Superalloyed, high-nitrogen austenitic stainless steels

2004 ◽  
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
High Nitrogen

scholarly journals Brittle-to-Ductile Transition in Nickel-Free Austenitic Stainless Steels with High Nitrogen

2012 ◽  
Vol 98 ◽  
pp. 237-244 ◽  
Author(s):  
Masaki Tanaka ◽  
Tatsuro Onomoto ◽  
Toshihiro Tsuchiyama ◽  
Kenji Higashida
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
High Nitrogen ◽  
Brittle To Ductile Transition

scholarly journals Brittle-to-ductile Transition in Nickel-free Austenitic Stainless Steels with High Nitrogen

2012 ◽  
Vol 52 (5) ◽  
pp. 915-921 ◽  
Author(s):  
Masaki Tanaka ◽  
Tatsuro Onomoto ◽  
Toshihiro Tsuchiyama ◽  
Kenji Higashida
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
High Nitrogen ◽  
Brittle To Ductile Transition

Effect of Solution Annealing on Microstructure and Mechanical Properties of MIM Fe-Cr-Mn-Mo-N Stainless Steels

2010 ◽  
Vol 129-131 ◽  
pp. 886-890
Author(s):  
Da Wei Cui
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Stainless Steels ◽  
Solution Treatment ◽  
Austenitic Stainless Steels ◽  
Solution Annealing ◽  
High Nitrogen ◽  
Solid Solution Treatment ◽  
Microstructure And Mechanical Properties ◽  
Dimple Fracture

The influence of solution annealing on the microstructure and mechanical properties of high nitrogen Fe-Cr-Mn-Mo-N austenitic stainless steels prepared by MIM was investigated. The results show that the solution treatment can improve the microstructure and properties of the stainless steels significantly. The sintered specimens before solution annealing consist of γ-austenite and embrittling intergranular Cr2N precipitates, showing a low mechanical property. After solid solution annealing, the specimens reveal a fully austenitic structure without any intergranular nitrides, whose tensile properties are much higher than those without solution annealing, which is attributed to the elimination of the nitride precipitation along the grain boundaries and the greater amount of nitrogen retained in solid solution. A mixed mode of intergranular and dimple fracture happen to the specimens before solid solution treatment, while a completely tough fracture of dimple happen to those after solid solution treatment.

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