| 高Nb--TiAl合金叶片锻造模拟 |
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| 引用本文： | 辛景景,张来启,马向玲,林均品.高Nb--TiAl合金叶片锻造模拟[J].北京科技大学学报,2016(4):532-537. |
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| 作者姓名： | 辛景景 张来启 马向玲 林均品 |
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| 作者单位： | 北京科技大学新金属材料国家重点实验室,北京,100083 |
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| 基金项目： | 北京市自然科学基金资助项目(2162024);国家重点基础研究发展计划资助项目(2011CB605502) |
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| 摘 要： | 采用Deform-3D有限元软件模拟β-γ高Nb-TiAl合金叶片等温锻造，分析等效应变场、等效应力场与温度场的分布.叶片等温锻造中叶身与榫头的等效应变分布均匀，随着上模具压下速度的增大和预热温度的升高，变形过程中等效应力降低，有利于动态再结晶的发生；上模具压下速度在1.0~1.5 mm·s-1、预热温度在1250~1300℃有利于提高β-γ高Nb-TiAl合金叶片锻件的质量.
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| 关 键 词： | 钛铝合金 铌 叶片 等温锻造 计算机模拟 |
Forging simulation of blades of a high niobium containing TiAl based alloy |
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| XIN Jing-jing,ZHANG Lai-qi,MA Xiang-ling,LIN Jun-pin.Forging simulation of blades of a high niobium containing TiAl based alloy[J].Journal of University of Science and Technology Beijing,2016(4):532-537. |
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| Authors: | XIN Jing-jing ZHANG Lai-qi MA Xiang-ling LIN Jun-pin |
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| Institution: | XIN Jing-jing;ZHANG Lai-qi;MA Xiang-ling;LIN Jun-pin;State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing; |
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| Abstract: | The isothermal forging process of blades of a β-γ high niobium containing TiAl based alloy was simulated by using a Deform-3D software, with focus on the analysis of the effective strain, effective stress and temperature distributions. The results dem-onstrate that the effective strains of the blade body and rabbet uniformly distribute during the isothermal forging process. With the in-crease of top die speed and preheating temperature, the effective stress decreases and the dynamic recrystallization is easy to take place . The preheating temperature of 1250-1300℃ and the top die speed of 1. 0-1. 5 mm·s-1 help to improve the quality of the forged blades. |
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| Keywords: | titanium aluminum alloys niobium blades isothermal forging computer simulation |
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