Microstructure and mechanical properties of duplex stainless steels sintered in different atmospheres

2011 ◽  
Vol 54 (3) ◽  
pp. 236-241 ◽  
Author(s):  
R Mariappan ◽  
S Kumaran ◽  
T Srinivasa Rao ◽  
S B Chandrasekar
Keyword(s):  
Mechanical Properties ◽  
Stainless Steels ◽  
Duplex Stainless Steels ◽  
Microstructure And Mechanical Properties

Hardening of Aged Duplex Stainless Steels by Spinodal Decomposition

2004 ◽  
Vol 10 (3) ◽  
pp. 349-354 ◽  
Author(s):  
F. Danoix ◽  
P. Auger ◽  
D. Blavette
Keyword(s):  
Mechanical Properties ◽  
Impact Toughness ◽  
Spinodal Decomposition ◽  
Stainless Steels ◽  
Aging Process ◽  
Atom Probe ◽  
Duplex Stainless Steels ◽  
Detailed Knowledge ◽  
Iron Chromium

Mechanical properties, such as hardness and impact toughness, of ferrite-containing stainless steels are greatly affected by long-term aging at intermediate temperatures. It is known that the α-α′ spinodal decomposition occurring in the iron–chromium-based ferrite is responsible for this aging susceptibility. This decomposition can be characterized unambiguously by atom probe analysis, allowing comparison both with the existing theories of spinodal decomposition and the evolution of some mechanical properties. It is then possible to predict the evolution of hardness of industrial components during service, based on the detailed knowledge of the involved aging process.

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