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稀土Y對Ti50Ni50形狀記憶合金700℃下恒溫氧化行為的影響
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黑龍江科技大學(xué) 材料科學(xué)與工程學(xué)院,黑龍江科技大學(xué) 材料科學(xué)與工程學(xué)院,黑龍江科技大學(xué) 材料科學(xué)與工程學(xué)院,黑龍江科技大學(xué) 材料科學(xué)與工程學(xué)院,黑龍江科技大學(xué) 材料科學(xué)與工程學(xué)院,哈爾濱工業(yè)大學(xué)

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TG139.6 TG146.45

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國家自然科學(xué)基金項目（面上項目，重點項目，重大項目）


Effect of Y addition on the isothermal oxidation behaviour of a Ti50Ni50 shape memory alloy at 700℃
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College of Material Science and Engineering,Heilongjiang University of Science and Technology,Harbin,College of Material Science and Engineering,Heilongjiang University of Science and Technology,Harbin,College of Material Science and Engineering,Heilongjiang University of Science and Technology,Harbin,College of Material Science and Engineering,Heilongjiang University of Science and Technology,Harbin,College of Material Science and Engineering,Heilongjiang University of Science and Technology,Harbin,School of Materials Science and Engineering,Harbin Institute of Technology,Harbin

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    摘要:

    本文研究了添加Y對等原子比TiNi形狀記憶合金顯微組織和700℃恒溫氧化行為的影響。結(jié)果表明加入稀土Y細(xì)化了TiNi合金的晶粒尺寸。Y含量為0.5和1%時Y的加入顯著降低了Ti-Ni合金的氧化速率。然而當(dāng)Y含量為5at%時,含Y的Ti-Ni合金的氧化速率增大

    Abstract:

    The effect of Y addition on the microstructure and isothermal oxidation behaviour of an equal-atomic Ti-Ni shape memory alloy at 700 ℃ in air was investigated. The results showed that the microstructure of Ti50Ni50 alloy was changed obviously with Y addition and the grains of Ti-Ni alloy was evidently refined. The oxidation rate was significantly reduced by the addition of 0.5 at. %Y and 1.0 at. %Y due to the inhibition of the fast outward diffusion of Ti by the segregated Y ions. However, the oxidation rate was increased by 5 at.%Y addition since the formation of oxide along the Y-rich phase broke the continuity of the TiO2 scale.

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徐家文,劉愛蓮,王淑花,周月波,張鶴,蔡偉.稀土Y對Ti50Ni50形狀記憶合金700℃下恒溫氧化行為的影響[J].稀有金屬材料與工程,2016,45(9):2246~2252.[J. W. Xu, A. L. Liu, S. H. Wang, Y. B. Zhou, H. Zhang, W Cai. Effect of Y addition on the isothermal oxidation behaviour of a Ti50Ni50 shape memory alloy at 700℃[J]. Rare Metal Materials and Engineering,2016,45(9):2246~2252.]
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  • 收稿日期:2015-08-23
  • 最后修改日期:2016-01-14
  • 錄用日期:2016-02-24
  • 在線發(fā)布日期: 2016-10-09
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