| 硼含量及横向取样对定向凝固Ni_3Al合金持久性能的影响 |
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| 引用本文： | 陶春虎,赵希宏,王守凯,颜鸣皋.硼含量及横向取样对定向凝固Ni_3Al合金持久性能的影响[J].航空学报,1995,16(5):623-627. |
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| 作者姓名： | 陶春虎 赵希宏 王守凯 颜鸣皋 |
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| 作者单位： | 北京航空材料研究所4室,北京,100095 |
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| 摘 要： | 硼的添加增强了晶界的结合力 ,使合金相界面的位错组态改变 ,提高了持久断裂寿命 ;硼的添加细化晶粒 ,增加界面数 ,使持久寿命下降。Ni3Al定向凝固横向试样持久性能不稳定与取样位置有关
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| 关 键 词： | 硼 含量 取样 持久强度 效应 |
| 收稿时间： | 1994-01-18 |
| 修稿时间： | 1994-05-06 |
EFFECTS OF BORON CONTENT AND TRANSVERSE SAMPLING ON STRESS-RUPTUER PROPERTY AT HIGH TEMPERATURE OF DS Ni_3Al ALLOY |
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| Tao Chunhu,Zhao Xihong,Wang Shoukai,Yan Minggao.EFFECTS OF BORON CONTENT AND TRANSVERSE SAMPLING ON STRESS-RUPTUER PROPERTY AT HIGH TEMPERATURE OF DS Ni_3Al ALLOY[J].Acta Aeronautica et Astronautica Sinica,1995,16(5):623-627. |
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| Authors: | Tao Chunhu Zhao Xihong Wang Shoukai Yan Minggao |
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| Institution: | Facult 4, Institute of Aeronautical Materials, Beijing,100095 |
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| Abstract: | The effects of boron content and transverse specimens on the stress rupture property at high temperatures of directionally solidified(DS)Ni 3Al alloy have been investigated. The addition of boron induces grain boundary strengthening and the change of dislocation configuration, which improves the stress rupture life at high temperatures of DS Ni 3Al. On the other hand,the addition of boron fines the structure and increases the number of grain boundaries. The instability of the stress rupture property at high temperatures of DS NI 3Al transverse specimens is dependent on the sampling position. |
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| Keywords: | boron content sampling stress rupture strength effects |
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