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

The Evolution of Residual Stress and Microstructure in Shot Peened S30432 Austenitic Stainless Steel at High Temperatures

2013 ◽  
Vol 768-769 ◽  
pp. 557-563
Author(s):  
Ke Zhan ◽  
Chuan Hai Jiang ◽  
Henry Pan
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
High Temperatures ◽  
Exposure Time ◽  
Shot Peening ◽  
Thermal Relaxation ◽  
Domain Size ◽  
Line Profile Analysis ◽  
Relaxation Energy

The thermal relaxation behavior of residual stress and microstructure at high temperatures in S30432 austenitic stainless steel after shot peening was investigated by X-ray residual stress analyzer. The effects of exposure time and applied temperature on the residual stress and microstructure relaxation were particularly analyzed and discussed. A significant decrease of the residual stress values were observed in the first period of exposure time, followed by slowing down and then stabilization. It was also observed that a higher applied temperature produced greater relaxation. In terms of microstructure, the domain size and micro-strain were calculated by Voigt method, the results showed that the refined domain size and high micro-strain induced by shot peening were greatly relaxed at the first stage of annealing, then stabilized. With higher annealing temperature, the recrystallization behavior in the shot peened deformed layer was more obvious. Based on the results of line profile analysis, the recrystallization activation energy and micro-strain relaxation energy were calculated, respectively.

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.

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

scholarly journals Fatigue Damage Mechanism of AL6XN Austenitic Stainless Steel at High Temperatures

2020 ◽  
Vol 33 (6) ◽  
pp. 799-807 ◽  
Author(s):  
Yanyan Hong ◽  
Penglin Gao ◽  
Hongjia Li ◽  
Changsheng Zhang ◽  
Guangai Sun
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Fatigue Damage ◽  
High Temperatures ◽  
Damage Mechanism
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