| TC4钛合金扩散连接区热变形特性行为研究 |
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| 引用本文： | 杨兴远,姜沐池,刘意,王继航,任德春,蔡雨升,吉海宾,雷家峰. TC4钛合金扩散连接区热变形特性行为研究[J]. 稀有金属材料与工程, 2023, 52(12): 4125-4132 |
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| 作者姓名： | 杨兴远 姜沐池 刘意 王继航 任德春 蔡雨升 吉海宾 雷家峰 |
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| 作者单位： | 中国科学院金属研究所轻质高强材料研究部,中国科学院金属研究所轻质高强材料研究部,中国科学院金属研究所轻质高强材料研究部,中国科学院金属研究所轻质高强材料研究部,中国科学院金属研究所轻质高强材料研究部,中国科学院金属研究所轻质高强材料研究部,中国科学院金属研究所轻质高强材料研究部,中国科学院金属研究所轻质高强材料研究部 |
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| 基金项目： | 工信部民机专项(MJZ 2-2N21-5) |
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| 摘 要： | 以TC4钛合金扩散连接区为研究对象,在变形温度920,950,980,1010 ℃及应变速率0.01,0.1,1,10 s-1的条件下进行热变形试验,研究了变形温度和应变速率对TC4钛合金扩散连接区流变应力和微观组织的影响规律。研究结果表明：TC4钛合金扩散连接区在高温下具有明显的动态软化特征,流变应力随变形温度的升高而降低,随变形速率的提高而增大;高温变形后扩散连接界面消失,随变形温度的增加,等轴α相的体积分数减少,同时伴有短棒状和板条状的次生α相出现,且次生α相的体积分数随应变速率增加逐渐降低;当变形温度达到1010 ℃时,出现马氏体α′相;以双曲正弦形式修正的Arrhenius方程为基础,建立了TC4钛合金扩散连接区双曲正弦本构方程以及热加工图,确定TC4钛合金扩散连接区的最佳变形温度为920~950 ℃,变形速率为0.01~0.1 s-1。
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| 关 键 词： | TC4钛合金 扩散连接 高温变形 本构方程 热加工图 |
| 收稿时间： | 2022-12-01 |
| 修稿时间： | 2023-05-08 |
Thermal deformation behavior of diffusion-bonded region of TC4 titanium alloy |
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| Yang xingyuan,Jiang Muchi,Liu Yi,Wang Jihang,Ren Dechun,Cai Yusheng,Ji Haibin and Lei Jiafeng. Thermal deformation behavior of diffusion-bonded region of TC4 titanium alloy[J]. Rare Metal Materials and Engineering, 2023, 52(12): 4125-4132 |
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| Authors: | Yang xingyuan Jiang Muchi Liu Yi Wang Jihang Ren Dechun Cai Yusheng Ji Haibin Lei Jiafeng |
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| Affiliation: | Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China,Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China,Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China,Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China,Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China,Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China,Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China,Research Department of Light and High Strength Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 11016,China |
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| Abstract: | |
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| Keywords: | TC4 titanium alloy Diffusion bonding Hot deformation behavior Constitutive equation Thermal processing diagram. |
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