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Hastelloy C-276合金Σ3晶界和Σ9晶界隨著退火時(shí)間的演變規(guī)律
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北京有色金屬研究總院加工事業(yè)部,北京有色金屬研究總院加工事業(yè)部,北京有色金屬研究總院加工事業(yè)部,東北大學(xué)軋制技術(shù)及連軋自動(dòng)化國(guó)家重點(diǎn)實(shí)驗(yàn)室

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The influence of annealing time on Σ3 boundary and Σ9 boundary evolutions in Hastelloy C-276
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Beijing General Research Institute for Nonferrous Metals,Beijing General Research Institute for Nonferrous Metals,Beijing General Research Institute for Nonferrous Metals,The State key laboratory of rolling and automation,Northeastern University

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National High-Tech Research and Development Program of China, “863” Program (2012AA050304)

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    摘要:

    Hastelloy C-276合金經(jīng)小變形量冷軋后進(jìn)行1100℃不同時(shí)間的退火處理。采用EBSD技術(shù)對(duì)Σ3和Σ9晶界比例進(jìn)行統(tǒng)計(jì),同時(shí)采用五參數(shù)法對(duì)Σ3和Σ9晶界面分布進(jìn)行分析。結(jié)果表明,Σ3晶界隨著退火時(shí)間的延長(zhǎng)更加接近于標(biāo)準(zhǔn)重合點(diǎn)陣晶界取向,而其晶界面更加接近于低能量的{111}晶界面。這一結(jié)果符合晶界“微調(diào)”機(jī)制。Σ9晶界面分布則越來(lái)越集中在[110]晶帶。而偏差較大的Σ9晶界比例增加,是由于非共格Σ3比例的增加導(dǎo)致的。

    Abstract:

    Hastelloy C-276 was subjected to low strain deformation and annealed at 1100°C for different times. The Σ3 and Σ9 boundary percentages and grain boundary plane distributions were characterized by electron back-scatter diffraction (EBSD) and the five-parameter analysis method. The results shown that the Σ3 boundary was evolving towards a more exact coincident-site lattice (CSL) misorientation and the Σ3 boundary plane was more close to low surface energy plane {111} with extended annealing time. This is consistent with fine tuning mechanism. While the population of incoherent Σ3 boundary was increasing, the proportion of Σ9 boundary with larger deviations would be increasing. And the distributions of grain boundary density planes forΣ9 boundary were more intensive on the whole [110] zone.

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張曉宇,李德富,郭勝利,趙憲明. Hastelloy C-276合金Σ3晶界和Σ9晶界隨著退火時(shí)間的演變規(guī)律[J].稀有金屬材料與工程,2016,45(9):2253~2257.[ZHANG Xiaoyu, LI Defu, GUO Shengli, ZHAO Xianming. The influence of annealing time on Σ3 boundary and Σ9 boundary evolutions in Hastelloy C-276[J]. Rare Metal Materials and Engineering,2016,45(9):2253~2257.]
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  • 收稿日期:2015-11-25
  • 最后修改日期:2016-01-15
  • 錄用日期:2016-02-24
  • 在線(xiàn)發(fā)布日期: 2016-10-09
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