Dissimilar welding between SAF 2507 stainless steel and Incoloy 825 Ni-based alloy: The role of microstructure on corrosion behavior of the weld metals

被引：59
作者：
Kangazian, Jalal [1 ]
Shamanian, Morteza [1 ]
Ashrafi, Ali [1 ]
机构：
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
来源：
JOURNAL OF MANUFACTURING PROCESSES | 2017年 / 29卷
关键词：
Stainless steel; Ni-based alloy; Corrosion; Surface characterization; Dissimilar welding; MECHANICAL-PROPERTIES; INCONEL; 625; RESISTANCE; EVOLUTION; JOINTS; OPTIMIZATION; TOUGHNESS; STRENGTH; PCGTAW;
D O I：
10.1016/j.jmapro.2017.08.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of the filler metal type, welding process and the welding pass number on the corrosion behavior of Incoloy 825 Ni-based alloy to SAF 2507 super duplex stainless steel weld zones were addressed utilizing scanning electron microscopy, cyclic potentiodynamic polarization and electrochemical impedance spectroscopy. The results detailed the formation of some secondary phases in the weld metals. The welds employing Ni-based filler wires revealed the highest general corrosion resistance, while super duplex stainless steel weld metals displayed the best pitting corrosion behavior. Pulsed current gas tungsten arc welding and super duplex stainless steel filler metal were recommended to obtain the optimum surface corrosion resistance. (C) 2017 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：376 / 388
页数：13
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