| 16MnR焊接接头动态冲击断裂韧性试验研究 |
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| 引用本文： | 于琴,霍宏发,巩水利. 16MnR焊接接头动态冲击断裂韧性试验研究[J]. 西南交通大学学报, 2003, 38(5): 509-512 |
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| 作者姓名： | 于琴 霍宏发 巩水利 |
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| 作者单位： | 1. 西北核技术研究所,陕西,西安,710024
2. 北京航天工艺研究所,北京,100024 |
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| 摘 要： | 采用动态冲击试验，研究16MnR焊接接头在高速冲击加载条件下的断裂韧性，并分析了其影响因素以及断口形貌．试验结果表明：随冲击速度增大，焊接接头的冲击韧性明显下降；在动态冲击载荷作用下，试样的断裂以脆性断裂为主，焊接接头整体趋向于硬脆．对承受动态冲击载荷的焊接接头进行安全设计时，应特别重视焊接接头的冲击韧性．
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| 关 键 词： | 焊接接头 冲击韧性 动态冲击 16MnR |
| 文章编号： | 0258-2724(2003)05-0509-04 |
Dynamic Impact and Fracture Toughness of 16MnR Welded Joints |
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| YU Qin ,HUO Hong-fa ,GONG Shui-li. Dynamic Impact and Fracture Toughness of 16MnR Welded Joints[J]. Journal of Southwest Jiaotong University, 2003, 38(5): 509-512 |
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| Authors: | YU Qin HUO Hong-fa GONG Shui-li |
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| Affiliation: | YU Qin 1,HUO Hong-fa 1,GONG Shui-li 2 |
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| Abstract: | The dynamic impact energies of 16MnR welded joints were determined with high speed impact test, and the influencing factors and fracture morphology were studied. The impact toughness of 16MnR welded joints decreases greatly and the joints become brittle in general with an increase in impact speed. The results suggest that more attention should be paid to the dynamic impact toughness of a welded joint when it is subjected to high speed impact loads. |
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| Keywords: | welded joints impact toughness dynamic impact 16MnR |
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