Effects of the heat treatment on the microstructure and corrosion behavior of 316 L stainless steel manufactured by Laser Powder Bed Fusion

被引：40
作者：
Bedmar, J. [1 ]
Garcia-Rodriguez, S. [1 ]
Roldan, M. [2 ]
Torres, B. [1 ]
Rams, J. [1 ]
机构：
[1] Univ Rey Juan Carlos, Area Ciencia & Ingn Mat, ESCET, C Tulipan S-N, Madrid 28933, Spain
[2] CIEMAT, Technol Div, Natl Fus Lab, Avda Complutense 40, Madrid 28040, Spain
来源：
CORROSION SCIENCE | 2022年 / 209卷
关键词：
Stainless steel; SEM; EIS; Polarization; Laser Powder Bed Fusion; Heat treatment; MECHANICAL-PROPERTIES; PASSIVE FILM; MELTING SLM; FATIGUE; 304-STAINLESS-STEEL; RESISTANCE; SURFACE;
D O I：
10.1016/j.corsci.2022.110777
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Additively manufactured AISI 316 L stainless steel samples were heat treated at temperatures from 400 degrees C to 1100 degrees C, and the corrosion behavior in chloride environments was electrochemically studied. Heat treatments at 400 degrees C and 650 degrees C increased the grain size and the treatment at 1100 degrees C formed MnCr2O4 inclusions. Also, these postprocessing techniques reduce the hardness and increased the porosity. Heat treatment at 400 degrees C increased the polarization resistance and maintained the pitting corrosion mechanisms of the additively manufactured samples. Heat treatments at higher temperatures reduced the polarization resistance but changed the corrosion resistance mechanisms.
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页数：15
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