& lt; i> Situ< / i>同步加速器x射线分析:高压滑动过程在钛同素异向相变中的应用

IF 0.5 4区 材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING
Zenji Horita, Daisuke Maruno, Yukimasa Ikeda, Takahiro Masuda, Yongpeng Tang, Makoto Arita, Yuji Higo, Yoshinori Tange, Yasuo Ohishi
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引用次数: 0

摘要

本研究利用日本同步辐射研究所(JASRI)的SPring-8进行了高压滑动剧烈塑性变形(HPS)的原位高能x射线衍射分析。利用小型HPS装置,从温度、压力和施加应变等方面研究了纯Ti的同素异形体转变。施加在样品上的真实压力由峰值位移估计。利用白x射线减少了局部压力变化引起的峰展宽。在~ 4.5 GPa的压力下,从α相转变为ω相。HPS应变处理能有效促进合金向ω相转变,并在常温下仍能保持ω相。在环境压力下,ω相向α相的反向转变发生在温度为~ 110℃时,而在更高的压力(~ 4 GPa)下,ω相即使在本研究覆盖的~ 170℃也保持稳定。从ω相到α相的反向转变是由热能控制的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
<i>In Situ</i> Synchrotron X-ray Analysis: Application of High-Pressure Sliding Process to Ti Allotropic Transformation
In this study, severe plastic deformation through high-pressure sliding (HPS) was applied for in situ high-energy X-ray diffraction analysis at SPring-8 in JASRI (Japan Synchrotron Radiation Research Institute). Allotropic transformation of pure Ti was examined in terms of temperatures, pressures and imposed strain using a miniaturized HPS facility. The true pressure applied on the sample was estimated from the peak shift. Peak broadening due to local variation of pressure was reduced using white X-ray. The phase transformation from α phase to ω phase occurred at a pressure of ∼4.5 GPa. Straining by the HPS processing was effective to promote the transformation to the ω phase and to maintain the ω phase even at ambient pressure. The reverse transformation from ω phase to α phase occurred at a temperature of ∼110℃ under ambient pressure, while under higher pressure as ∼4 GPa, the ω phase remained stable even at ∼170℃ covered in this study. It was suggested that the reverse transformation from the ω phase to the α phase is controlled by thermal energy.
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来源期刊
Journal of The Japan Institute of Metals
Journal of The Japan Institute of Metals 工程技术-冶金工程
CiteScore
0.70
自引率
0.00%
发文量
27
审稿时长
6-12 weeks
期刊介绍: Information not localized
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