Void Volume Swelling dependent on Grain Size in an Austenitic Stainless Steel

The effect of grain size in the range 72 to 190 μm and carbon content in the range 0.105–0.073 wt.% on the intergranular corrosion of the austenitic stainless steel 301 has been investigated. Grain boundary chromium depletion has been studied directly using energy dispersive X-ray spectroscopy combined with scanning transmission electron microscopy and indirectly using double loop electrochemical potentiokinetic reactivation tests. In addition, chromium depletion has been modelled using the CALPHAD Thermo-Calc software TC-DICTRA. It is shown that the degree of sensitization measured using the double loop electrochemical potentiokinetic reactivation tests can be successfully predicted with the aid of a depletion parameter based on the modelled chromium depletion profiles for heat treatment times covering both the sensitization and de-sensitization or self-healing. Additionally, along with intergranular M23C6 carbides, intragranular M23C6 and Cr2N nitrides that affect the available Cr for grain boundary carbide precipitation were also observed.

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Effects of grain size on the sheared surface in micropiercing of austenitic stainless steel SUS304

Manufacturing Review ◽

10.1051/mfreview/2015013 ◽

2015 ◽

Vol 2 ◽

pp. 9 ◽

Cited By ~ 3

Author(s):

Tomomi Shiratori ◽

Yohei Suzuki ◽

Shizuka Nakano ◽

Ming Yang ◽

Takafumi Komatsu

Keyword(s):

Grain Size ◽

Stainless Steel ◽

Austenitic Stainless Steel

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Effect of grain size on austenite stability and room temperature low cycle fatigue behaviour of solution annealed AISI 316LN austenitic stainless steel

Materials Science and Technology ◽

10.1179/174328407x179575 ◽

2007 ◽

Vol 23 (11) ◽

pp. 1278-1284 ◽

Cited By ~ 16

Author(s):

K. Basu ◽

M. Das ◽

D. Bhattacharjee ◽

P. C. Chakraborti

Keyword(s):

Grain Size ◽

Stainless Steel ◽

Austenitic Stainless Steel ◽

Room Temperature ◽

Low Cycle Fatigue ◽

Fatigue Behaviour ◽

Cycle Fatigue ◽

Austenite Stability

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Correlation between Zener-Hollomon Parameter and DRX Critical Parameters of a Fe-Cr-Ni Super Austenitic Stainless Steel during Hot Deformation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.977.129 ◽

2014 ◽

Vol 977 ◽

pp. 129-134 ◽

Cited By ~ 1

Author(s):

Chao Bei Hu ◽

Bao Feng Guo ◽

Yong Tao Zhang ◽

Miao Jin ◽

Guan Qiang Yang ◽

...

Keyword(s):

Grain Size ◽

Stainless Steel ◽

Chemical Composition ◽

Austenitic Stainless Steel ◽

Entire Range ◽

Critical Parameters ◽

Industrial Processes ◽

Hollomon Parameter ◽

Super Austenitic Stainless Steel ◽

Variation Trends

Calculation of the critical condition for the initiation of DRX is of considerable interest for the modeling of industrial processes but it strongly depends on the chemical composition of the material, the grain size prior to deformation, and the deformation conditions ( T and ε ). This paper was therefore to show an approach that allows for accurate but convenient identification of the occurrence of DRX. For a Fe-Cr-Ni super stainless steel, the results show that there is a linear relationship between σc and lnZ ( σc=457.26-12.52lnZ). In addition, within the entire range of temperature and strain rate studied, it can be found that the values of both σc and σp or εc and εp keep similar variation trends, respectively. Finally, it was found that the critical ratios of both σc/σp and εc/εp remain fairly constant (≈0.92 and ≈0.47, respectively).

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