| 不锈钢焊缝热塑性及组织形态试验研究 |
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| 引用本文： | 刘建华 王青峰. 不锈钢焊缝热塑性及组织形态试验研究[J]. 钢铁研究, 1997, 0(4): 25-30 |
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| 作者姓名： | 刘建华 王青峰 |
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| 作者单位： | [1]华中理工大学 [2]武钢钢研所 |
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| 摘 要： | 试验在Ｇｌｅｅｂｌｅ－１５００模拟试验机上以加氮和不加氮１８－８型不锈钢焊缝金属为对象,进行了热性及其相应高温组织形态的研究。研究表明用热模拟技术对凝固组织重新加热到高温时,以激冷方式“固定”高温组织基本形态,以便室温下加以分析的方法是可行的。用该方法观察到１８－８型焊缝由于氮的加入,使焊缝金属凝固方式从先铁纱体模型转变成先奥氏体模型,从组织结构上说明了加氮后焊缝热塑性下降的内在原因。
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| 关 键 词： | 不锈钢 焊缝金属 热塑性 热模拟 焊接 |
RESEARCH ON HOT-DUCTILITY AND MICROSTRUCTURE MORPHOLOGY OF STAINLESS STEEL WILD METAL |
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| Liu Jianhua Li Zhiyuan Xie Min Li. RESEARCH ON HOT-DUCTILITY AND MICROSTRUCTURE MORPHOLOGY OF STAINLESS STEEL WILD METAL[J]. Research on Iron and Steel, 1997, 0(4): 25-30 |
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| Authors: | Liu Jianhua Li Zhiyuan Xie Min Li |
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| Affiliation: | Liu Jianhua Li Zhiyuan Xie Min Li (Huazhong University of Science & Technology) Wang Qingfeng Chen Xu Wang Yutoo (Iron & Steel Research Institute WISCO) |
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| Abstract: | The study investigates the hot ductility and the high temperature microstructure morphology of 18-8 stainless steel weld metal with and without N addition on the Gleeble-1500 simulator. Using the thermal simulation technique,the weld metal can be heated to high temperature,then qucnched to "freeze" the high temperature microstructure morphology. It shows that with N addition the welding solidification will be transformed from primary-ferrite mode to primary-austenite mode,which indicates inherent cause for decreasing hot-ductility of the weld metal with N added. |
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| Keywords: | stainless steel weld metal thermal simulation hot ductility |
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