| 焊接热循环对微钙钢组织性能的影响 |
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| 引用本文： | 贾坤宁,高彩茹,杜林秀,王国栋,刘相华. 焊接热循环对微钙钢组织性能的影响[J]. 钢铁研究, 2007, 35(2): 17-21 |
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| 作者姓名： | 贾坤宁 高彩茹 杜林秀 王国栋 刘相华 |
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| 作者单位： | 东北大学,轧制技术及连轧自动化国家重点实验室,辽宁,沈阳,110004;东北大学,轧制技术及连轧自动化国家重点实验室,辽宁,沈阳,110004;东北大学,轧制技术及连轧自动化国家重点实验室,辽宁,沈阳,110004;东北大学,轧制技术及连轧自动化国家重点实验室,辽宁,沈阳,110004;东北大学,轧制技术及连轧自动化国家重点实验室,辽宁,沈阳,110004 |
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| 摘 要： | 研究了焊接热模拟工艺参数(峰值温度Tp、焊后冷却时间t8/5)和真实焊接对微钙钢热影响区显微组织和性能的影响.用Lepera着色腐蚀剂腐蚀粒状贝氏体中的M-A组元,观察和研究了不同t8/5的热模拟条件下粒状贝氏体中M-A组元的形态、数量及分布特征.结果表明:当冷却速度较快时,M-A组元主要以杆状呈方向性分布;当冷却速度降低时,M-A组元逐渐变成颗粒状,并失去方向性;真实焊接试验结果与热模拟试验结果相符.
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| 关 键 词： | 热模拟 粒状贝氏体 M-A组元 |
| 文章编号： | 1001-1447（2007）02-0017-05 |
| 修稿时间： | 2006-06-16 |
Effect of simulated welding thermal cycle on microstructure and properties of HAZ for micro-calcium steel |
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| JIA Kun-ning,GAO Cai-ru,DU Lin-xiu,WANG Guo-dong,LIU Xiang-hua. Effect of simulated welding thermal cycle on microstructure and properties of HAZ for micro-calcium steel[J]. Research on Iron and Steel, 2007, 35(2): 17-21 |
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| Authors: | JIA Kun-ning GAO Cai-ru DU Lin-xiu WANG Guo-dong LIU Xiang-hua |
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| Affiliation: | The State Key Laboratory of Roiling and Automation, Northeastern University , Shenyang 110004, China |
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| Abstract: | The effects of technological parameters of simulated welding thermal cycle(peak temperature Tp and cooling time t8/5) on microstructure and properties of HAZ in micro-calcium steel were studied.The granularity and M-A constituents were etched by Lepera reagent.The pattern,quantity and distribution of M-A constituents with different t8/5 were observed and studied.The research shows that when the cooling rate is lower the M-A constituents are major and directional,when the cooling rate is higher the M-A constituents are granular and non-directional. |
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| Keywords: | simulated welding thermal cycle granular M-A constituents |
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