|Statement||by B.A. Graville and others.|
|Contributions||British Welding Research Association.|
For a strain rate of 5×10 −3 s −1, the dislocation velocity was too high to allow hydrogen segregation to dislocations and hydrogen embrittlement disappeared. In this study, the same trends were observed. However, at a high strain rate of 1×10 −1 s −1, under which hydrogen transport by dislocations is negligible, HE still occurred. In Cited by: The hydrogen embrittlement susceptibility of SUS steel in high-pressure hydrogen (H2) gas at °C was studied using the slow strain rate testing (SSRT) in high-temperature and high-pressure. Influence of the Composition, Cold Work and Structure of Carbon and Low-Alloy Steels on their Susceptibility to Hydrogen Embrittlement Effects of Varying Temperature and Strain Rate on the Elongation and Reduction in Area of Hydrogenized Steels Influence of Hydrogen on the Tensile Strength and the Fracture Stress of Steel Book Edition: 1. The effects of hot stamping (HS) and tempering on the hydrogen embrittlement (HE) behavior of a low-carbon boron-alloyed steel were studied by using slow strain rate tensile (SSRT) tests on notched sheet specimens. It was found that an additional significant hydrogen desorption peak at round 65–80 °C appeared after hydrogen-charging, the corresponding hydrogen concentration (CHr) of the HS.
Hofmann and Rauls studied the effect of temperature on hydrogen environment embrittlement between − 90 and °C at 15 MPa pressure on cold-drawn and normalized CK22 which is a low carbon steel with % C [ 32 ]. The tensile strain rate was /min. No effect on the ultimate tensile strength was observed at any of the test temperatures. Effect of high Temperature Hydrogen on Titanium Base Alloys (Pages: ) Howard G. Nelson; Summary; PDF; Effect of Strain Rate on Hydrogen Embrittlement in Ni 3 Al (Pages: ) Hydrogen Embrittlement in Duplex Steel Tempered between °C and °C and Cathodically Charged at °C (Pages: ). hydrogen evolution rate from charged specimens of steel, in one case following cadmium plating . of hydrogen in nickel at room temperature is about 5 × 10 − m. 2. s. 1 . Fig. 1 shows that at ambient temperature, the diﬀusivity in nickel is orders of magnitude . The effect of shot peening (SP) on hydrogen embrittlement of high strength steel was investigated by electrochemical hydrogen charging, slow strain rate tensile tests, and hydrogen permeation tests. Microstructure observation, microhardness, and X-ray diffraction residual stress studies were also conducted on the steel. The results show that the shot peening specimens exhibit a higher.
Hydrogen embrittlement is shown to proceed through a previously unidentified mechanism. Upon ingress to the microstructure, hydrogen promotes the formation of low-energy dislocation nanostructures. These are characterized by cell patterns whose misorientation increases with strain, which concomitantly attracts further hydrogen up to a critical amount inducing failure. ing data, work was initiated to characterize the effect of hydrogen on PH stainless steels. This report presents the results of a detailed study investigating the influence of aging temperature, hydrogen charging level, and strain rate on the susceptibility of PH stainless steel heat-treated to a wide range of strength levels. Graville B A, Baker R G and Watkinson F: ‘Effect of temperature and strain rate on hydrogen embrittlement of steel’, British Welding Journal 14(6) June Humphries, M J, McLaughlin, J E and Pargeter, R J: ‘Toughness characteristics of hydrogen charged pressure vessel steels’, Int Conf on Interaction of Steels with Hydrogen in. A Study of the Effect of Voids on Hydrogen Diffusion Through Electroslag Refined nitrogen oxide paint strippers potential pressure procedure reaction room temperature sample shielding gas shown in Fig slow strain rate solution sour gas specifications stainless steels standard strain rate test stress ASTM Subcommittee F on Hydrogen 5/5(1).