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Ti-5553合金在輕氣炮沖擊下的變形行為
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北京理工大學 材料學院,北京理工大學 材料學院,北京航天微系統(tǒng)研究所,北京理工大學 材料學院

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TG1462+3

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沖擊環(huán)境材料技術國家級重點實驗室項目基金


The deformation behavior of near-β Ti-5553 alloy under the impact of light gas gun
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School of Materials Science and Engineering,Beijing Institute of Technology,Beijing,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing,Beijing Aerospace Research Institute of Micro Systems,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing

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    摘要:

    利用一級輕氣炮裝置，以不同速度的飛片對Ti-5553合金進行沖擊加載，采用光學顯微鏡和透射電子顯微鏡觀察并分析微觀組織和變形行為，結(jié)合XRD和定量金相研究方法進行分析和計算。結(jié)果表明，Ti-5553合金在輕氣炮沖擊下會發(fā)生位錯滑移、形變孿生和應力誘發(fā)馬氏體相變（stress-induced martensite，SIM），形成α″相。α″相的生成量受輕氣炮沖擊速度的影響，隨著沖擊速度的增大，形成的α″含量呈明顯上升趨勢，當輕氣炮沖擊速度由380m/s上升到560m/s時，單位面積α″線的長度LA由39.18mm/mm2上升到52.65mm/mm2。

    Abstract:

    The deformation behavior of near-β Ti-5553 alloy under the impact of light gas gun has been studied by optical microscopy (OM) combined with quantitative metallographic analysis, transmission electron microscope (TEM) and X-Ray Diffraction (XRD). The experimental results demonstrated that Ti-5553 alloy deform via dislocation slipping，deformation twinning and stress-induced martensite (SIM) phase transformation. Meanwhile, the amount of SIM is influenced by the velocity of flyer plates by which Ti-5553 alloy was impacted. The amount of SIM increased obviously as the impact velocity increased. Particularly, when the velocity increased from 380m/s to 560m/s, the length of the SIM wire per unit area (LA) increased from 39.18mm/mm2 to 52.65 mm/mm2.

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代華湘,王琳,徐欣,王丁. Ti-5553合金在輕氣炮沖擊下的變形行為[J].稀有金屬材料與工程,2018,47(2):657~661.[Dai Hua-xiang, Wang Lin, Xu Xin, Wang Ding. The deformation behavior of near-β Ti-5553 alloy under the impact of light gas gun[J]. Rare Metal Materials and Engineering,2018,47(2):657~661.]
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  • 收稿日期:2015-12-10
  • 最后修改日期:2016-03-14
  • 錄用日期:2016-03-29
  • 在線發(fā)布日期: 2018-03-15
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