Thermodynamic control of H2-N2 bright annealing atmospheres to inhibit nitrogen uptake by stainless steel

1989 ◽  
Vol 7 (1) ◽  
pp. 27-33 ◽  
Author(s):  
John F. Kirner ◽  
Alejandro L. Cabrera
Keyword(s):  
Stainless Steel ◽  
Nitrogen Uptake ◽  
Thermodynamic Control ◽  
Bright Annealing

Oxidation Analysis of 304 Austenitic Stainless Steel Sheet after Intermediate Annealing

2011 ◽  
Vol 474-476 ◽  
pp. 376-380
Author(s):  
Fei Han ◽  
Gao Yong Lin ◽  
Zai Lin Wang ◽  
Da Shu Peng
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
High Temperature ◽  
Austenitic Stainless Steel ◽  
High Temperature Annealing ◽  
Intermediate Annealing ◽  
Heat Treatment Furnace ◽  
Treatment Furnace ◽  
304 Austenitic Stainless Steel ◽  
Bright Annealing

Intermediate annealing to stainless steel can eliminate the residual stress, and improve plasticity and ductility effectively, but oxidation after different annealing processes has considerable difference. In this research, three annealing processes, low temperature annealing with ordinary heat treatment furnace, high temperature annealing with ordinary heat treatment furnace and high temperature bright annealing, were used to gain insight into the mechanics of intermediate annealing. Specimens of 304 austenitic stainless steel sheets were adopted in the intermediate annealing experiments which pre-deformation was 15%. The specimens’ surface microstructure were observed by scanning electron microscope (SEM), and the specimen oxidation, which happened in the annealing process, were also analyzed. The results show that bright annealing must be adopted in high temperature annealing.

Prediction of Properties in Type 347 Austenitic Stainless Steel after Long-Term Service at High Temperatures

2007 ◽  
Vol 539-543 ◽  
pp. 4920-4925 ◽  
Author(s):  
Jan Olof Nilsson
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Austenitic Stainless Steel ◽  
Nitrogen Uptake ◽  
Σ Phase ◽  
Prediction Of Properties ◽  
Software Packages ◽  
Evolution Of Microstructure ◽  
Good Agreement

The evolution of microstructure during production and elevated temperature service of type 347 austenitic stainless steel in the temperature range 700-800°C was modelled using commercial software packages such as Thermo-Calc and DICTRA and characterized using various microscopical techniques. The growth and coarsening of niobium carbonitrides and σ- phase were modelled as well as nitrogen uptake. Good agreement between predictions and microstructural observations was found.

Effect of bright annealing on stainless steel 304 formability in tube hydroforming

2014 ◽  
Vol 73 (9-12) ◽  
pp. 1341-1349 ◽  
Author(s):  
Purit Thanakijkasem ◽  
Vitoon Uthaisangsuk ◽  
Atirat Pattarangkun ◽  
Sasawat Mahabunphachai
Keyword(s):  
Stainless Steel ◽  
Tube Hydroforming ◽  
Stainless Steel 304 ◽  
Bright Annealing

Inhibition of nitrogen uptake by SiO2 surface films formed on stainless steel during annealing in H2/N2 atmospheres

1988 ◽  
Vol 19 (12) ◽  
pp. 3045-3055 ◽  
Author(s):  
J. F. Kirner ◽  
M. R. Anewalt ◽  
E. J. Karwacki ◽  
A. L. Cabrera
Keyword(s):  
Stainless Steel ◽  
Nitrogen Uptake ◽  
Surface Films ◽  
Sio2 Surface

Nitrogen uptake of nickel free austenitic stainless steel powder during heat treatment-an XPS study

2014 ◽  
Vol 47 (3) ◽  
pp. 413-422 ◽  
Author(s):  
Anna Weddeling ◽  
Kathrin Lefor ◽  
Eduard Hryha ◽  
Stephan Huth ◽  
Lars Nyborg ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Nitrogen Uptake ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
Xps Study

Precipitation reactions caused by nitrogen uptake during service at high temperatures of a niobium stabilised austenitic stainless steel

2004 ◽  
Vol 52 (14) ◽  
pp. 4337-4350 ◽  
Author(s):  
J. Erneman ◽  
M. Schwind ◽  
P. Liu ◽  
J.-O. Nilsson ◽  
H.-O. Andrén ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
High Temperatures ◽  
Nitrogen Uptake ◽  
Precipitation Reactions

NiAl precipitation in Fe-12w/o Cr-5w/o Ni-4w/o Al

1983 ◽  
Vol 41 ◽  
pp. 202-203
Author(s):  
L.E. Murr ◽  
J.S. Dunning ◽  
S. Shankar
Keyword(s):  
Solid Solution ◽  
Stainless Steel ◽  
Stainless Steels ◽  
Alloy Composition ◽  
Chromium Content ◽  
Scale Up ◽  
Optical Metallography ◽  
Property Evaluation ◽  
310 Stainless Steel ◽  
Microstructural Studies

Aluminum additions to conventional 18Cr-8Ni austenitic stainless steel compositions impart excellent resistance to high sulfur environments. However, problems are typically encountered with aluminum additions above about 1% due to embrittlement caused by aluminum in solid solution and the precipitation of NiAl. Consequently, little use has been made of aluminum alloy additions to stainless steels for use in sulfur or H2S environments in the chemical industry, energy conversion or generation, and mineral processing, for example.A research program at the Albany Research Center has concentrated on the development of a wrought alloy composition with as low a chromium content as possible, with the idea of developing a low-chromium substitute for 310 stainless steel (25Cr-20Ni) which is often used in high-sulfur environments. On the basis of workability and microstructural studies involving optical metallography on 100g button ingots soaked at 700°C and air-cooled, a low-alloy composition Fe-12Cr-5Ni-4Al (in wt %) was selected for scale up and property evaluation.

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