Corrosion Behavior of Aqua-Blasted and Laser-Engraved Type 316L Stainless Steel

被引：5
作者：
Krawczyk, B. [1 ]
Cook, P. [2 ]
Hobbs, J. [2 ]
Engelberg, D. L. [1 ]
机构：
[1] Univ Manchester, Sch Mat, Ctr Corros & Protect, Manchester M13 9PL, Lancs, England
[2] Sellafield Ltd, Seascale CA28 7PB, Cumbria, England
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2017年 / 26卷 / 12期
关键词：
aqua blasting; atmospheric corrosion; austenitic stainless steel; laser engraving; oxide film; stress depth profiles; CHEMICAL-COMPOSITION; PASSIVE FILMS; AISI; 304-STAINLESS-STEEL; MECHANICAL-PROPERTIES; RESIDUAL-STRESS; XPS SPECTRA; SURFACE; RESISTANCE; MICROSTRUCTURE; CRACKING;
D O I：
10.1007/s11665-017-3053-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of aqua blasting and laser engraving on surface microstructure development, residual stress and corrosion resistance of type 316L stainless steel has been investigated. Aqua blasting resulted in a deformed near-surface microstructure containing compressive residual stresses. Subsequent laser engraving produced a surface layer with tensile residual stresses reaching to a depth of 200 microns. Changes of surface roughness topography were accompanied by the development of a thick oxide/hydroxide film after laser engraving. The atmospheric corrosion behavior of all surfaces with MgCl2-laden droplets was compared to their electrochemical response in 1M NaCl and 0.7 M HCl aqueous solutions. The measured total volume loss after atmospheric corrosion testing was similar for all investigated surface conditions. Laser-engraved surface exhibited the smallest number of corrosion sites, but the largest mean corrosion depth.
引用
收藏
页码：6167 / 6181
页数：15
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