不同工艺参数下0Cr18Ni9钢薄壁管脉冲钨极氩弧焊接头的组织与拉伸性能
Microstructures and Tensile Properties of 0Cr18Ni9 Steel Thin-Wall Tube Welded Joints by P-TIG Under Different Process Parameters
摘 要
采用脉冲钨极氩弧焊(P-TIG)对规格为?14 mm×2 mm的0Cr18Ni9钢管进行焊接,研究50%脉宽比以及不同基值电流(20~30 A)、峰值电流(40~60 A)、脉冲频率(0.3,0.5 Hz)下接头的组织及拉伸性能。结果表明:不同工艺参数下接头焊缝区组织均为奥氏体+δ铁素体,但δ铁素体形态及含量有明显差异,热影响区奥氏体晶粒发生明显粗化。当脉冲基值电流为20 A,峰值电流为40 A,脉冲频率为0.3 Hz时,接头焊缝区δ铁素体呈蠕虫状,含量较多,热影响区奥氏体晶粒尺寸较小,接头拉伸性能最优,屈服强度为401.38 MPa,抗拉强度为701.51 MPa,屈强比为0.57,断口由形状均匀且尺寸较小的等轴韧窝组成。
奥氏体不锈钢管
δ铁素体
拉伸性能
P-TIG welding
austenitic stainless steel tube
δ ferrite
tensile property
Abstract
Pulse tungsten inert gas arc welding(P-TIG) was applied to weld 0 Cr18Ni9 steel tubes with specification of ?14 mm×2 mm, and the microstructure and tensile properties of joints under different base current(20-30 A), peak current(40-60 A), pulse frequency(0.3,0.5 Hz) and pulse width ratio of 50% were studied. The results show that the microstructures of the weld of joints under different process parameters were all austenite+δ ferrite, but the shape and content of the δ ferrite were significantly different; the austenite grains in the heat-affected zone were significantly coarsened. Under the pulse base current of 20 A, the peak current of 40 A and the pulse frequency of 0.3 Hz, the ferrite in the weld of the joint was vermicular with relatively high content, and the austenite grain size in the heat affected zone was small; the tensile properties of the joint was the best with yield strength of 401.38 MPa, tensile strength of 701.51 MPa and yield ratio of 0.57, and the fracture was composed of equiaxed dimples with uniform shape and small size.
中图分类号 TG407 DOI 10.11973/jxgccl202202009
所属栏目 材料性能及应用
基金项目
收稿日期 2020/12/31
修改稿日期 2021/12/21
网络出版日期
作者单位点击查看
备注李宁(1971-),男,山西阳泉人,高级工程师,学士
引用该论文: LI Ning,LIU Shaolong,DING Xuesong,XU Yuhong,FAN Wenlei,SU Huanchao,WANG Boyu. Microstructures and Tensile Properties of 0Cr18Ni9 Steel Thin-Wall Tube Welded Joints by P-TIG Under Different Process Parameters[J]. Materials for mechancial engineering, 2022, 46(2): 58～62
李宁,刘少龙,丁雪松,徐雨红,范文磊,苏焕朝,王博玉. 不同工艺参数下0Cr18Ni9钢薄壁管脉冲钨极氩弧焊接头的组织与拉伸性能[J]. 机械工程材料, 2022, 46(2): 58～62
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参考文献
【1】刘瑜.奥氏体不锈钢 24Mn18Cr3Ni0.62N疲劳性能的研究[D].镇江:江苏大学,2009.LIU Y.Study on fatigue properties of a new type austenitic stainless steel 24Mn18Cr3Ni0.62N[D].Zhenjiang:Jiangsu University,2009.
【2】邱光银.奥氏体不锈钢管道焊缝超声相控阵检测技术研究[D].宜昌:三峡大学,2019.QIU G Y.Research on ultrasonic phased array detection technology for austenitic stainless steel pipe weld[D].Yichang:China Three Gorges University,2019.
【3】辛立军,苏海,周岐,等.不锈钢薄板激光高速焊接的工艺研究[J].热加工工艺,2018,47(3):57-60.XIN L J,SU H,ZHOU Q,et al.Study on high speed laser welding process of stainless steel sheet[J].Hot Working Technology,2018,47(3):57-60.
