| 高温合金IN690管材挤压损伤模拟 |
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| 引用本文： | 符和锋,王忠堂,陈永志.高温合金IN690管材挤压损伤模拟[J].沈阳理工大学学报,2014(3):49-54. |
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| 作者姓名： | 符和锋 王忠堂 陈永志 |
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| 作者单位： | 沈阳理工大学材料科学与工程学院,辽宁沈阳110159 |
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| 基金项目： | 国家自然科学基金资助（50834008） |
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| 摘 要： | 采用有限元软件对高温合金IN690管材挤压损伤进行预测,研究挤压速度对损伤的影响规律,得到不同的挤压条件下的挤压阈值。不同挤压速度下损伤的变化随着挤压速度变化呈现先增大后减小的趋势。模拟摩擦系数为0.01、0.05、0.1、0.2条件下的损伤,在摩擦系数为0.01时,坯料表面比较光滑,损伤比较轻;摩擦系数为0.2时,表面凹凸不平,损伤严重。
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| 关 键 词： | IN690 高温合金 损伤 管材挤压 |
Prediction of Crack Damage during Tube Extrusion of Superalloy IN690 |
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| FU Hefeng,WANG Zhongtang,CHEN Yongzhi.Prediction of Crack Damage during Tube Extrusion of Superalloy IN690[J].Transactions of Shenyang Ligong University,2014(3):49-54. |
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| Authors: | FU Hefeng WANG Zhongtang CHEN Yongzhi |
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| Affiliation: | ( Shenyang Ligong University, Shenyang 110159, China) |
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| Abstract: | During tube extrusion of IN690 Superalloy,damage was predicted using a finite element software. Threshold values under different extrusion condition were obtained by research on the effects of the extrusion speed on damage of tube extrusion. The value of threshold firstly increased and then decreased with increase of the extrusion speed. Simulated results under the conditions of the friction coefficient of 0. 01,0. 05,0. 1,0. 2,respectively indicated that the billet surface was smooth and had small damage under the condition of friction coefficient of 0. 01,while the surface became uneven and had serious damage under the condition of friction coefficient of 0. 2. |
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| Keywords: | IN690 superalloy damage tube extrusion |
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