Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7951850 | Journal of Materials Science & Technology | 2018 | 16 Pages |
Abstract
The microstructure and properties of water-cooled and air-cooled friction stir welded (FSW) ultra-high strength high nitrogen stainless steel joints were comparatively studied. With additional rapid cooling by flowing water, the peak temperature and duration at elevated temperature during FSW were significantly reduced. Compared to those in the air-cooled joint, nugget zone with finer grains (900Â nm) and heat affected zone with higher dislocation density were successfully obtained in the water-cooled joint, leading to significantly improved mechanical properties. The wear of the welding tool was significantly reduced with water cooling, resulting in better corrosion resistance during the immersion corrosion test.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Chemistry
Authors
H. Zhang, D. Wang, P. Xue, L.H. Wu, D.R. Ni, B.L. Xiao, Z.Y. Ma,