【4】张晓鸿,马朋召,张康,等.脉冲TIG焊接工艺参数对高温镍基合金焊缝组织的调控研究[J].机械工程学报,2018,54(2):93-101.ZHANG X H,MA P Z,ZHANG K,et al.Study on controlling of welding seam microstructure about nickel-based hightemperature alloy by pulse TIG welding process[J].Journal of Mechanical Engineering,2018,54(2):93-101.
【5】郭树伟.S.S304薄壁不锈钢管背面充氮保护钨极氩弧焊工艺[J].焊接技术,2001,30(增刊1):98.GUO S W.S.S304thin-walled stainless steel pipe backside nitrogen-protected argon tungsten arc welding process[J].Welding Technology,2001,30(S1):98.
【6】赵勇桃,赵莉萍,麻永林,等.薄壁1Cr18Ni9Ti奥氏体不锈钢的焊接试验[J].内蒙古科技大学学报,2008,27(3):213-215.ZHAO Y T,ZHAO L P,MA Y L,et al.The welding experiment of thin-wall 1Cr18Ni9Ti stainless steels[J].Journal of Inner Mongolia University of Science and Technology,2008,27(3):213-215.
【7】秦国梁,孟祥萌,付邦龙,等.薄壁不锈钢管列置双TIG电弧高速焊接工艺[J].机械工程学报,2015,51(12):83-88.QIN G L,MENG X M,FU B L,et al.High speed tandem TIGwelding of thin-walled stainless steel pipe[J].Journal of Mechanical Engineering,2015,51(12):83-88.
【8】张鑫,杨棉绒.基于计算机技术薄壁不锈钢管焊接的仿真分析[J].热加工工艺,2013,42(21):188-191.ZHANG X,YANG M R.Numerical simulation of thin-walled stainless steel tube's welding based on computer technique[J].Hot Working Technology,2013,42(21):188-191.
【9】陶万勇,徐小明,王璐.1Cr18Ni9Ti不锈钢薄壁管氩弧焊焊接变形的工艺控制方法研究[J].科技创新与应用,2020(11):110-111.TAO W Y,XU X M,WANG L.Research on process control method of argon arc welding deformation of 1Cr18Ni9Ti stainless steel thin-walled tube[J].Technology Innovation and Application,2020(11):110-111.
【10】陆娅.304奥氏体不锈钢凝固组织的形成及演化规律研究[D].昆明:昆明理工大学,2016.LU Y.Research on the formation and evolution of solidified structure of 304 austenitic stainless steel[D].Kunming:Kunming University of Science and Technology,2016.
【11】申丽娟.0Cr 18Ni9奥氏体不锈钢凝固过程组织转变研究[D].包头:内蒙古科技大学,2012.SHEN L J.Microstructure transformation of 0Cr 18Ni9 Austenite stainless steel under solidification[D].Baotou:Inner Mongolia University of Science & Technology,2012.
【12】陈洋,吴世凯,肖荣诗.SUS301L不锈钢CO2激光-MIG复合焊接头组织性能研究[J].中国激光,2014,41(1):71-76.CHEN Y,WU S K,XIAO R S.Mircostructure and performance of CO2-MIG hybrid weldingof SUS301L stainless steel[J].Chinese Journal of Lasers,2014,41(1):71-76.
【13】KAMIYA O,KUMAGAI K,KIKUCHI Y.The effects of δ-ferrite morphology on low temperature fracture toughness of austenitic stainless steel weld metal[J].Quarterly Journal of the Japan Welding Society,1991,9(4):525-531.
【14】陈晓晖,张述泉,冉先喆,等.电弧功率对MIG电弧增材制造316L奥氏体不锈钢组织及力学性能的影响[J].焊接学报,2020,41(5):42-49.CHEN X H,ZHANG S Q,RAN X Z,et al.Effect of arc power on microstructure and mechanical properties of austenitic stainless steel 316L fabricated by high efficient arc additive manufacturing[J].Transactions of the China Welding Institution,2020,41(5):42-49.
【2】邱光银.奥氏体不锈钢管道焊缝超声相控阵检测技术研究[D].宜昌:三峡大学,2019.QIU G Y.Research on ultrasonic phased array detection technology for austenitic stainless steel pipe weld[D].Yichang:China Three Gorges University,2019.
