| 微量预应变对焊接接头疲劳性能的影响 |
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| 引用本文： | 陈怀宁,陈亮山. 微量预应变对焊接接头疲劳性能的影响[J]. 焊接学报, 1992, 13(3): 193-197 |
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| 作者姓名： | 陈怀宁 陈亮山 |
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| 作者单位： | 沈阳中国科学院金属研究所，沈阳中国科学院金属研究所 |
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| 摘 要： |
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| 关 键 词： | 辊压预应变 焊接接头 疲劳 |
| 收稿时间： | 1992-04-10 |
Effect of micro-prestrain on fatigue property of welded joint |
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| Chen Huaining and Chen Liangshan. Effect of micro-prestrain on fatigue property of welded joint[J]. Transactions of The China Welding Institution, 1992, 13(3): 193-197 |
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| Authors: | Chen Huaining and Chen Liangshan |
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| Affiliation: | Institute of Metal Research, Academia Sinica, Shenyang and Institute of Metal Research, Academia Sinica, Shenyang |
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| Abstract: | The fatigue and mechanical properties of 16Mr steel welded joint by rolled prestrain have been determined with the rotating bending specimens. The fractograph and dislocation morphology were observed by means of SEM and TEM. The experimental results indicate that the fatigue limit of the material by rolled prestrain was apparently reduced although its strength and hardness were increased. The fatigue fractograph of the material with microprestain showed entire embrittle feature; and the dislocations were mostly multiplicated and displayed cell substructure. It is considered that special structure of the dislocation and damage accumulation induced by rolled were main factors to make the fatigue strength of the welded joint reduced after rolled prestrain. |
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| Keywords: | rolled prestrain welded joint fatigue |
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