| Deformation Behavior of Hot Isostatic Pressing FGH96 Superalloy |
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| 作者姓名： | 刘玉红 李付国 喻宏波 |
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| 作者单位： | School of Mechanical Engineering Tianjin University Tianjin 300072 China，School of Materials Science and Engineering Northwestern Polytechnjcal University Xi'an 710072 China，School of Mechanical Engineering Tianjin University Tianjin 300072 China |
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| 基金项目： | Supported by Young Teacher Foundation of Tianjin University (5110105) and Aeronautic Science Foundation (03H53048). |
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| 摘 要： | The deformation behavior of hot isostatic pressing (HIP) FGH96 superalloy was characterized in the temperature range of 1 000-1 100℃and strain rate range of 0.001-0.1s-1 using hot compression testing. The flow curves of HIP FGH96 superalloy during hot deformation was analyzed systematically. The results show that deformation temperature, strain rate and strain are the main influence factors on flow stress of HIP FGH96 superalloy during hot deformation. The flow stress displays a peak at a critical strain and then decreases with further increase in strain. For a given strain, the flow stress decreases with the increase of deformation temperature, and increases with the increase of strain rate. A mathematical model of these flow curves was established through regression analysis and taking the strain as a modification factor. The calculated stress values agree well with the experimental values.
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| 关 键 词： | 耐热合金 粉末冶金 热等静压 压缩试验 数学模型 回归分析 |
| 收稿时间： | 2006-03-22 |
Deformation Behavior of Hot Isostatic Pressing FGH96 Superalloy |
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| LIU Yuhong,LI Fuguo,YU Hongbo.Deformation Behavior of Hot Isostatic Pressing FGH96 Superalloy[J].Transactions of Tianjin University,2006,12(4):281-285. |
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| Authors: | LIU Yuhong LI Fuguo YU Hongbo |
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| Abstract: | The deformation behavior of hot isostatic pressing (HIP) FGH96 superalloy was characterized in the temperature range of 1 000-1 100 ℃ and strain rate range of 0. 001-0.1 s-1 using hot compression testing. The flow curves of HIP FGH96 superalloy during hot deformation was analyzed systematically. The results show that deformation temperature, strain rate and strain are the main influence factors on flow stress of HIP FGH96 superalloy during hot deformation. The flow stress displays a peak at a critical strain and then decreases with further increase in strain. For a given strain, the flow stress decreases with the increase of deformation temperature, and increases with the increase of strain rate. A mathematical model of these flow curves was established through regression analysis and taking the strain as a modification factor. The calculated stress values agree well with the experimental values. |
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| Keywords: | powder metallurgical superalloy hot isostatic pressing compression testing mathematical model regression analysis |
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