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首页> 外文会议>Pacific Rim International Conference on Advanced Materials and Processing(PRICM 5) pt.1; 20041102-05; Beijing(CN) >Investigation on a Fabrication Technique of TiAl Sheet
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Investigation on a Fabrication Technique of TiAl Sheet

机译：TiAl板的制备技术研究

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摘要

A TiAl sheet fabrication technique from Ti/Al foils was studied experimentally. Firstly, the reaction sequence between Ti and Al foils were studied with DSC and then a three stage solid transformations processing was carried out. At the first stage, Al diffused into Ti foils and formed Al_3Ti. The heating temperature was selected based on a ruler that the pure Al was consumed by solid diffusion with a short time and avoiding the melting of Al. The resulted microstructure consists of pure Ti and Al_3Ti. At the second stage, part of Al in Al_3Ti diffused into pure Ti and formed the high temperature α phase. At the third stage, the sample was heated into the high temperature α -phase zone and hold a given time and then cooling with the furnace. A full density γ-TiAl based alloy sheet with lamellar microstructure was successfully fabricated under above processing. The lamellar orientations are aligned around 0-45° compared to the longitudinal direction of the sheet.
机译：实验研究了由Ti / Al箔制成的TiAl片材制造技术。首先，用DSC研究了钛箔和铝箔之间的反应顺序，然后进行了三阶段的固相转化处理。在第一阶段，Al扩散到Ti箔中并形成Al_3Ti。根据尺子选择纯铝，避免在短时间内通过固相扩散消耗纯铝，从而避免熔化。所得的微观结构由纯Ti和Al_3Ti组成。在第二阶段，Al_3Ti中的一部分Al扩散成纯Ti，并形成高温α相。在第三阶段，将样品加热到高温α相区并保持给定时间，然后用炉子冷却。通过上述工艺成功地制备了具有层状微结构的全密度γ-TiAl基合金薄板。与片材的纵向相比，层状取向在约0-45°处对准。

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