| Nb-Ti微合金钢中的含氮量对焊接粗晶热影响区韧性的影响 |
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| 引用本文： | 史弼,曹涵清,邬君飞. Nb-Ti微合金钢中的含氮量对焊接粗晶热影响区韧性的影响[J]. 宝钢技术, 2001, 0(2): 28-31 |
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| 作者姓名： | 史弼 曹涵清 邬君飞 |
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| 作者单位： | 宝钢股份公司,技术中心,上海,201900 |
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| 摘 要： | 选择三个不同含氮量的抗拉强度为490MPa级的铌钛微合金钢，研究含氮量对焊接粗晶热影响区（Coarse Grain Heat Affected Zone,CGHAZ)韧性的影响，观察试验钢焊接热影响区的奥氏体晶粒尺寸的粗化倾向。结果表明：适当提高试验钢的含氮量可使焊接热影响区奥氏体晶粒粗化得到抑制，并使钢具有较高的焊热影响区韧性。
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| 关 键 词： | 微合金钢 氮 铌 钛 韧性 奥氏体晶粒 焊接热模拟 |
| 文章编号： | 1008-0716(2001)02-0028-04 |
| 修稿时间： | 2000-10-31 |
Influence of Nitrogen Content of Nb - Ti Microalloyed Steel on Welding CGHAZ Toughness |
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| SHI Bi CAO Han qing WU Jun fei. Influence of Nitrogen Content of Nb - Ti Microalloyed Steel on Welding CGHAZ Toughness[J]. Baosteel Technology, 2001, 0(2): 28-31 |
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| Authors: | SHI Bi CAO Han qing WU Jun fei |
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| Abstract: | Three kinds of Nb Ti microalloyed steel of different nitrogen content with a same tensile strength of 490MPa are selected to investigate the effect of nitrogen content in test steel on the toughness of welding coarse grain heat affected zone(CGHAZ).The result of the investigation on coarsening tendency of austenite grain in welding CGHAZ shows that steel with moderate nitrogen content processes higher welding CGHAZ toughness and can restrain the grain growth coarsening. |
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| Keywords: | Microalloyed steel Nitrogen Niobium Titanium Toughness Austenite grain Welding simulating |
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