FCAW堆焊双相不锈钢2205工艺分析
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摘要
采用药芯焊丝二氧化碳气体保护焊(FCAW)在低碳钢表面堆焊一层双相不锈钢表层,综合分析了双相钢堆焊层的力学性能、耐腐蚀性能及铁素体-奥氏体(α-γ)两相组织的演变规律。结果表明:选用E2209T1-1药芯焊丝,配合空冷冷却方式,并合理控制焊接热输入为20. 25 kJ/cm,堆焊层可以获得综合力学性能优异的两相组织;两相组织包括沿晶界或亚晶界分布的针叶状奥氏体和不连续分布的块状铁素体,且堆焊层的铁素体含量约为42%;堆焊层兼具优良的力学性能和耐腐蚀性能。
The mechanical properties,corrosion resistance,and the Ferrite-Austenite( α-γ) dual-phase structure of the overlaid duplex stainless steel were analyzed,which was deposited by Flux-cored Arc Welding( FCAW) with CO_2 gas shielded on the low-carbon steel plate. The results show that the E2209T1-1 flux cored wire,the method of air cooling and the welding heat input of 20. 25 k J/cm have no significant effects on the mechanical properties of the surfaced layer. The surfacing layer is mainly composed of massive Ferrite and acicular Austenite along the Ferrite grain or sub-crystal boundaries. The ferrite content of the surfacing layer can reach up to 42%,which makes the surfacing layer more superior performance and corrosion resistance.
The mechanical properties,corrosion resistance,and the Ferrite-Austenite( α-γ) dual-phase structure of the overlaid duplex stainless steel were analyzed,which was deposited by Flux-cored Arc Welding( FCAW) with CO_2 gas shielded on the low-carbon steel plate. The results show that the E2209T1-1 flux cored wire,the method of air cooling and the welding heat input of 20. 25 k J/cm have no significant effects on the mechanical properties of the surfaced layer. The surfacing layer is mainly composed of massive Ferrite and acicular Austenite along the Ferrite grain or sub-crystal boundaries. The ferrite content of the surfacing layer can reach up to 42%,which makes the surfacing layer more superior performance and corrosion resistance.
引文
[1]吴玖.双相不锈钢[M].北京:冶金工业出版社,2000.
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[15]申艳丽,孟庆森,张丙静,等.焊接工艺对2205双相不锈钢焊接接头综合性能的影响[J].焊接,2007(6):47-52.
[16]刘建波,付俊,黄巍.双相不锈钢焊接工艺试验研究[J].焊接,2009(6):47-51.
[17]金晓军,霍立兴,张玉风,等.热输入对双相不锈钢管接头力学和耐腐蚀性能的影响[J].焊接学报,2004,25(3):109-112.
[2]Kou S.Welding Metallurgy[M].New Jersey:A John Wiley&Sons,Inc.,2003.
[3]Joh C L,Damian J K.Welding Metallurgy and Weldability of Stainless Steels[M].陈剑虹,译.北京:机械工业出版社,2008.
[4]王刚,胡希海,张超,等.双相钢带极堆焊的试验研究[J].制造与安装,2008,25(6):32-34.
[5]金东发,邹坤.双相钢焊条电弧焊堆焊工艺研究[J].制造与安装,2014,31(11):74-78.
[6]尹德华,任世宏,张凯,等.双相不锈钢药芯焊丝堆焊试验[J].甘肃科技,2014,30(19):47-49.
[7]Davies A.C.The Science and Practice of Welding[M].Cambridge:Press Syndicate of the University of Cambridge,2003.
[8]王宗杰.熔焊方法及设备[M].北京:机械工业出版社,2011.
[9]李伟,栗卓新,李国栋,等.国内外双相不锈钢焊接的研究进展[J].焊接,2007(1):11-15.
[10]张志强,邢洪阳,徐连勇,等.双相不锈钢多层多道焊接接头微观组织表征[J].焊接学报,2017,38(5):79-82.
[11]Westin E M,Stelling K,Gumenyuk A.Single-pass laser-GMA hybrid welding of 13.5 mm thick duplex stainless steel[J].Welding in the World,2011,55(1-2):39-49.
[12]杜则裕.材料焊接科学基础[M].北京:冶金工业出版社,2012.
[13]中国机械工程学会焊接学会.焊接手册2-材料的焊接[M].北京:机械工业出版社,2008.
[14]McPherson N A,Li Y,Baker T N.Microstructure and properties of as welded duplex stainless steel[J].Science and Technology of Welding and Joining,2000(5):235-244.
[15]申艳丽,孟庆森,张丙静,等.焊接工艺对2205双相不锈钢焊接接头综合性能的影响[J].焊接,2007(6):47-52.
[16]刘建波,付俊,黄巍.双相不锈钢焊接工艺试验研究[J].焊接,2009(6):47-51.
[17]金晓军,霍立兴,张玉风,等.热输入对双相不锈钢管接头力学和耐腐蚀性能的影响[J].焊接学报,2004,25(3):109-112.