Improving the intergranular corrosion resistance of 304 stainless steel by grain boundary network control

Hu, Chen; Xia, Shuang; Li, Hui; Liu, Tingguang; Zhou, Bangxin; Chen, Wenjue; Wang, Ning

doi:10.1016/j.corsci.2011.02.005

Cited by 213 publications

(90 citation statements)

References 25 publications

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“…However, the investigations on the GBCD optimization prohibiting the IGC are mainly focused on some conventional ASSs, such as 304 ASS and 316 ASS, in which IGC is induced by the precipitation of carbides [22,23,[26][27][28][29]. So far, there are few reports on the GBE applied for HNASS to prohibit the IGC by the precipitation of nitride.…”

Section: Introductionmentioning

confidence: 97%

“…GBE has been widely applied as a new method to solve the problems of GB failure [20,21], especially IGC, in recent years [22][23][24][25][26][27][28][29]. However, the investigations on the GBCD optimization prohibiting the IGC are mainly focused on some conventional ASSs, such as 304 ASS and 316 ASS, in which IGC is induced by the precipitation of carbides [22,23,[26][27][28][29].…”

Section: Introductionmentioning

confidence: 98%

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Improving intergranular corrosion resistance in a nickel-free and manganese-bearing high-nitrogen austenitic stainless steel through grain boundary character distribution optimization

et al. 2016

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

Improving intergranular corrosion resistance in a nickel-free and manganese-bearing high-nitrogen austenitic stainless steel through grain boundary character distribution optimization

et al. 2016

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“…As a result, the GBCD is believed to play a crucial role in the IGSCC [25] and corrosion and this is the root cause why many attempts have been done to optimize it by grain boundary engineering (GBE) [26,27]. Among these three types of grain boundaries (LAB, CSL and RGB), LAB and CSL boundaries are often considered to be the ''special'' boundaries due to their lower grain boundary energies and higher resistance to corrosion and IGSCC [28].…”

Section: Effect Of Microstructure On the Scc Behavior Of 316l Hazmentioning

confidence: 99%

Microstructure, Residual Strain and Stress Corrosion Cracking Behavior in 316L Heat-Affected Zone

Ming

Zhang

Xiu

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

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Austenitic stainless steels are usually chosen to make many components of nuclear power plants (NPPs). However, their microstructure in the heat-affected zone (HAZ) will change during the welding process. Some failures of the weld joints, mainly stress corrosion cracking (SCC), have been found to be located in the HAZ. In this research, the microstructure, micro-hardness, residual strain and SCC behavior at different locations of the 316L HAZ cut from a safeend dissimilar metal weld joint were studied. However, traditional optical microscope observation could not find any microstructural difference between the HAZ and the base metal, higher residual strain and micro-hardness, and higher fraction of random high-angle grain boundaries were found in the HAZ than in the base metal when studied by using electron back-scattering diffraction scanning and micro-hardness test. What's more, the residual strain, the microhardness and the fraction of random grain boundaries decreased, while the fraction of coincidence site lattice grain boundaries increased with increasing the distance from the fusion boundary in 316L HAZ. Creviced bent beam test was applied to evaluate the SCC susceptibility at different locations of 316L HAZ and base metal. It was found that the HAZ had higher SCC susceptibility than the base metal and SCC resistance increased when increasing the distance from the fusion boundary in 316L HAZ.

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“…Positive influence has been reported, for example, on fatigue crack propagation [9], creep resistance [10,11], hydrogen embrittlement [12], and most commonly on sensitization resistance [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…The application of GBE on 304 and 316 austenitic stainless steels has been widely studied [9,10,[13][14][15][16][17][18][19][20][21][22][23][24][25], but not on other grades of austenitic stainless steels. The objective of this study was to assess applicability of GBE on metastable low-nickel chromium-manganese austenitic stainless steels and on metastable chromium-nickel austenitic stainless steels.…”

Section: Introductionmentioning

confidence: 99%

Grain boundary engineering of metastable 204Cu, 301, and 301LN austenitic stainless steels to improve their sensitization resistance

Forsström

Talonen

Saukkonen

et al. 2014

Materials & Corrosion

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Grain boundary engineering (GBE) of 304 and 316 austenitic stainless steels has been widely researched but studies on other grades of austenitic stainless steels are less common. In this study, application of GBE on metastable austenitic stainless steels 204Cu, 301, and 301LN was assessed. Thermomechanical processing parameters were obtained for each of the tested steel grades by varying cold rolling reduction and annealing temperature, and analyzing the acquired grain boundary character distributions (GBCD) in scanning electron microscope (SEM) with electron backscatter diffraction (EBSD). A high fraction of about 80% low-S CSL boundaries was attained in all of the tested steels. Effect of the GBE-treatments on sensitization and intergranular corrosion properties was studied with Streicher and DL-EPR tests. GBE-treating was found to beneficially decrease the rate of intergranular corrosion and sensitization in 204Cu and 301 steels, but in low-carbon 301LN steel no improvement was observed.

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Improving the intergranular corrosion resistance of 304 stainless steel by grain boundary network control

Cited by 213 publications

References 25 publications

Improving intergranular corrosion resistance in a nickel-free and manganese-bearing high-nitrogen austenitic stainless steel through grain boundary character distribution optimization

Improving intergranular corrosion resistance in a nickel-free and manganese-bearing high-nitrogen austenitic stainless steel through grain boundary character distribution optimization

Microstructure, Residual Strain and Stress Corrosion Cracking Behavior in 316L Heat-Affected Zone

Grain boundary engineering of metastable 204Cu, 301, and 301LN austenitic stainless steels to improve their sensitization resistance

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