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热变形对TiB-TC25G合金组织与织构影响
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中国第二重型机械集团德阳万航模锻有限责任公司

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Effect of thermal deformation on microstructure and texture evolution of TiB-TC25G alloy
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China National Erzhong Group Deyang Wanhang Die Forging Co.,Ltd

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    摘要:

    本文对TiB改性钛合金进行了950℃的α+β两相区热压缩变形,研究了α板条的球化机制及其在不同变形量下晶体取向的变化。变形过程中α板条内部发生连续的取向积累,随着变形量的增大有大量亚结构产生,α板条的球化是连续动态再结晶的过程。α板条的球化伴随着α相与β相间Burgers取向关系被破坏,随着变形量的增大,大量非Burgersα相的产生使α相织构得到显著弱化。在动态再结晶和交滑移的协同作用下,随变形量的增大β相织构呈先增强后减弱的趋势。

    Abstract:

    The spheroidization behavior of α laths in TiB-TC25G alloy during hot working at 950 oC was investigated. The globularization process is controlled by continuous dynamic recrystallization. It can be seen that a large number of subgrain boundaries generated inside the α phases, and the continuous orientation accumulation of the α phase occurs. Coinciding with the globularization process of α phase, the Burgers orientation relationship between equiaxed α grains and neighboring β grains has been destroyed and results in a weakened texture. As a joint result of β recrystallization behavior and pencil glide, The density of β phase texture increased at first and then decreased with the increase of deformation.

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向 彪,张 鹏,王周田.热变形对TiB-TC25G合金组织与织构影响[J].稀有金属材料与工程,2022,51(12):4586~4593.[Xiang Biao, Zhang Peng, Wang Zhoutian. Effect of thermal deformation on microstructure and texture evolution of TiB-TC25G alloy[J]. Rare Metal Materials and Engineering,2022,51(12):4586~4593.]
DOI:10.12442/j. issn.1002-185X.20220146

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历史
  • 收稿日期:2022-02-26
  • 最后修改日期:2022-05-23
  • 录用日期:2022-06-16
  • 在线发布日期: 2023-01-19
  • 出版日期: 2022-12-30