| Zr-4合金热变形行为及物理本构模型 |
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| 引用本文： | 冯瑞,王克鲁,鲁世强,李鑫,周璇,钟明君. Zr-4合金热变形行为及物理本构模型[J]. 稀有金属材料与工程, 2021, 50(2): 525-530 |
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| 作者姓名： | 冯瑞 王克鲁 鲁世强 李鑫 周璇 钟明君 |
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| 作者单位： | 南昌航空大学航空制造工程学院,南昌航空大学航空制造工程学院,南昌航空大学航空制造工程学院,南昌航空大学航空制造工程学院,南昌航空大学航空制造工程学院,南昌航空大学航空制造工程学院 |
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| 基金项目： | 国家自然科学基金资助(51164030) |
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| 摘 要： | 利用Gleeble-3500型热模拟试验机对Zr-4合金试样进行等温恒应变速率压缩实验,对其热变形行为进行分析,综合考虑变形温度对Young's模量和自扩散系数的影响,建立了 Zr-4合金基于应变耦合的物理本构模型.研究结果表明:合金的峰值应力对变形温度和应变速率敏感,峰值应力会随应变速率的增加或变形温度的降低而增大;...
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| 关 键 词： | Zr-4合金 热变形行为 应变耦合 物理本构模型 |
| 收稿时间： | 2020-02-24 |
| 修稿时间： | 2020-04-02 |
Hot deformation behavior and strain compensation physical constitutive model of Zr-4 alloy |
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| FENG Rui,WANG Kelu,LU Shiqiang,LI Xin,ZHOU Xuan and ZHONG Mingjun. Hot deformation behavior and strain compensation physical constitutive model of Zr-4 alloy[J]. Rare Metal Materials and Engineering, 2021, 50(2): 525-530 |
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| Authors: | FENG Rui WANG Kelu LU Shiqiang LI Xin ZHOU Xuan ZHONG Mingjun |
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| Affiliation: | School of Aerospace Manufacturing Engineering,Nanchang Hangkong University,School of Aerospace Manufacturing Engineering,Nanchang Hangkong University,School of Aerospace Manufacturing Engineering,Nanchang Hangkong University,School of Aerospace Manufacturing Engineering,Nanchang Hangkong University,School of Aerospace Manufacturing Engineering,Nanchang Hangkong University,School of Aerospace Manufacturing Engineering,Nanchang Hangkong University |
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| Abstract: | The isothermal constant strain rate compression experiment was carried out on Zr-4 alloy samples by using a Gleeble-3500 thermal simulator. The thermal deformation behavior was analyzed, and the physical constitutive model based on strain compensation Zr-4 alloy was established by combining the influence of deformation temperature on Young"s modulus and self-diffusion coefficient. The results show that the peak stress of the alloy is sensitive to the deformation temperature and strain rate, and the peak stress will increase with the increase of the strain rate or the decrease of the deformation temperature. The constructed physical constitutive model can better predict the flow stress of the alloy in the thermal deformation process, and its correlation coefficient R is 0.986. The data points with the predicted value deviation less than 10% account for 93.2%, and the average relative error is 6.3%. |
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| Keywords: | Zr-4 alloy hot deformation strain compensation physical constitutive model |
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