Thermodynamic analysis of the oxidation of carbon and alloying elements in chromium-nickel stainless steels

1982 ◽  
Vol 24 (4) ◽  
pp. 277-282
Author(s):  
L. V. Bobukh ◽  
V. A. Tarasenko
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shuqi Zhang ◽  
Qing Wang ◽  
Rui Yang ◽  
Chuang Dong

AbstractThe phase-type of a stainless steel is generally predicted by equivalent equations in terms of a major austenitic (γ) or ferritic (α) stabilizer Ni or Cr. The present paper attempts to understand the equivalent methods in stainless steels via the slopes of the phase boundary lines separating γ and γ + α phase zones. The prevailing equivalent coefficients are well interpreted using the slope ratios of the alloying elements divided by that of Ni or Cr, after analyzing over one hundred common stainless steels. Different from traditional composition equivalents which evaluate γ stabilizers and α stabilizers separately; the new equivalent scheme provides a unified phase stabilizing parameter for all alloying elements in stainless steels. This parameter is defined as γ stabilizing efficiency. Its negative or positive sign indicates γ stabilizer or α stabilizer, and its value represents the stabilizing efficiency.


1969 ◽  
Vol 55 (9) ◽  
pp. 831-838
Author(s):  
Toshihiko SASAKURA ◽  
Tsuneo KUNOU ◽  
Kiichiro SHINJI

2005 ◽  
pp. 2295-2298
Author(s):  
Y.S. Kim ◽  
Y.R. Yoo ◽  
C.G. Sohn ◽  
Keun Taek Oh ◽  
Kyoung Nam Kim ◽  
...  

2007 ◽  
Vol 537-538 ◽  
pp. 297-302
Author(s):  
Tibor Berecz ◽  
Péter János Szabó

Duplex stainless steels are a famous group of the stainless steels. Duplex stainless steels consist of mainly austenitic and ferritic phases, which is resulted by high content of different alloying elements and low content of carbon. These alloying elements can effect a number of precipitations at high temperatures. The most important phase of these precipitation is the σ-phase, what cause rigidity and reduced resistance aganist the corrosion. Several orientation relationships have been determined between the austenitic, ferritic and σ-phase in duplex stainless steels. In this paper we tried to verify them by EBSD (electron backscatter diffraction).


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