Influence of macro segregation on hydrogen environment embrittlement of SUS 316L stainless steel

Delayed Cracking of Metastable Austenitic Stainless Steels after Deep Drawing

“…Nickel also plays an important role in deformation processes that affect hydrogen-assisted fracture, as it promotes cross slip and reduces slip planarity. 9,14) Susceptibility of austenitic stainless steel to internal hydrogen embrittlement has been shown to be strongly dependent on the nickel content. 15) Dissolved hydrogen in stainless steels enhances dislocation mobility and slip planarity, leading to heterogeneously localized plastic strain and stress concentrations.…”

Effect of Surface Conditions and Specimen Composition on Hydrogen Permeation Behavior of Coated and Uncoated Steels during Wet and Dry Corrosion at a Constant Dew Point

“…1,2) To ensure reliability and safety in the practical use of high strength steels, a reduction in the susceptibility to hydrogen embrittlement has become an important issue and hydrogen embrittlement has attracted much attention recently. [3][4][5][6][7][8][9][10][11][12][13] Koyama et al investigated the effect of hydrogen embrittlement of a Fe-18Mn-0.6C austenitic steel (wt.%) by tensile tests with hydrogen charging at various current densities. They reported that the work hardening behavior was not affected by the hydrogen charging.…”

Internal Reversible Hydrogen Embrittlement of Austenitic Stainless Steels Based on Type 316 at Low Temperatures

“…22,23) Metastable austenitic stainless steels such as type 301, 304 and 316 stainless steels exhibit IRHE [5][6][7][8][9][10][11][12]15,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] as well as HGE 8,9,11,[16][17][18][19][20][21][39][40][41][42][43][44][45][46][47][48][49][50][51][52] due to the presence of straininduced α' martensite. 8,9,16,…”

“…4,6,10,11,[13][14][15]20,24,26,36,46,47,[49][50][51][52] Wayman and Smith 24) studied the IRHE of iron-nickel alloys containing 20 and 30% Ni and found that IRHE is severe at 293 K but less severe at 77 K for the alloy containing 20% Ni, while for the alloy containing 30% Ni, IRHE was observed at 293 K but not at 77 K. Caskey 11) studied the temperature dependence of IRHE for a wide variety of stainless steels including commercial and high-purity alloys and found that the IRHE of all alloys increases with decreasing temperature, reaches a maximum at temperatures between 200 and 300 © 2012 ISIJ K and decreases with further decreasing temperature. Buckley and Hardie 36) showed that the maximum IRHE of 18Cr-11Ni stainless steels occurs at 215 K and that no IRHE occurs at temperatures below 160 K. Our HGE studies 20,46,47) showed that the HGE of commercially available austenitic stainless steels also depends on the temperature and that the maximum HGE of SUS 304, 316 and 316LN stainless steels (as denoted by the Japanese Industrial Standard (JIS)) in hydrogen at 1 MPa occurs at around 200 K, whereas no HGE appears below 120 K. Our recent IRHE study 15) also showed that the IRHE of commercially available austenitic stainless steels depends on the temperature and that the maximum IRHE of SUS 304, 316 and 316LN stainless steels occurs at around 200 K, whereas no IRHE appears at 80 K. We attributed this temperature dependence to the change in rate-controlling process from the strain-induced α' martensitic transformation process at higher temperatures to a hydrogen diffusion process at lower temperatures.…”