【3】辛立军,苏海,周岐,等.不锈钢薄板激光高速焊接的工艺研究[J].热加工工艺,2018,47(3):57-60.XIN L J,SU H,ZHOU Q,et al.Study on high speed laser welding process of stainless steel sheet[J].Hot Working Technology,2018,47(3):57-60.
【4】张晓鸿,马朋召,张康,等.脉冲TIG焊接工艺参数对高温镍基合金焊缝组织的调控研究[J].机械工程学报,2018,54(2):93-101.ZHANG X H,MA P Z,ZHANG K,et al.Study on controlling of welding seam microstructure about nickel-based hightemperature alloy by pulse TIG welding process[J].Journal of Mechanical Engineering,2018,54(2):93-101.
【5】郭树伟.S.S304薄壁不锈钢管背面充氮保护钨极氩弧焊工艺[J].焊接技术,2001,30(增刊1):98.GUO S W.S.S304thin-walled stainless steel pipe backside nitrogen-protected argon tungsten arc welding process[J].Welding Technology,2001,30(S1):98.
【6】赵勇桃,赵莉萍,麻永林,等.薄壁1Cr18Ni9Ti奥氏体不锈钢的焊接试验[J].内蒙古科技大学学报,2008,27(3):213-215.ZHAO Y T,ZHAO L P,MA Y L,et al.The welding experiment of thin-wall 1Cr18Ni9Ti stainless steels[J].Journal of Inner Mongolia University of Science and Technology,2008,27(3):213-215.
【7】秦国梁,孟祥萌,付邦龙,等.薄壁不锈钢管列置双TIG电弧高速焊接工艺[J].机械工程学报,2015,51(12):83-88.QIN G L,MENG X M,FU B L,et al.High speed tandem TIGwelding of thin-walled stainless steel pipe[J].Journal of Mechanical Engineering,2015,51(12):83-88.
【8】张鑫,杨棉绒.基于计算机技术薄壁不锈钢管焊接的仿真分析[J].热加工工艺,2013,42(21):188-191.ZHANG X,YANG M R.Numerical simulation of thin-walled stainless steel tube's welding based on computer technique[J].Hot Working Technology,2013,42(21):188-191.
【9】陶万勇,徐小明,王璐.1Cr18Ni9Ti不锈钢薄壁管氩弧焊焊接变形的工艺控制方法研究[J].科技创新与应用,2020(11):110-111.TAO W Y,XU X M,WANG L.Research on process control method of argon arc welding deformation of 1Cr18Ni9Ti stainless steel thin-walled tube[J].Technology Innovation and Application,2020(11):110-111.
【10】陆娅.304奥氏体不锈钢凝固组织的形成及演化规律研究[D].昆明:昆明理工大学,2016.LU Y.Research on the formation and evolution of solidified structure of 304 austenitic stainless steel[D].Kunming:Kunming University of Science and Technology,2016.
【11】申丽娟.0Cr 18Ni9奥氏体不锈钢凝固过程组织转变研究[D].包头:内蒙古科技大学,2012.SHEN L J.Microstructure transformation of 0Cr 18Ni9 Austenite stainless steel under solidification[D].Baotou:Inner Mongolia University of Science & Technology,2012.
【12】陈洋,吴世凯,肖荣诗.SUS301L不锈钢CO2激光-MIG复合焊接头组织性能研究[J].中国激光,2014,41(1):71-76.CHEN Y,WU S K,XIAO R S.Mircostructure and performance of CO2-MIG hybrid weldingof SUS301L stainless steel[J].Chinese Journal of Lasers,2014,41(1):71-76.
【13】KAMIYA O,KUMAGAI K,KIKUCHI Y.The effects of δ-ferrite morphology on low temperature fracture toughness of austenitic stainless steel weld metal[J].Quarterly Journal of the Japan Welding Society,1991,9(4):525-531.
【14】陈晓晖,张述泉,冉先喆,等.电弧功率对MIG电弧增材制造316L奥氏体不锈钢组织及力学性能的影响[J].焊接学报,2020,41(5):42-49.CHEN X H,ZHANG S Q,RAN X Z,et al.Effect of arc power on microstructure and mechanical properties of austenitic stainless steel 316L fabricated by high efficient arc additive manufacturing[J].Transactions of the China Welding Institution,2020,41(5):42-49.
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