| 基于m值钛合金超塑性变形过程的计算机控制系统 |
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| 引用本文： | 赵晓宾,王高潮,范定兵.基于m值钛合金超塑性变形过程的计算机控制系统[J].南昌航空工业学院学报,2007,21(1):30-34. |
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| 作者姓名： | 赵晓宾 王高潮 范定兵 |
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| 作者单位： | 南昌航空工业学院 江西南昌330063 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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航空基础科学基金 |
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| 摘 要： | 通过PC、实验控制软件、DSP、灵敏传感器等组成控制系统对钛合金超塑性拉伸变形过程进行优化控制,以便获得更好的超塑性。讨论了m值法计算机闭环控制系统的原理和实验方法。结果表明,利用m值法计算机闭环控制系统对变形进行监控,TC11钛合金能够获得更显著的超塑性,能有效地找到一种材料最佳变形模式。
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| 关 键 词： | 钛合金 超塑性 应变速率敏感指数 闭环控制系统 |
| 文章编号： | 1001-4926（2007）01-0030-05 |
| 修稿时间： | 2007-01-21 |
Computer control system of maximum m superplasticity deformation based on titanium alloy |
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| ZHAO Xiao-bin,WANG Gao-chao,FAN Ding-bing.Computer control system of maximum m superplasticity deformation based on titanium alloy[J].Journal of Nanchang Institute of Aeronautical Technology(Natural Science Edition),2007,21(1):30-34. |
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| Authors: | ZHAO Xiao-bin WANG Gao-chao FAN Ding-bing |
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| Institution: | Nanchang Institute of Aeronautical Technology, Nanchang, Jiangxi 330063, China |
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| Abstract: | In this paper,the emphasis is placed on the principles and experiment method of its computer control.In superplastic deformation(SPD) process,strain-rate sensitivity exponent(m) is a critical parameter,which represents,articulates and quantifies the superplasticity level.The higher the m value,the better the superplasticity of the materials.When the titanium alloy is in plastic deformation,we probe the force and speed through sensor and calculate the value of m.Then according to the situation of value of m fluctuating,we will send the best speed to machine.The experiment results show that by maximum m superplasticity deformation(MaxmSPD),the titanium alloys produce marked superplastic behaviour in comparison with those general superplastic test methods.The new method can investigate the optimal superplastic deformation pattern. |
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| Keywords: | titanium alloy superplastic deformation strain-rate sensitivity exponent(m) maximum m superplasticity deformation computer feedback control system |
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