J. Mater. Sci. Technol. ›› 2010, Vol. 26 ›› Issue (5): 477-480.

• Research Articles • 上一篇    

Mechanical and Galvano-chemistry property variation within dissimilar metal weld between 1Cr18Ni9Ti and 1Cr13 stainless steel

zhaoyongtao   

  1. 内蒙古科技大学材料与冶金学院
  • 收稿日期:2009-03-06 修回日期:2009-08-13 出版日期:2010-05-31 发布日期:2010-06-01
  • 通讯作者: zhaoyongtao

Mechanical and Galvano-chemistry Property Variation within Dissimilar Metal Weld between 1Cr18Ni9Ti and 1Cr13 Stainless Steel

Yongtao Zhao, Junhui Dong, Yonglin Ma, Liping Zhao, Xiaobing Pei   

  1. Material and Metallurgy Engineering School, University of Science and Technology Inner Mongolia, Baotou 014010, China
  • Received:2009-03-06 Revised:2009-08-13 Online:2010-05-31 Published:2010-06-01
  • Contact: yong tao zhao

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摘要：

Abstract: The purpose of this study is to discuss the microstructure and properties variation of the weld metal in the dissimilar stainless steels during the argon tungsten-arc welding process. Because of the existence of different materials and chemistry variation within welds, properties, such as tensile and fracture properties and so on, are expected to show spatial variation. In the study, microstructures were observed using optical and electron microscopes. Good appearance and uniform structure and typical dendrite structure were observed in welding joint. The micro-hardness tester and Electronic Universal stretcher were used to measure the mechanical properties of the weldments and base metals. HAZ near 1Cr13 hardness is up to peak value of 1150HV, the strength of weldments is nearly same as austenite stainless steel. In addition, Through seawater immersion test, polarization curves and AC impedance spectroscopy of the weldments and base metals are obtained. It was found that corrosion resistance at welding joint lies between 1C13 and 1Cr18Ni9Ti.

关键词: BaTiO3-based ceramics, Bi2O3, Dielectric properties, X8R

Abstract:

The purpose of this study is to discuss the microstructure and properties variation of the weld metal in the dissimilar stainless steels during the argon tungsten-arc welding process. Because of the existence of different materials and chemistry variation within welds, properties, such as tensile and fracture properties and so on, are expected to show spatial variation. In the study, microstructures were observed by optical and electron microscopy. Good appearance and uniform structure and typical dendrite structure were observed in welding joint. The micro-hardness tester and electronic universal stretcher were used to measure the mechanical properties of the weldments and base metals. The heat affected zone (HAZ) near 1Cr13 hardness is up to peak value of 1150 HV, the strength of weldments is nearly same as austenite stainless steel. In addition,
through seawater immersion test, polarization curves and AC impedance spectroscopy of the weldments and base metals are obtained. It was found that corrosion resistance at welding joint lies between 1C13 and 1Cr18Ni9Ti.

Key words: BaTiO3-based ceramics, Bi2O3, Dielectric properties, X8R