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鈦中氘致裂紋的原位研究
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作者單位:

1.表面物理與化學(xué)重點(diǎn)實(shí)驗(yàn)室;2.西華大學(xué)

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TI9333

基金項(xiàng)目:

National Magnetic Confinement Fusion Energy Research Project (No. 2015GB109002) from Ministry of Science and Technology of China.the National Nature Science Foundation of China (No. 21401173).


In-situ investigation on deuterium induced cracking of titanium
Author:
Affiliation:

1.a Science and Technology on Surface Physics and Chemistry Laboratory;2.a School of Sciences and Research Center for Advanced Computation, Xihua University

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    摘要:

    采用熱臺顯微鏡(HSM)和壓力-體積-溫度(PVT)相結(jié)合的方法原位研究了鈦在恒定溫度及升溫過程中的氘致裂紋(DIC)現(xiàn)象。在550℃恒溫吸氘過程中，鈦片表面只出現(xiàn)很少的裂紋；而在由室溫升溫至550℃吸氘過程中鈦表面出現(xiàn)了由邊緣向中心部分?jǐn)U展的環(huán)狀裂紋。鈦在升溫過程中的形貌變化特征與“邊緣進(jìn)攻”模型符合；X射線光電子能譜(XPS)測試顯示，由鈦氧化物、碳化物和氮化物組成的鈦表面鈍化層在環(huán)狀裂紋形成過程中發(fā)揮了重要作用。

    Abstract:

    Deuterium (D) induced cracking (DIC) of Ti was in-situ investigated by the hot stage microscope (HSM) technique combined with the pressure-volume-temperature (PVT) method. Only several cracks were observed on the surface of Ti upon exposure of D2 at 550℃, while more unique circular cracks appeared when Ti was heated from room temperature up to 550℃ in the D2 atmosphere. The morphology changes of Ti induced by deuterium during heating is consistent with the characteristics described by the preferred edge-attack model. X-ray photoelectron spectroscopy (XPS) measurements indicated that the surface passivation layer on Ti, mainly consisting of titanium oxides, carbides and nitrides, played an important role in the formation of circular cracks.

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葉小球,肖瑤,吳吉良,楊蕊竹,王雪峰,羅德禮.鈦中氘致裂紋的原位研究[J].稀有金屬材料與工程,2021,50(2):389~395.[Xiaoqiu Ye, Yao Xiao, Jiliang Wu, Ruizhu Yang, Xuefeng Wang, Deli Luo. In-situ investigation on deuterium induced cracking of titanium[J]. Rare Metal Materials and Engineering,2021,50(2):389~395.]
DOI：10.12442/j. issn.1002-185X.20200085

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  • 收稿日期:2020-02-14
  • 最后修改日期:2020-05-19
  • 錄用日期:2020-05-27
  • 在線發(fā)布日期: 2021-03-09
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