E36高强船板钢的激光焊接及微观组织研究

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英文篇名：Research on Laser Welding Process and Joint Microstructure of E36 High-strength Steel Plate 作者：王佳 ; 丁波 ; 赵丹阳 ; 刘丹 ; 黄亦斐 ; 刘宇坤 ; 杨尚磊 英文作者：WANG Jia;DING Bo;ZHAO Danyang;LIU Dan;HUANG Yifei;LIU Yukun;YANG Shanglei;Shanghai University of Engineering Science;Shanghai Key Laboratory of Materials Laser Processing and Modification Shanghai, Shanghai Jiao Tong University; 关键词：E36高强船板钢 ; 激光焊接 ; 力学性能 英文关键词：E36 high-strength steel plate;;laser welding;;mechanical property 中文刊名：SJGY 英文刊名：Hot Working Technology 机构：上海工程技术大学材料工程学院;上海交通大学上海市激光制造与材料改性重点实验室; 出版日期：2014-01-15 17:08 出版单位：热加工工艺 年：2014 期：v.43;No.383 基金：上海市教育委员会科研创新重点资助项目(11ZZ177);; 上海市激光制造与材料改性重点实验室(上海交通大学)项目(MLPM2012-1) 语种：中文; 页：SJGY201401012 页数：3 CN：01 ISSN：61-1133/TG 分类号：48-50

摘要

采用HL5000型5 kW CO2激光器对E36高强船板钢试样进行焊接。通过改变激光功率和激光扫描速度等参数,提高E36高强船板钢的焊接质量。研究结果表明:激光焊接后热影响区的硬度最高;当功率不变,扫描速度在一定范围内增加时,焊缝区组织变得愈发细小,硬度值明显增大;当扫描速度不变,功率升高时,焊缝组织愈发粗大,硬度值有所减小;激光功率为3.1 kW时得到的焊缝成形系数最小,焊缝质量更好。
        E36 high-strength steel plate had been welded by HL5000 CO2 laser. The welding quality of E36 high-strength steel plate had been improved by changing the parameters such as laser power and laser scanning speed.The experimental results indicated that HAZ had the highest hardness after laser welding; When laser power was fixed, as scanning speed increased in a certain range, microstructure was finer, hardness increased obviously; When scanning speed was fixed, with the increase of laser power, microstructure was coarser, hardness gradually decreased; The smallest coefficient of weld formation and the most excellent welding quality was obtained when laser power was 3.1 kW.

引文

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