Experimental Study of Laser Welding Process and Properties of 2205 Duplex Stainless Sheet Steels

摘要：

　　2205 duplex (austenitic-ferritic) stainless steel has a good weldability and an excellent corrosion resistance.The good weldability is achieved when in close to 50-50 ferrite-austenite ratio.In this study, the welding process and properties were investigated by pulsed Nd∶YAG laser welding.Tensile test, surface microhardness test, surface topography and microstructures of 2205 duplex stainless steel welds were performed under different welding speeds, input currents, pulse widths,frequencies and defocus distance.The relationship among them was revealed and the optimal welding parameters were obtained.The results showed in the condition ofI=160 A, T=5 ms,f=25 Hz, V=500 mm/min and Z =-1 mm, the amount of ferrite and austenite in welds was roughly same,overlap rate of solder joints was above 78% and the weldability was good.

关键词： Laser welding 2205 Duplex stainless steel Mechanical behavior Microscopic structure

作者: Shanshan Hu Bitao Yang Bodong Zeng Dongrui Zheng Zili Yang

作者单位: College of Mechanical Engineering, Guangxi University, 530004 Nanning, PR China

会议类型: 国际会议

会议名称: The 12th Asia-Pacific Conference on Materials Processing(APCMP2016)(第12届亚太材料加工会议)

会议地点: 青岛

会议语种:英文

页码: 141-146

在线出版日期: 2016-06-16（万方平台首次上网日期，不代表论文的发表时间）