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高度穩(wěn)定化β型Ti40阻燃鈦合金的動(dòng)態(tài)再結(jié)晶行為
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國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“973”計(jì)劃)(2007CB613807)及國家科技支撐計(jì)劃(2007BAE07B01)


Dynamic Recrystallization Behavior of Highly Stabilized β Ti40 Titanium Alloy
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    摘要:

    采用熱壓縮試驗(yàn)方法,對(duì)高度穩(wěn)定化的β型Ti40阻燃鈦合金的動(dòng)態(tài)再結(jié)晶行為進(jìn)行了研究。結(jié)果表明,Ti40合金的動(dòng)態(tài)再結(jié)晶形核機(jī)制為亞晶形核、晶界弓出形核和位錯(cuò)塞積形核等多種機(jī)制;Ti40合金高溫塑性變形后,空冷及850 ℃退火的再結(jié)晶晶粒呈現(xiàn)混晶現(xiàn)象;1000 ℃退火,再結(jié)晶晶粒充分長大,是完全再結(jié)晶的結(jié)構(gòu)特征。

    Abstract:

    Dynamic recrystallization behavior of Ti40 burn-resistant alloy, a highly stabilized β titanium alloy, was researched by hot compression test. The results indicate that the nucleation mechanism of dynamic recrystalization of Ti40 alloy includes subgrain nucleation, initial grain boundary bulging nucleation and dislocation pile-up nucleation. After high temperature plastic deformation, air-cooling and annealing at 850 ℃, the recrystallization grains of the alloy present mixed grain structure. Recrystallization grains grow sufficiently after the alloy is annealed at 1000 ℃, which is whole recrystallization structure.

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趙永慶,舒 瀅,曾衛(wèi)東,吳瑋璐,吳 歡,周義剛,楊海瑛,李 倩.高度穩(wěn)定化β型Ti40阻燃鈦合金的動(dòng)態(tài)再結(jié)晶行為[J].稀有金屬材料與工程,2009,38(8):1432~1436.[Zhao Yongqing, Shu Ying, Zeng Weidong, Wu Weilu, Wu Huan, Zhou Yigang, Yang Haiying, Li Qian. Dynamic Recrystallization Behavior of Highly Stabilized β Ti40 Titanium Alloy[J]. Rare Metal Materials and Engineering,2009,38(8):1432~1436.]
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  • 收稿日期:2008-07-26
  • 最后修改日期:2009-06-25
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