Effects of Welding Speed on Microstructure and Mechanical Properties of Laser Welded Joint of TRIP590 High Strength Steel
摘 要
采用光纤激光器对1.5mm厚TRIP590钢板进行对接焊,观察了接头的宏观形貌和显微组织,测试了其硬度和拉伸性能,分析了焊接速度(0.050,0.067,0.083m·s-1)对焊缝成形、接头组织与力学性能的影响。结果表明:较低和较高的焊接速度均不利于焊缝成形,焊缝表面均有较大的凹陷,焊接速度对组织与性能影响不大;焊缝区和近焊缝热影响区组织主要为马氏体组织,该区硬度较高,约为母材的2倍;近母材侧热影响区组织主要为铁素体和马氏体组织,且距焊缝越远,马氏体组织越少,硬度也急剧下降;焊接接头的屈服强度和抗拉强度均稍高于母材的,塑性略低于母材的;接头均在母材区发生断裂,且为韧性断裂。
Abstract
1.5 mm thick TRIP590 steel plates were butt welded by fiber lasers. Then the macro-morphology and microstructure of the joint was observed, the hardness and tensile properties were tested, and the influences of welding speed (0.050, 0.067, 0.083 m ·s-1) on the weld seam formation and on the microstructure and mechanical properties of welded joint were analyzed. The results show that a relatively low and high welding speed was not good for the formation of weld seam and led to relatively large depressions on weld seam surface. The welding speed had little influence on the microstructure and properties. The microstructures of weld seam and heat affected zone near weld mainly consisted of martensite, resulting in relatively high hardness of the two zones, which was nearly twice as high as that of base metal. The microstructure of heat affected zone near base metal was mainly composed of martensite and ferrite, and the martensite amounts decreased gradually with the increase of distance to the weld center, leading to the sharp decrease of hardness. Both the yield strength and tensile strength of the joints were slightly higher while the plasticity was slightly lower than those of base metal. The joints fractured in base metal and showed a ductile fracture.
中图分类号 TG142.1 DOI 10.11973/jxgccl201704020
所属栏目 材料性能及应用
基金项目 上海汽车工业科技发展基金资助项目(1404);上海工程技术大学研究生科研创新项目(15KY0513)
收稿日期 2016/2/29
修改稿日期 2017/3/23
网络出版日期
作者单位点击查看
备注杨智华(1992-),男,江西九江人,硕士研究生.
引用该论文: YANG Zhi-hua,YANG Shang-lei,TUO Wen-hai,JIANG Yi-shuai,WANG Yan,ZHANG Dong-mei. Effects of Welding Speed on Microstructure and Mechanical Properties of Laser Welded Joint of TRIP590 High Strength Steel[J]. Materials for mechancial engineering, 2017, 41(4): 94~97
杨智华,杨尚磊,庹文海,姜亦帅,王妍,张冬梅. 焊接速度对TRIP590高强钢激光焊接接头组织与力学性能的影响[J]. 机械工程材料, 2017, 41(4): 94~97
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】冯奇, 范军锋, 王斌, 等. 汽车的轻量化技术与节能环保[J]. 汽车工艺与材料, 2010(2):4-6.
【2】马鸣图. 先进汽车用钢[M]. 北京:化学工业出版社, 2008.
【3】景财年.相变诱发塑性钢的组织性能[M].北京:冶金工业出版社,2012.
【4】刘超, 王磊, 刘杨. 汽车用先进高强钢的发展及其在车身设计中的应用[J]. 特钢技术, 2012, 18(2):1-4.
【5】赵仕宇, 周超, 詹艳然. TRIP600钢板成形汽车前纵梁冲压工艺研究[J]. 现代制造工程, 2014(8):83-89.
【6】谢盼. Fe-Mn-Al-Si系TRIP/TWIP钢激光焊接及其接头的组织性能研究[D]. 长沙:湖南大学, 2013.
【7】ZHAO L, WIBOWO M K, HERMANS M J M,et al. Retention of austenite in the welded microstructure of a 0.16C-1.6Mn-1.5Si (wt.%) TRIP steel[J]. Journal of Materials Processing Technology, 2009, 209(12/13):5286-5292.
【8】于燕,杨海峰,张小盟. TRIP800钢板点焊接头的组织和性能[J]. 机械工程材料,2013, 37(9):13-15.
【9】倪晓梅. 激光焊接高强度TRIP钢板的组织性能研究[D]. 济南:山东建筑大学, 2014.
【10】AL HARBI F, PERELOMA E V. Effect of thermomechanical processing parameters on the microstructure development in low Si TRIP steel[J]. Materials Science Forum, 2010, 654/656:254-257.
【11】NAYAK S S, HERNANDEZ V H B, OKITA Y, et al. Microstructure-hardness relationship in the fusion zone of TRIP steel welds[J]. Materials Science and Engineering A, 2012, 551(8):73-81.
【12】王文权,商延赓,李秀娟,等.激光焊接650 MPa相变诱发塑性钢的组织与性能[J].吉林大学学报(工学版),2012, 42(5):1203-1207.
【13】邹江林. 高功率光纤激光深熔焊接特性研究[D].北京:北京工业大学, 2014.
【14】张明军. 万瓦级光纤激光深熔焊接厚板金属蒸气行为与缺陷控制[D].长沙:湖南大学, 2013.
【2】马鸣图. 先进汽车用钢[M]. 北京:化学工业出版社, 2008.
【3】景财年.相变诱发塑性钢的组织性能[M].北京:冶金工业出版社,2012.
【4】刘超, 王磊, 刘杨. 汽车用先进高强钢的发展及其在车身设计中的应用[J]. 特钢技术, 2012, 18(2):1-4.
【5】赵仕宇, 周超, 詹艳然. TRIP600钢板成形汽车前纵梁冲压工艺研究[J]. 现代制造工程, 2014(8):83-89.
【6】谢盼. Fe-Mn-Al-Si系TRIP/TWIP钢激光焊接及其接头的组织性能研究[D]. 长沙:湖南大学, 2013.
【7】ZHAO L, WIBOWO M K, HERMANS M J M,et al. Retention of austenite in the welded microstructure of a 0.16C-1.6Mn-1.5Si (wt.%) TRIP steel[J]. Journal of Materials Processing Technology, 2009, 209(12/13):5286-5292.
【8】于燕,杨海峰,张小盟. TRIP800钢板点焊接头的组织和性能[J]. 机械工程材料,2013, 37(9):13-15.
【9】倪晓梅. 激光焊接高强度TRIP钢板的组织性能研究[D]. 济南:山东建筑大学, 2014.
【10】AL HARBI F, PERELOMA E V. Effect of thermomechanical processing parameters on the microstructure development in low Si TRIP steel[J]. Materials Science Forum, 2010, 654/656:254-257.
【11】NAYAK S S, HERNANDEZ V H B, OKITA Y, et al. Microstructure-hardness relationship in the fusion zone of TRIP steel welds[J]. Materials Science and Engineering A, 2012, 551(8):73-81.
【12】王文权,商延赓,李秀娟,等.激光焊接650 MPa相变诱发塑性钢的组织与性能[J].吉林大学学报(工学版),2012, 42(5):1203-1207.
【13】邹江林. 高功率光纤激光深熔焊接特性研究[D].北京:北京工业大学, 2014.
【14】张明军. 万瓦级光纤激光深熔焊接厚板金属蒸气行为与缺陷控制[D].长沙:湖南大学, 2013.
相关信息