1Cr17不锈钢表面TIG冷焊重熔和丝材熔敷工艺及改性层的组织和性能
Remelting and Wire Cladding Process by TIG Cold Welding on Surface of 1Cr17 Stainless Steel and Microstructures and Properties of Modified Layers
摘 要
在1Cr17不锈钢表面进行钨极惰性气体保护（TIG）冷焊重熔及ER347L不锈钢焊丝熔敷工艺试验，并研究了重熔层和熔敷层的显微组织、显微硬度以及在质量分数为3.5% NaCl溶液中的电化学腐蚀性能。结果表明：TIG冷焊重熔时，当冷焊时间分别在200～150 ms、150～100 ms、100～50 ms范围内时，获得成形良好重熔层所需最小冷焊电流分别为40，70，100 A；TIG冷焊熔敷时，当冷焊时间分别为50，100，160，200 ms时，获得成形良好熔敷层所需最小冷焊电流分别为230，190，150，120 A。TIG冷焊重熔或熔敷形成的热影响区（HAZ）晶粒较1Cr17不锈钢母材未发生明显粗化，HAZ宽度不超过250 μm，重熔层和熔敷层的组织较母材细小；重熔层和熔敷层比母材具有更高的硬度和更好的耐腐蚀性能。
铁素体不锈钢
重熔
丝材熔敷
显微组织
耐腐蚀性能
TIG cold welding
ferritic stainless steel
remelting
wire cladding
microstructure
corrosion resistance
Abstract
Process tests for remelting and cladding of ER347L stainless steel wires by tungsten inert gas arc (TIG)cold welding were carried out on surface of 1Cr17 stainless steel.The microstructure, microhardness and electrochemical corrosion property in 3.5wt% NaCl solution of the remelting layer and cladding layer were studied.The results show that for the TIG cold welding remelting, when the cold welding time was in the range of 200-150 ms, 150-100 ms, 100-50 ms, the required minimum cold welding current for obtaining well-formed remelting layer was 40, 70, 100 A, respectively.For the TIG cold welding cladding, when the cold welding time was 50, 100, 160, 200 ms, the required minimum cold welding current for obtaining well-formed cladding layer was 230, 190, 150, 120 A, respectively.The grains of heat affected zone (HAZ)formed in TIG cold welding remelting or cladding were not coarsened comparing with those of 1Cr17 stainless steel base metal, and the HAZ width did not exceed 250 μm.The microstructures of the remelting layer and cladding layer were finer than that of the base metal.The microhardness and corrosion resistance of the remelting layer and cladding layer were higher than those of the base metal.
中图分类号 TG179 DOI 10.11973/jxgccl202112008
所属栏目 材料性能及应用
基金项目 国家自然科学基金资助项目（51765030）；甘肃省自然科学基金资助项目（20JR5RA416）
收稿日期 2020/9/29
修改稿日期 2021/11/23
网络出版日期
作者单位点击查看
备注郑韶先(1978-)，男，甘肃兰州人，教授，博士
引用该论文: ZHENG Shaoxian,WANG Junping,YANG Meijuan,E Xin. Remelting and Wire Cladding Process by TIG Cold Welding on Surface of 1Cr17 Stainless Steel and Microstructures and Properties of Modified Layers[J]. Materials for mechancial engineering, 2021, 45(12): 42～48
郑韶先,汪军平,杨妹娟,俄馨. 1Cr17不锈钢表面TIG冷焊重熔和丝材熔敷工艺及改性层的组织和性能[J]. 机械工程材料, 2021, 45(12): 42～48
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【13】李晓延,武传松,李午申.中国焊接制造领域学科发展研究[J].机械工程学报,2012,48(6):19-31. LI X Y,WU C S,LI W S.Study on the progress of welding science and technology in China[J].Journal of Mechanical Engineering,2012,48(6):19-31.
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【16】徐庆钟,李方义,秦顺顺,等.冷焊工艺参数对HT250表面修复层性能的影响[J].机械工程学报,2013,49(7):101-105. XU Q Z,LI F Y,QIN S S,et al.Effect of cold-welding parameters on properties of HT250 surface repaired layer[J].Journal of Mechanical Engineering,2013,49(7):101-105.
【17】王维,张永泽,杨光,等.冷焊与冷焊激光复合修复ZL114A铝合金组织和力学性能研究[J].稀有金属,2020,44(1):18-25. WANG W,ZHANG Y Z,YANG G,et al.Microstructure and mechanical properties of cold-welding repaired and cold-welding+laser deposition repaired ZL114A aluminium alloy[J].Chinese Journal of Rare Metals,2020,44(1):18-25.
【18】关锰,贾永锋,张春华,等.高能脉冲冷焊Fe基合金改性层的组织及性能[J].沈阳工业大学学报,2016,38(6):628-633. GUAN M,JIA Y F,ZHANG C H,et al.Microstructure and properties of Fe-based alloy modified layer prepared with high-energy pulse cold welding[J].Journal of Shenyang University of Technology,2016,38(6):628-633.
【19】张庆,孟令东,杨军伟,等.高能脉冲精密冷补技术用于修复零件表面局部缺损[J].中国表面工程,2011,24(1):79-83. ZHANG Q,MENG L D,YANG J W,et al.High energy pulse precision cold-welding technology for repairing local surface default of metal parts[J].China Surface Engineering,2011,24(1):79-83.
【20】郭强,陈长风,李世瀚,等.冷焊修复层在H2S环境下的开裂行为研究[J].中国腐蚀与防护学报,2018,38(2):167-173. GUO Q,CHEN C F,LI S H,et al.Cracking behavior of cold-welding layer on A350 LF2 steel in H2S environment[J].Journal of Chinese Society for Corrosion and Protection,2018,38(2):167-173.
【21】WANG S G,MA Q H,LI Y.Characterization of microstructure,mechanical properties and corrosion resistance of dissimilar welded joint between 2205 duplex stainless steel and 16MnR[J].Materials & Design,2011,32(2):831-837.
【22】罗检,张勇,钟庆东,等.晶粒度对一些常用金属耐腐蚀性能的影响[J].腐蚀与防护,2012,33(4):349-352. LUO J,ZHANG Y,ZHONG Q D,et al.Influence of grain size on corrosion resistant of commonly used metals[J].Corrosion & Protection,2012,33(4):349-352.
【23】周丽丹,张婷婷,王志斌,等.443铁素体不锈钢电阻缝焊接头的组织与性能[J].机械工程材料,2013,37(3):42-45. ZHOU L D,ZHANG T T,WANG Z B,et al.Microstructure and properties of joint of 443 ferritic stainless steel welded by resistance seam welding[J].Materials for Mechanical Engineering,2013,37(3):42-45.
【24】龚利华,戚霞.焊接及热处理工艺对0Cr18Ni9Ti不锈钢耐蚀性的影响[J].金属热处理,2009,34(6):90-93. GONG L H,QI X.Influence of welding and heat treatment processes on corrosion resistance of 0Cr18Ni9Ti stainless steel[J].Heat Treatment of Metals,2009,34(6):90-93.
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