Mechanical Properties and Corrosion Resistance of PM High Nitrogen Stainless Steel Consolidated by Hot Extrusion

1999 ◽  
Vol 318-320 ◽  
pp. 681-686
Author(s):  
T. Isomoto ◽  
H. Ikeda ◽  
T. Kouda ◽  
K. Ichii ◽  
Takayuki Oishi
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Hot Extrusion ◽  
High Nitrogen ◽  
Mechanical Properties And Corrosion ◽  
High Nitrogen Stainless Steel

Grain Boundary Engineering of High-Nitrogen Austenitic Stainless Steel

2007 ◽  
Vol 539-543 ◽  
pp. 4962-4967 ◽  
Author(s):  
Hiroyuki Kokawa ◽  
W.Z. Jin ◽  
Zhan Jie Wang ◽  
M. Michiuchi ◽  
Yutaka S. Sato ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Grain Boundary ◽  
Thermomechanical Processing ◽  
Grain Boundary Engineering ◽  
High Nitrogen ◽  
Mechanical Properties And Corrosion ◽  
Nitride Precipitation

Large amount of nitrogen addition into an austenitic stainless steel can improve the mechanical properties and corrosion resistance remarkably as far as the nitrogen is in solid solution. However, once the nitrogen precipitates as nitride, it results in deteriorations in the properties of the high nitrogen austenitic stain steel. During welding, a high nitrogen austenitic stainless steel is ready to precipitate rapidly immense amounts of chromium nitride in the heat affected zone (HAZ), as intergranular or cellular morphologies at or from grain boundaries into grain interiors. The nitride precipitation reduces seriously the local mechanical properties and corrosion resistance. The present authors have demonstrated that a thermomechanical-processing as grain boundary engineering (GBE) inhibited intergranular chromium carbide precipitation in the HAZ of a type 304 austenitic stainless steel during welding and improved the intergranular corrosion resistance drastically. In the present study, the thermomechanical-processing was applied to a high nitrogen austenitic stainless steel containing 1 mass% nitrogen to suppress the nitride precipitation at or from grain boundaries in the HAZ during welding by GBE. GBE increases the frequency of coincidence site lattice (CSL) boundaries in the material so as to improve the intergranular properties, because of strong resistance of CSL boundaries to intergranular deteriorations. The optimum parameters in the thermomechanical-processing brought a very high frequency of CSL boundaries in the high nitrogen austenitic stainless steel. The GBE suppressed the intergranular and cellular nitride precipitation in the HAZ of the high nitrogen austenitic stainless steel during welding.

ATI 201 HP

Alloy Digest ◽  
2021 ◽  
Vol 70 (3) ◽  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Mechanical Properties And Corrosion ◽  
Transportation Applications

Abstract ATI 201 HP is a 200-series, Cr-Mn-Ni austenitic stainless steel. It is comparable to the Cr-Ni stainless steel types 301, 304, and 304L in many respects, and can even provide some advantages over the 18-8 grades in certain applications. Because it possess a very desirable combination of economy plus good mechanical properties and corrosion resistance, it has been used in a wide variety of consumer and transportation applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1332. Producer or source: ATI.

Microstructure and Corrosion Resistance of Friction Stir Welded High Nitrogen Stainless Steel Joint

CORROSION ◽  
10.5006/2990 ◽  
2019 ◽  
Vol 75 (7) ◽  
pp. 790-798 ◽  
Author(s):  
H. Zhang ◽  
D. Wang ◽  
P. Xue ◽  
L.H. Wu ◽  
D.R. Ni ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Nitrogen ◽  
Friction Stir ◽  
Steel Joint ◽  
High Nitrogen Stainless Steel
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