Surface modification of 2205 duplex stainless steel by low temperature salt bath nitrocarburizing at 430°C

2013 ◽  
Vol 271 ◽  
pp. 93-97 ◽  
Author(s):  
Runbo Huang ◽  
Jun Wang ◽  
Si Zhong ◽  
Mingxing Li ◽  
Ji Xiong ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Surface Modification ◽  
Low Temperature ◽  
Duplex Stainless Steel ◽  
Salt Bath ◽  
2205 Duplex Stainless Steel

Low-Temperature Nitridation of 2205 Duplex Stainless Steel

2019 ◽  
Vol 51 (2) ◽  
pp. 608-617 ◽  
Author(s):  
J. C. Dalton ◽  
F. Ernst ◽  
A. H. Heuer
Keyword(s):  
Stainless Steel ◽  
Low Temperature ◽  
Duplex Stainless Steel ◽  
2205 Duplex Stainless Steel

Phase Transformations During the Low-Temperature Nitriding of AISI 2205 Duplex Stainless Steel

2015 ◽  
Vol 46 (3) ◽  
pp. 1461-1470 ◽  
Author(s):  
Jing Yan ◽  
Tan Gu ◽  
Shaoyu Qiu ◽  
Jun Wang ◽  
Ji Xiong ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Low Temperature ◽  
Phase Transformations ◽  
Duplex Stainless Steel ◽  
2205 Duplex Stainless Steel

Formation of Expanded Austenite Using Hybrid Low Temperature Thermochemical Heat Treatment on 2205 Duplex Stainless Steel

2014 ◽  
Vol 970 ◽  
pp. 244-247 ◽  
Author(s):  
Mohd Shahriman Adenan ◽  
M.N. Berhan ◽  
Esa Haruman
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Low Temperature ◽  
Duplex Stainless Steel ◽  
High Hardness ◽  
Hybrid Layer ◽  
Cross Sectional ◽  
Carbon And Nitrogen ◽  
2205 Duplex Stainless Steel ◽  
Expanded Austenite

Surface modification on 2205 duplex stainless steel (DSS) was performed by low temperature thermochemical hybrid (nitrocarburizing) heat treatment at temperature of 450° C and at holding time of 30 hours. During the process, carbon and nitrogen elements were simultaneously introduced onto the surface of DSS with composition of 5%CH4 + 25% NH3 + 70% N2. Microstructural observations reveal the formation of thick diffusional hybrid layer on the surface of 2205 DSS with very high hardness at cross sectional area. Both carbon and nitrogen diffusions formed expanded austenite (γN/C) and expanded ferrite (αC), however precipitation of nitride (Cr2N) which also occurred at the layer may deteriorate the corrosion resistance of 2205 DSS. Further investigation is required based on the parameters used in the process to produced precipitation free hybrid layer.

Laser Surface Modification of Duplex Stainless Steel 2205 to Modify the Surface Roughness

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
Y. Arsyad ◽  
R. Linggam ◽  
MOINUDDIN MOHAMMED QUAZI ◽  
M.H. Aiman ◽  
M. Ishak ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Modification ◽  
Duplex Stainless Steel ◽  
Surface Topography ◽  
Laser Surface ◽  
Polished Surface ◽  
Average Roughness ◽  
Laser Surface Modification ◽  
2205 Duplex Stainless Steel

Laser surface modification is an emerging process that can produce texture on a work surface and effectively enhance surface topography while altering surface roughness. Laser surface modification is a sensitive process that depends on various laser processing parameters such as power, scanning speed, hatching distance. The significance of this work is to examine the influence of hatching distance on the surface characteristic of 2205 duplex stainless steel samples. The surface transformation and variation of the surface roughness properties of the materials were examined. The hatching distance was varied from 0.1 to 0.005 mm. Results indicate that, as the hatch spacing decreases, the overlap of laser track increases, thereby resulting in a decrease of surface roughness. Meanwhile, with the increase of hatch distance, the clear overlay tracks were transformed to irregular wavy surface. The best hatch distance parameter obtained was 100 μm that resulted in the highest roughness of 8.45 μm. Experimental results illustrate that, when the optimum hatch distance of 100 μm was adopted, the polished smooth surface of 2205 duplex stainless steel with initial average roughness value of 0.19 μm increased by 42 times of the polished surface roughness. A strong correlation between hatching distance and roughness was established in 2205 duplex stainless steel. High depth of the altered surface topography and increased roughness were linked to higher levels of hatching distance.

Evaluating the Hydrogen Embrittlement Susceptibility of Aged 2205 Duplex Stainless Steel Containing Brittle Sigma Phase

2021 ◽  
Author(s):  
Loyslene Rabelo Fernandes ◽  
Lisa Claeys ◽  
Margot Pinson ◽  
Tom Depover ◽  
Dagoberto Brandão Santos ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Hydrogen Embrittlement ◽  
Duplex Stainless Steel ◽  
Sigma Phase ◽  
2205 Duplex Stainless Steel
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