| 引用本文: | 宋先邨,雷勇军.1420cs铝锂合金型材力学特性测试.[J].国防科技大学学报,2002,24(2):14-16.[点击复制] |
| SONG Xiancun,LEI Yongjun.Experimental Study on Mechanical Properties of 1420cs Al-Li Alloy Moulding Material[J].Journal of National University of Defense Technology,2002,24(2):14-16[点击复制] |
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| 1420cs铝锂合金型材力学特性测试 |
| 宋先邨, 雷勇军 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 用电测的方法，得到了材料的应力与纵向应变曲线及横向应变与纵向应变曲线，判读出σ0.2 、σb、E、μ，测试结果表明：过比例伸长应力后，横向变形有明显跳动，这种特性有别于其他材料，使用中应予注意；测试了表面裂纹的断裂韧度。 |
| 关键词: 纵向变形 横向变形 表面裂纹 断裂韧度 |
| DOI： |
| 投稿日期：2001-04-01 |
| 基金项目: |
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| Experimental Study on Mechanical Properties of 1420cs Al-Li Alloy Moulding Material |
| SONG Xiancun, LEI Yongjun |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073,China)
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| Abstract: |
| The stress-ongitudinal strain curves are tested using electrical measuring technique. The relations of transverse strain and longitudinal strain are also examined. Some properties such as σ0.2，σb,E and μ are derived. Testing results indicate that transverse strain has distinct jumpiness when stress exceeds proportional elongation point. The properties of the material are different from others.The fracture toughness of surface crack is also tested. |
| Keywords: longitudinal deformation transverse deformation surface crack fracture toughness |
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