| 上引连铸TU1热变形行为研究 |
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| 引用本文： | 李鹏飞,邓持清,林新博,齐亮,姚幼甫,徐高磊. 上引连铸TU1热变形行为研究[J]. 有色金属科学与工程, 2019, 10(3): 69-74. DOI: 10.13264/j.cnki.ysjskx.2019.03.012 |
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| 作者姓名： | 李鹏飞 邓持清 林新博 齐亮 姚幼甫 徐高磊 |
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| 作者单位： | 江西理工大学材料科学与工程学院,江西 赣州,341000;绍兴力博集团,浙江 绍兴,312000 |
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| 基金项目： | 江西省教育厅科技项目GJJ180439 |
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| 摘 要： | 以上引连铸TU1杆料为研究对象,在MMS-100热模拟试验机上对其进行单道次压缩试验,研究了在不同应变速率(0.01~10s^-1)和不同变形温度(750~950℃)条件下的热变形行为,构建其本构模型.结果表明:在10s^-1高应变速率条件下,TU1在750℃变形时峰值应力高达80MPa,当温度升高到950℃时,峰值应力降至38MPa;而在应变速率为0.01s^-1、750℃变形时,峰值应力仅为30MPa,此时TU1已经发生动态再结晶;通过本构方程计算得到TU1的热变形激活能约为253kJ/mol.
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| 关 键 词： | TU1 热变形 本构方程 |
| 收稿时间： | 2018-12-25 |
Research on the hot deformation of upward continuous casting TU1 |
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| LI Pengfei,DENG Chiqing,LIN Xinbo,QI Liang,YAO Youfu,XU Gaolei. Research on the hot deformation of upward continuous casting TU1[J]. Nonferrous Metals Science and Engineering, 2019, 10(3): 69-74. DOI: 10.13264/j.cnki.ysjskx.2019.03.012 |
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| Authors: | LI Pengfei DENG Chiqing LIN Xinbo QI Liang YAO Youfu XU Gaolei |
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| Affiliation: | 1.School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China2.Shaoxing Libo Group, Shaoxing 312000, China |
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| Abstract: | The MMS-100 thermal simulation tester was utilized to perform a single pass compression test on the TU1 at different strain rates (0.01~10 s-1) and different deformation temperatures (750~950 ℃). And its thermal deformation was studied to construct the constitutive equation. The experimental results show that the peak stress is 80 MPa at 750 ℃, 10 s-1. When the deformation temperature increases to 950 ℃, the peak stress decreases to 38 MPa. But the peak stress is only 30 MPa at 750 ℃, 0.01 s-1, and TU1 has undergone dynamic recrystallization. According to the constitutive equation, the thermal deformation activation of TU1 is about 253 kJ/mol. |
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| Keywords: | TU1 thermal deformation constitutive equation |
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