稳定性和塑性变形行为

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摘要

In Ni-Ti-Nb ternary system, there are some geometrically close-packed (GCP) phases with long-period stacking sequences of a close-packed plane (CPP). Among them, our focus is on the Ni_3(Ti_(0.90)Nb_(0.10)) crystals with Pb_3Ba-type rhombohedral structure with nine-fold stacking sequence. Compression tests were conducted using the single crystals and the temperature and orientation dependences of plastic deformation behavior were investigated in comparison with those of D0_(24)-Ni_3Ti crystals with the four-fold stacking sequence. The K-W locking of screw dislocation was found to occur not only in the compounds such as Ni_3Al and Ni_3Ti with a relatively small unit cell, but also even in complex compounds with longer-period stacking structures by slip on the common CPP in the GCP structures.
机译：在NI-TI-NB三元系统中，存在一些几何闭合包装（GCP）阶段，具有近填充平面（CPP）的长期堆叠序列。 其中，我们的重点是Ni_3（Ti_（0.90）Nb_（0.10））晶体，PB_3BA型菱形结构具有9倍堆叠序列。 使用单晶进行压缩试验，与具有四折叠序列的D0_（24）-NI_3TI晶体相比，研究了塑性变形行为的温度和取向依赖性。 发现螺旋错位的K-W锁定不仅在诸如Ni_3Al和Ni_3TI的化合物中发生，而且也是在具有相对较小的单位堆叠结构的复杂化合物中，通过滑动在GCP结构中的公共CPP上。

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