| Ti-B多层焊缝及其热模拟试样冲击韧性的研究 |
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| 引用本文： | 陈剑虹,夏天东.Ti-B多层焊缝及其热模拟试样冲击韧性的研究[J].兰州理工大学学报,1990(3). |
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| 作者姓名： | 陈剑虹 夏天东 |
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| 作者单位： | 甘肃工业大学焊接研究所
(陈剑虹)，甘肃工业大学焊接研究所(夏天东) |
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| 摘 要： | 本文采用热模拟试验机模拟了低碳低合金多层焊缝中的再热组织,证明多层焊缝低温冲击断裂的最薄弱环节就是热模拟焊缝再热区中韧性最低的区域,多层焊缝的韧性取决于焊缝再热区中韧性最低区域的韧性大小。线能量、合金元素之所以改变焊缝韧性是由于它们改变了焊缝再热区中韧性最低区域的韧性。
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| 关 键 词： | 焊缝 热模拟 冲击韧性 铁素体 合金元素 |
Investigation of Ti-B Multi-layer Weld and Impact Toughness of It's Thermally Simulated Specimen |
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| Chen Jianhong,Xia Tiandong.Investigation of Ti-B Multi-layer Weld and Impact Toughness of It''''s Thermally Simulated Specimen[J].Journal of Lanzhou University of Technology,1990(3). |
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| Authors: | Chen Jianhong Xia Tiandong |
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| Institution: | Welding Research Institute |
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| Abstract: | The re-heated microstructures in the low carbon, low alloy multi-layer welds have been successfully simulated by using the weld thermal-restraint stress and strain cycle simulator. It has been proved that the weakest linksin impact fracturing of the welds at low temperature are the regions having the lowest toughness in the re-heated welds.The toughnesses of the welds depend on the toughness values of the lowest toughness regions in the re-heated welds. The reason that the heat-input and alloy elements decide the toughnesses of the welds is that they change the toughnesses of the regions having the lowest toughness in the multi-layer welds. |
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| Keywords: | weld thermal simulation impact toughness ferrite alloy elements |
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