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中间道次退火对Ti-3Al-2.5V管材组织和性能的影响

朱小勇 邢远 江健 王莹 栾佰峰

朱小勇, 邢远, 江健, 王莹, 栾佰峰. 中间道次退火对Ti-3Al-2.5V管材组织和性能的影响[J]. 钢铁钒钛, 2023, 44(3): 45-51. doi: 10.7513/j.issn.1004-7638.2023.03.007
引用本文: 朱小勇, 邢远, 江健, 王莹, 栾佰峰. 中间道次退火对Ti-3Al-2.5V管材组织和性能的影响[J]. 钢铁钒钛, 2023, 44(3): 45-51. doi: 10.7513/j.issn.1004-7638.2023.03.007
Zhu Xiaoyong, Xing Yuan, Jiang Jian, Wang Ying, Luan Baifeng. Effect of intermediate pass annealing on the microstructures and properties of Ti-3Al-2.5V tubes[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 45-51. doi: 10.7513/j.issn.1004-7638.2023.03.007
Citation: Zhu Xiaoyong, Xing Yuan, Jiang Jian, Wang Ying, Luan Baifeng. Effect of intermediate pass annealing on the microstructures and properties of Ti-3Al-2.5V tubes[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 45-51. doi: 10.7513/j.issn.1004-7638.2023.03.007

中间道次退火对Ti-3Al-2.5V管材组织和性能的影响

doi: 10.7513/j.issn.1004-7638.2023.03.007
详细信息
  • 中图分类号: TF823,TG166.5

Effect of intermediate pass annealing on the microstructures and properties of Ti-3Al-2.5V tubes

  • 摘要: 冷轧态及退火态样品的微观组织采用EBSD和TEM进行表征,进而探究Ti-3Al-2.5V管材在热处理过程中的再结晶过程,通过极图和反极图分析了不同热处理过程中织构的变化。试验结果表明,在低于580 ℃热处理时,此阶段冷轧管材主要发生回复,微观组织以变形组织为主,管材完全再结晶过程在750 ℃热处理时才会出现。分析表明,管材冷轧形成了沿周向(TD)方向倾斜的基面双峰织构,随热处理温度升高,基面双峰织构类型并未改变,而再结晶织构<$ { 11{\bar 2}0 }$>//AD逐渐取代<$ {10{\bar 1}0} $>//AD形变织构。合金管材在620~650 ℃温度范围内退火时,力学性能发生明显变化,这主要归因于在此温度敏感区间内,随着温度升高再结晶程度急剧增大。
  • 图  1  管材变形态及在550~800 ℃热处理1 h的EBSD反极图

    Figure  1.  EBSD pole of tubes after heat treatment at 550~800 ℃ for 1 h

    图  2  管材冷轧态及在系列温度下退火1 h后再结晶组织分布

    Figure  2.  Distribution of the recrystallized microstructures of tubes after deformation and 1 h annealing at successive temperatures

    图  3  管材在系列温度下热处理1 h的形变组织、亚结构和再结晶比例

    Figure  3.  Deformation structure, substructure and recrystallization scale diagrams of tubes after 1 h heat treatment at various temperatures

    图  4  管材在620 ℃热处理1 h的TEM组织特征

    Figure  4.  TEM characteristics of tubes thermally treated at 620 ℃ for 1 h

    图  5  管材在800 ℃热处理1 h的TEM组织特征

    Figure  5.  TEM characteristics of tubes thermally treated at 800 ℃ for 1 h

    图  6  管材不同晶面的极图

    Figure  6.  The pole figure of the different crystal planes of tubes

    图  7  管材沿AD方向的反极图

    (a)变形态(b)550 ℃-1 h(c)580 ℃-1 h(d)620 ℃-1 h(e)650 ℃-1 h(f)700 ℃-1 h(g)750 ℃-1 h(h)800 ℃-1 h

    Figure  7.  Inverse pole figure of the tube along AD direction

    图  8  管材变形态和系列温度热处理1 h后的显微硬度

    Figure  8.  Microhardness after deformation and heat treatment at various temperatures for 1 h

    表  1  TA18管材化学成分

    Table  1.   Chemical composition of TA18 tubes %

    AlVFeCNOHTi
    2.5~3.52.0~3.00.300.050.0250.120.015余量
    下载: 导出CSV
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  • 收稿日期:  2022-11-12
  • 刊出日期:  2023-06-30

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