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材料工程  2016, Vol. 44 Issue (8): 104-110    DOI: 10.11868/j.issn.1001-4381.2016.08.017
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316L-Q345R不锈钢复合板性能评价
金贺荣1,2, 杨旭坤3, 宜亚丽3
1. 燕山大学 先进锻压成型技术与科学教育部重点实验室, 河北 秦皇岛 066004;
2. 燕山大学 河北省并联机器人与机电系统实验室, 河北 秦皇岛 066004;
3. 燕山大学 机械工程学院, 河北 秦皇岛 066004
Performance Evaluation of 316L-Q345R Stainless Steel Clad Plate
JIN He-rong1,2, YANG Xu-kun3, YI Ya-li3
1. Key Laboratory of Advanced Forging & Stamping Technology and Science of Ministry of National Education, Yanshan University, Qinhuangdao 066004, Hebei, China;
2. Parallel Robot and Mechatronic System Laboratory of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China;
3. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China
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摘要 从微观组织和显微硬度两方面对真空热轧316L-Q345R不锈钢复合板试样性能进行评价。采用电子显微和能谱分析技术,对试样进行微观组织特征观察和成分含量测定,研究相结构及成分变化规律。通过硬度测试仪对复合板界面附近硬度进行测量,研究微观组织与硬度关系。结果表明:热轧后复合板Q345R侧显微组织以铁素体和珠光体为主,316L侧显微组织为单一奥氏体,一部分晶粒呈孪晶状态,Q345R低合金钢和316L不锈钢经过热轧可良好复合,复合界面平直;界面两侧元素存在扩散现象,不锈钢中Cr,Ni元素向低合金钢侧扩散,在界面形成富Cr,Ni薄层,低合金钢中C向不锈钢侧产生少量迁移;在复合界面处的硬度值较大,低合金钢侧远离界面位置复合板硬度与Q345R本身硬度值接近,而从界面到不锈钢侧硬度呈现先下降后上升至稳定的趋势。
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金贺荣
杨旭坤
宜亚丽
关键词 不锈钢复合板金相组织元素扩散硬度    
Abstract:Performance of 316L-Q345R stainless steel clad plate prepared by vacuum hot-rolling was evaluated from two aspects of the microstructure and micro-hardness. Microstructure topography and constituent of clad plate were investigated by scanning electron microscope and energy spectrum analysis, and changing rules of phase structure and constituent were also studied. Relationship between microstructure and hardness was studied by testing the hardness of interface between stainless steel and carbon steel through hardness tester. The results indicate that, after vacuum hot-rolling, the microstructure of Q345R is mainly composed of ferrite and pearlite. The microstructure of 316L is single austenite, and part of grain is twin state. The clad plate compounds well after vacuum hot rolling, and the interface between stainless steel and carbon steel is straight. Elements diffuse into both sides of the interface. Cr and Ni diffuse from stainless steel into the low alloy steel and form a rich Cr/Ni layer in the interface, and C migrates from the low alloy steel into stainless steel. The hardness of clad plate is larger at the composite interface. The hardness away from the interface is closed to that of Q345R steel in Q345R steel side, while from the interface to stainless steel, the hardness reduces and then increases until it reaches a stable value.
Key wordsstainless steel clad plate    microstructure    elements diffusion    hardness
收稿日期: 2014-09-11      出版日期: 2016-08-23
中图分类号:  TB331  
  TG335.8  
通讯作者: 金贺荣(1975-),男,副教授,博士,从事复合型材成形理论与工艺技术研究,联系地址:河北省秦皇岛市燕山大学机械工程学院(066004),ysujhr@ysu.edu.cn     E-mail: ysujhr@ysu.edu.cn
引用本文:   
金贺荣, 杨旭坤, 宜亚丽. 316L-Q345R不锈钢复合板性能评价[J]. 材料工程, 2016, 44(8): 104-110.
JIN He-rong, YANG Xu-kun, YI Ya-li. Performance Evaluation of 316L-Q345R Stainless Steel Clad Plate. Journal of Materials Engineering, 2016, 44(8): 104-110.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.08.017      或      http://jme.biam.ac.cn/CN/Y2016/V44/I8/104
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