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Ti-1300合金的非等温ω相变研究
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贵州大学 材料与冶金学院,西北有色金属研究院,贵州大学 材料与冶金学院

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TG113.12

基金项目:

国家自然科学(51401058);贵州省科技联合资金项目(黔科合LH字[2015]7655号);贵州省优秀青年科技人才培养对象项目(201315);贵州省重大专项(黔科合重大专项字[2014]6013)


Study on Non-thermal ω Phase Transformation of Ti-1300 Alloy
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College of Materials and Metallurgy,Guizhou University,,College of Materials and Metallurgy,Guizhou University

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    摘要:

    通过膨胀法研究了Ti-1300合金在连续加热过程中ω相变。结果表明:Ti-1300合金在连续加热过程中低温区域发生了βM→ω+β相变,高温区域发生了βM→α+β相变,随着加热速率增大,βM→ω+β相变温度范围推向高温区域;ω相的体积转变分数与温度之间关系曲线呈典型的‘S’型;非等温ω相变的激活能随着转变体积分数增大而增加,相变阻力增大,平均相变激活能约55kJ/mol。

    Abstract:

    The ω phase transformation of Ti-1300 alloy during continuous heating was investigated using dilatometric method. Results show the βM→ω+β phase transformation happenes in low temperature zone, but the βM→α+β phase transformation happenes in high temperature zone during continuous heating. The temperature region of the β→ω phase transformation in the Ti-1300 alloy increased with increasing heating rate. The curves of ω phase transformed volume fraction and temperature at different heating rates exhibited a typical ‘S’ pattern. The activation energy of non-thermal ω phase transformation increased as increasing of ω phase transforming volume fraction, which added to precipitating resistance of ω phase. The average activation energy of the non-thermal ω phase transformation of the alloy was 55 kJ/mol.

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万明攀,赵永庆,雷旻. Ti-1300合金的非等温ω相变研究[J].稀有金属材料与工程,2018,47(5):1466~1470.[Wan Mingpan, Zhao Yongqing, Lei Min. Study on Non-thermal ω Phase Transformation of Ti-1300 Alloy[J]. Rare Metal Materials and Engineering,2018,47(5):1466~1470.]
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历史
  • 收稿日期:2016-04-20
  • 最后修改日期:2016-10-24
  • 录用日期:2016-11-10
  • 在线发布日期: 2018-06-08
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