Undercool-Rapid Quench Processing of Titanium Rare-Earth Alloys

采用新型材料处理系统， 液态金属从过冷状态。 该设施包括 在落管中的电磁悬浮和自由下落， 在真空环境中通过熔融纺丝固化。 选择了一组钛/稀土合金作为研究对象 因为之前的研究表明 深层快速凝固后的显微组织改善 过冷状态 实验方法包括三个 阶段：（1）材料评价;（2）过冷和吸热 模型;（3）超快速淬火处理与固结 批量样品。 扫描和透射电子显微镜 用于表征样品。 %%% 这种过冷快速淬火处理系统可以扩大规模 用于商业化。 这项研究应允许评估 该工艺对一系列钛合金的好处，如 并提供有关该过程的科学信息。

A new materials processing system is used to rapidly solidify liquid metal from an undercooled state. This facility incorporates electromagnetic levitation and free fall in a drop tube with rapid solidification by melt spinning in an ultrahigh vacuum environment. A set of titanium/rare-earth alloys has been selected for study because previous research has demonstrated significant microstructural improvement after rapid solidification from a deep undercooled condition. The experimental method consists of three phases: (1) materials evaluation; (2) undercooling and recalescence modeling; and (3) ultra-rapid quench processing with consolidation into bulk samples. Scanning and transmission electron microscopy are used to characterize the samples. %%% This undercool-rapid quench processing system could be scaled up for commercialization. This research should permit the evaluation of the benefits of the process for a series of titanium alloys, as well as supplying scientific information on the process.