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

Microstructure of Friction-Stir-Welded High-Nitrogen Stainless Steel

2007 ◽  
pp. 3757-3762 ◽  
Author(s):  
S.H.C. Park ◽  
Yutaka S. Sato ◽  
Hiroyuki Kokawa ◽  
Kazutaka Okamoto ◽  
Satoshi Hirano ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Nitrogen ◽  
Friction Stir ◽  
High Nitrogen Stainless Steel

Development of Powder Metallurgy High Nitrogen Stainless Steel

2010 ◽  
Vol 638-642 ◽  
pp. 1811-1816 ◽  
Author(s):  
Chun Jiang Kuang ◽  
H. Zhong ◽  
D. Chen ◽  
X. Kuang ◽  
Q. Li ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Nitrogen Content ◽  
Stainless Steels ◽  
High Strength ◽  
Gas Atomization ◽  
High Nitrogen ◽  
Annealed State ◽  
Nitrogen Alloying ◽  
High Nitrogen Stainless Steel

Nitrogen alloying in steel may greatly increase the strength and corrosion resistance of the material. This paper introduced some research results of high nitrogen stainless steel (HNS) investigation via PM process. Nickel free high nitrogen stainless steels (17Cr12Mn2MoN) and superaustenitic high nitrogen stainless steels (28Cr6Mn2/6Mo10/20NiN) were investigated via gas atomization and HIP processes. Nitrogen alloying behavior during atomization and consolidation processes was investigated. Powders with nitrogen content up to 1% were manufactured by gas atomization process. Nickel free high nitrogen stainless steels with nitrogen up to 0.6% exhibits high strength and ductility at as-HIPed and solution annealed state, and superaustenitic HNS with nitrogen content up to 1% showed very high strength and good ductility at solution annealed state, with b at 1100 MPa, s at 810 MPa and elongation of 43%. PM HNS exhibited excellent corrosion resistance.

A review of progress on high nitrogen austenitic stainless-steel research

2021 ◽  
Vol 11 (12) ◽  
pp. 1901-1925
Author(s):  
Shuai Li ◽  
Chengsong Zhang ◽  
Jiping Lu ◽  
Ruiduo Chen ◽  
Dazhi Chen ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Research Progress ◽  
High Nitrogen ◽  
Friction Stir ◽  
The Past ◽  
Wide Range

High nitrogen austenitic stainless steels are commonly used in wide range of applications because of their excellent properties, attracting super attention over the past decades. Compared with other metal materials, high nitrogen austenitic stainless steel increases the nitrogen content under the premise that the structure is austenite, giving it excellent mechanical properties and corrosion resistance. Based on relevant documents from the past ten years, this article summarizes and compares three preparation methods for high nitrogen austenitic stainless steels, namely: powder nitriding, melt nitriding and bulk nitriding. They can be divided into six categories according to other differences as explained by the latest research progress on strengthening and toughening mechanism for high nitrogen austenitic stainless steels: composite structure strengthening, fine grain strengthening, precipitation strengthening and strain strengthening. This article also reviews the research progress on excellent properties of high nitrogen stainless steel, including strength, hardness and corrosion resistance. It further describes the emerging nickel-free high nitrogen austenitic stainless steels and its biocompatibility. Welding applications of high nitrogen austenitic stainless steels are also described from three aspects: friction stir welding, arc welding and brass solder. Finally, this article puts forward the development direction of high nitrogen austenitic stainless steels in the future.

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