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Cr元素對(duì)Ti-V-Cr系阻燃鈦合金熱暴露力學(xué)性能的影響
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TG146.23

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國(guó)家重點(diǎn)項(xiàng)目 , 國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)


Effect of Alloying Element Cr on Mechanical Properties of Ti-V-Cr System Burn Resistant Alloy after Thermal Exposure
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    摘要:

    研究了Ti-25V-15Cr-0.2Si和Ti-25V-10Cr-0.2Si兩種阻燃鈦合金在不同熱暴露條件下的熱穩(wěn)定性能.結(jié)果表明:Cr元素對(duì)Ti-V-Cr系阻燃鈦合金的組織有較強(qiáng)細(xì)化作用,強(qiáng)化合金室溫力學(xué)性能;隨Cr元素含量的降低,合金在熱暴露過(guò)程中析出的第二相減少,合金熱穩(wěn)定性能優(yōu)化.此實(shí)驗(yàn)現(xiàn)象與Cr元素在鈦合金中屬于共析元素的性質(zhì)有關(guān).

    Abstract:

    Two alloys of Ti-25V-15Cr-0.2Si and Ti-25V-10Cr-0.2Si with different content of alloying element Cr after different thermal exposure were studied. The results show that Cr could refine the grain of Ti-V-Cr bum resistant alloy, and strengthen its mechanical property at room temperature. With the decrease of Cr, the amount of the second precipitation phase is reduced and the thermal stability of alloy becomes better, which can be interpreted by the eutectoid feature of alloying element Cr in titanium alloy.

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辛社偉,趙永慶,曾衛(wèi)東,楊海瑛,吳歡,李倩. Cr元素對(duì)Ti-V-Cr系阻燃鈦合金熱暴露力學(xué)性能的影響[J].稀有金屬材料與工程,2008,37(2):232~235.[Xin Shewei, Zhao Yongqing, Zheng Weidong, Yang Haiying, Wu Huan, Li Qian. Effect of Alloying Element Cr on Mechanical Properties of Ti-V-Cr System Burn Resistant Alloy after Thermal Exposure[J]. Rare Metal Materials and Engineering,2008,37(2):232~235.]
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  • 收稿日期:2007-01-31
  • 最后修改日期:2007-04-25
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