Microstructure and corrosion resistance of stainless steel produced by bypass coupling twin-wire indirect arc additive manufacturing

被引：9
|
作者：
Wu, Dongting [1 ]
An, Qi [2 ]
Du, Fuxin [3 ]
Matsuda, Kenji [4 ]
Tang, Yingwen [5 ]
Zou, Yong [6 ]
机构：
[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China
[3] Shandong Univ, Sch Mech Engn, Jinan 250061, Peoples R China
[4] Univ Toyama, Dept Mat Design & Engn MaDE, Toyama 9308555, Japan
[5] Chinese Petr Soc, Beijing 100724, Peoples R China
[6] Shandong Univ, Shandong Engn & Technol Res Ctr Modern Welding, Jinan 250061, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2022年 / 119卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
Additive manufacturing; Bypass coupling twin-wire indirect arc welding; Droplet transfer; Intergranular corrosion resistance; Pitting corrosion resistance; RESIDUAL-STRESS; WAAM;
D O I：
10.1007/s00170-021-08343-1
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This study investigates the application of bypass coupling twin-wire indirect arc welding (BC-TWIAW) in arc additive manufacturing of 18-8 stainless steel. It is found that the droplet transfer changed from short circuit mode to stable spray mode with the welding current rising. Droplet transfer was the most stable when welding current was 200 A. Compared with the conventional MIG welding arc additive manufacturing, the efficiency of BC-TWIAW additive manufacturing can be increased by more than 30%. Electrochemical tests show that the BC-TWIAW overlay has a lower reactivation rate, higher charge transfer resistance, and lower carrier concentration, indicating that the overlay has better resistance to intergranular corrosion and pitting corrosion.
引用
收藏
页码：2159 / 2172
页数：14
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