| 稀土元素Ce对Al－Mg－Si合金断裂韧性的改善及其细观机理分析 |
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| 引用本文： | 文健,周承恩,郭锋,侯晓宁.稀土元素Ce对Al－Mg－Si合金断裂韧性的改善及其细观机理分析[J].内蒙古工业大学学报,1996(4). |
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| 作者姓名： | 文健 周承恩 郭锋 侯晓宁 |
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| 作者单位： | 内蒙古工业大学基础部 |
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| 摘 要： | 用三点弯曲（ＴＰＢ）裂纹试件测定平面应变条件下的断裂韧性Ｊ１ｃ与ＪＲ，试验结果表明，稀土Ｃｅ较大地提高了Ａｌ－Ｍｇ－Ｓｉ合金的起裂韧度值Ｊ１ｃ，特别是，显著地改善了合金的裂纹扩展抗力ＪＲ。金相显微观察和电镜分析表明，稀土Ｃｅ改善了材料的初始细观结构（材料在加载前的组织结构），改变了材料的细观损伤特点，发展了材料的含损伤塑性。
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| 关 键 词： | 稀土 断裂韧性 细观分析 |
THE IMPROVEMENT OF RARE EARTH ELEMENT Ce ON THE FRACTURE TOUGHNESS OF Al-Mg-Si WROUGHTALUMINUM ALLOY AND THE MESO-MECHANISMANALYSIS OF THE PHENOMENON |
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| Wen Jian, Zhou Chengen, Guo Feng ,Hou Xiaoning.THE IMPROVEMENT OF RARE EARTH ELEMENT Ce ON THE FRACTURE TOUGHNESS OF Al-Mg-Si WROUGHTALUMINUM ALLOY AND THE MESO-MECHANISMANALYSIS OF THE PHENOMENON[J].Journal of Inner Mongolia Polytechnic University(Social Sciences Edition),1996(4). |
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| Authors: | Wen Jian Zhou Chengen Guo Feng Hou Xiaoning |
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| Abstract: | From a three-point bending test plane strain fracture toughness J1c and JR are obtained.The result of the test shows that Al-Mg-Si alloy's fracture toughness J1c can be raised a lotby adding rare earth element Ce to it. Further,crack resistance force JR can be improved obviously. Meso-scopic observation shows that the addition of Ce to tile alloy can improve the mesostructure, change the meso-damage characteristic and develope the damage-containingplasticity of the alloy. |
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| Keywords: | rare earth fracture toughness meso-scopic analysis |
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