SHAO Tianwei, XUE Junliang, WAN Zhandong, GUO Wei. Microstructure and mechanical properties of laser welded joint of dissimilar advanced high strength steels QP980-DP980[J]. WELDING & JOINING, 2019, (7): 5-9. DOI: 10.12073/j.hj.20190410001
Citation: SHAO Tianwei, XUE Junliang, WAN Zhandong, GUO Wei. Microstructure and mechanical properties of laser welded joint of dissimilar advanced high strength steels QP980-DP980[J]. WELDING & JOINING, 2019, (7): 5-9. DOI: 10.12073/j.hj.20190410001

Microstructure and mechanical properties of laser welded joint of dissimilar advanced high strength steels QP980-DP980

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  • Received Date: April 09, 2019
  • Fiber laser welding was used to join QP980 and DP980 advanced high strength steels. The microstructure,hardness distribution and tensile properties of the dissimilar welded joints were analyzed. The fracture morphology was observed and analyzed. The results showed that the fusion zone was composed of full martensite and showed the highest hardness( 535 HV). The heat affected zone( HAZ) on both sides could be divided into super-critical zone,inter-critical zone,and sub-critical zone. The super-critical zone in the HAZ on both sides was all martensite due to the fast cooling rate,and the hardness was improved. The inter-critical zone consisted of martensite and ferrite. The sub-critical zone on the QP980 side consisted of tempered martensite,ferrite and retained austenite. The sub-critical zone on the DP980 side consisted of tempered martensite and ferrite. The hardness of the sub-critical zone was decreased due to the appearance of tempered martensite. The tensile fracture of the joint occurred in the HAZ of DP980 and exhibited ductile fracture mode. The tensile strength could reach 98. 9% of DP980 base metal,and the elongation of joints was 70. 9% than that of DP980 base metal.
  • [1]
    计遥遥.DP500钢脉冲激光焊接工艺与组织及性能关系的研究[D].安徽马鞍山:安徽工业大学硕士学位论文,2013.
    [2]
    Shome M,Tumuluru M,Shome M,et al.Welding and joining of advanced high strength steels(AHSS)[M].Woodhead Publishing,UK,2015.
    [3]
    王文权,马凯,孙大千,等.CO2激光焊接600 MPa DP钢接头组织与性能[J].焊接学报,2010,31(9):25-28.
    [4]
    孙晓屿,黄雷王,武荣.DP780双相钢电阻点焊的数值模拟及试验验证[J].焊接学报,2016,37(4):85-88.
    [5]
    于迎豪,马芳,韦习成,等.马氏体含量对双相钢焊点拉拉疲劳性能的影响[J].焊接学报,2018,39(5):109-113.
    [6]
    王文权,马凯,孙大千,等.Nd:YAG激光焊接800 MPa TRIP钢的接头组织与性能[J].焊接学报,2010,31(6):29-32.
    [7]
    米振莉,杨林,李志超,等.不同焊接方法对TWIP钢焊后热影响区组织和性能的影响[J].焊接学报,2013,34(5):9-12.
    [8]
    轩建伟,朱定一,王吉良,等.高碳含铜TWIP钢TIG焊接头组织与性能[J].焊接学报,2016,37(5):93-96.
    [9]
    韩志强,董丹阳,刘杨,等.光纤激光焊接950 MPa级车用TWIP钢接头组织和性能[J].焊接学报,2018,39(5):63-68.
    [10]
    李萍,丁方强,薛克敏.低活化马氏体钢真空扩散焊接工艺[J].焊接学报,2018,39(1):93-96.
    [11]
    Speer J,Matlock D K,De Cooman B C,et al.Carbon partitioning into austenite after martensite transformation[J].Acta Materialia,2003,51(9):2611-2622.
    [12]
    Farabi N,Chen D L,Zhou Y.Microstructure and mechanical properties of laser welded dissimilar DP600/DP980 dualphase steel joints[J].Journal of Alloys and Compounds,2011,509(3):982-989.
    [13]
    李正文,高向东,李秀忠.激光焊接不锈钢技术[J].焊接,2016(11):61-66.
    [14]
    潘际銮,郑军,屈岳波.激光焊技术的发展[J].焊接,2009(2):18-21,68.
    [15]
    王金凤,王立君,杨立军,等.DP1000高强钢激光焊接接头组织性能研究[J].中国激光,2014,41(9):83-89.
    [16]
    吴昌忠,陈怀宁,范闽宁,等.1 000 MPa级高强钢焊接热影响区组织和韧性[J].焊接学报,2011,32(5):97-100.
    [17]
    Guo W,Wan Z,Peng P,et al.Microstructure and mechanical properties of fiber laser welded QP980 steel[J].Journal of Materials Processing Technology,2018,256:229-238.
    [18]
    Li W,Ma L,Peng P,et al.Microstructural evolution and deformation behavior of fiber laser welded QP980 steel joint[J].Materials Science and Engineering A,2018,717:124-133
    [19]
    王金凤,杨立军,孙明升,等.快速冷却对DP1000双相钢激光焊接接头性能的影响[J].焊接学报,2019,40(1):113-118,166.
    [20]
    Dong D,Liu Y,Wang L,et al.Microstructure and deformationbehaviour of laser welded dissimilar dual phase steel joints[J].Science & Technology of Welding & Joining,2016,21(2):75-82.
    [21]
    Zhang K,Liu P,Li W,et al.Ultrahigh strength-ductility steel treated by a novel quenching-partitioning-tempering process[J].Materials Science and Engineering A,2014,619:205-211.
    [22]
    钟群鹏,赵子华,张峥.断口学的发展及微观断裂机理研究[J].机械强度,2005,27(3):358-370.
    [23]
    Avramovic-Cingara G,Saleh C A R,Jain M K,et al.Void nucleation and growth in dual-phase steel 600 during uniaxial tensile testing[J].Metallurgical and Materials Transactions A,2009,40(13):3117-3127.
    [24]
    Saeidi N,Ashrafizadeh F,Niroumand B,et al.Void coalescence and fracture behavior of notched and un-notched tensile tested specimens in fine grain dual phase steel[J].Materials Science and Engineering A,2015,644:210-217.
    [25]
    Jia Q,Guo W,Wan Z,et al.Microstructure and mechanical properties of laser welded dissimilar joints between QP and boron alloyed martensitic steels[J].Journal of Materials Processing Technology,2018,259:58-67
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