热输入对2205双相不锈钢焊接接头性能的影响  

Influence of Heat Input on Properties of 2205 Duplex Stainless Steel Welded Joints

作　　者：黄杰[1] 陈博文[1] 丁毅[1] 孟宪虎[2] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]江苏众信绿色管业科技有限公司,江苏南京210012

出　　处：《热加工工艺》2017年第3期246-248,共3页Hot Working Technology

摘　　要：采用5种不同的TIG焊电流参数来控制焊接热输入,研究了不同的焊接热输入对2205双相不锈钢焊接接头组织、硬度和耐蚀性的影响。金相与硬度的结果表明,焊接热输入为5.8 k J/cm时奥氏体含量最高,硬度最大,且奥氏体的含量与硬度呈正相关;电化学试验表明,焊接热输入为5.8 k J/cm时接头具有最佳的耐蚀性。The welding heat input was controlled by using five different TIG welding current parameters, and the microstrucaxre, microhardness and corrosion resistance of 2205 duplex stainless steel welded joint with different heat input were studied. The metallographic and microhardness results show that the austenite proportion and microhardness are maximum when the welding heat input is 5.8 kJ/cm. And the austenite proportion is positively correlated with the hardness. The electrochemical experiments show that the joint has the best corrosion resistance when the welding heat input is 5.8 kJ/cm.

关 键 词：2205双相不锈钢 TIG焊 显微组织 耐蚀性 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG457.11[金属学及工艺—金属材料]