| C276合金的热变形行为(英文) |
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| 引用本文： | 陆燕玲,刘锦溪,李肖科,梁建平,李志军,吴冠原,周兴泰.C276合金的热变形行为(英文)[J].中国有色金属学会会刊,2012(Z1):84-88. |
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| 作者姓名： | 陆燕玲 刘锦溪 李肖科 梁建平 李志军 吴冠原 周兴泰 |
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| 作者单位： | 中国科学院上海应用物理研究所;重庆交通大学机电与汽车工程学院 |
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| 基金项目： | Project (XDA02000000) supported by the Strategic Priority Research Program of the CAS;Projects (2010CB934501, 2010CB934503) supported by the National Basic Research Program of China;Project (11JC1414900) supported by Science and Technology Commission of Shanghai Municipality, China;Projects (11005148, 50904044) supported by the National Natural Science Foundation of China |
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| 摘 要： | 采用万能材料试验机,研究C276高温合金在变形温度650～750°C、变形速度0.35～35mm/s条件下的高温拉伸变形行为,分析了变形温度、变形速率对 C276 合金变形行为的作用及影响规律。结果表明:变形温度和变形速率对合金流变应力有显著影响,流变应力随着变形温度的升高而降低,随着变形速率的提高而增大。在温度为700°C、应变速率为0.35mm/s和3.5mm/s时,曲线呈现出明显的稳态流变应力特征,合金变形机制以动态回复为主;在温度为 750 °C时,随着应变量的增加,合金内发生动态再结晶。利用Zener-Hollomon参数建立了C276合金的变形抗力模型, 求得变形激活能为327.66kJ/mol。
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| 关 键 词： | C276合金 高温拉伸变形 流变应力 本构方程 |
Hot deformation behavior of Hastelly C276 superalloy |
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| LU Yan-ling,LIU Jin-xi,LI Xiao-ke,LIANG Jian-ping,LI Zhi-jun,WU Guan-yuan,ZHOU Xing-tai.Hot deformation behavior of Hastelly C276 superalloy[J].Transactions of Nonferrous Metals Society of China,2012(Z1):84-88. |
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| Authors: | LU Yan-ling LIU Jin-xi LI Xiao-ke LIANG Jian-ping LI Zhi-jun WU Guan-yuan ZHOU Xing-tai |
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| Affiliation: | 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; 2. College of Mechatronics and Automobile Engineering, Chongqing Jiaotong University, Chongqing 400074, China |
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| Abstract: | Hot tensile behavior of C276 superalloy was studied in the deformation temperature range of 650-750 °C with the strain rate range of 0.35-35 mm/s. The results show that deformation temperature and strain rate both have significant influence on the flow stress. The flow stress decreases with the increase of deformation temperature, while increases with the increase of strain rate. The deformation of C276 superalloy exhibits dynamic recovery feature in the case of deformation temperature of 700 °C. However, when the deformation temperature increases to 750 °C, dynamic recrystallization behavior may occur. The flow stress of C276 alloy during hot deformation process can be characterized by Zener-Hollomon parameter including the Arrhenius term and the deformation activation energy is 327.66 kJ/mol. Therefore, a scientific basis is provided for the reasonable choice of processing parameters of C276 superalloy. |
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| Keywords: | C276 superalloy hot tension deformation flow stress constitutive equation |
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