Development of Powder Metallurgy High Nitrogen Stainless Steel

Chun Jiang Kuang; H. Zhong; D. Chen; X. Kuang; Q. Li; Q. Hao

doi:10.4028/www.scientific.net/MSF.638-642.1811

Paper Titles

Preferred Orientation of Cu₂O Nano-/Micro-Protrusions Grown by Ar Ion Irradiation
p.1784

Effects of Nano / Meso Harmonic Microstructure on Mechanical Properties in Austenitic Stainless Steel Produced by MM / HRS Process
p.1790

A Study on the Optimization of Reduction-Diffusion Process for Synthesis of Sm₂Fe₁₇N_x Nanopowder
p.1796

Effect of Die Temperature on Mechanical Properties of Hot Pressed P/M Parts
p.1802

Development of Powder Metallurgy High Nitrogen Stainless Steel
p.1811

WC-8Co-2Al (wt%) Cemented Carbides Prepared by Mechanical Milling and Spark Plasma Sintering
p.1817

Mechanically Alloyed and Spark Plasma Sintered Aluminium/Precious Metal Oxide Composite Materials
p.1824

Comparison of Structure and Properties of Hard Coatings on Commercial Tool Materials Manufactured with the Pressureless Forming Method or Laser Treatment
p.1830

Cutting Mechanism of Resin Impregnated Sintered Iron
p.1836

HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Development of Powder Metallurgy High Nitrogen...

Development of Powder Metallurgy High Nitrogen Stainless Steel

Abstract:

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.