A5048596912- Hydrogen embrittlement and corrosion behaviors in metals
- Fatigue and fracture mechanics
- Material Properties and Failure Mechanisms
- Mechanical Failure Analysis and Simulation
- Non-Destructive Testing Techniques
- Nuclear Materials and Properties
- Metal and Thin Film Mechanics
- Welding Techniques and Residual Stresses
- Engineering Diagnostics and Reliability
- Microstructure and Mechanical Properties of Steels
- Combustion and Detonation Processes
- Corrosion Behavior and Inhibition
- Engineering Applied Research
- Force Microscopy Techniques and Applications
- Spacecraft and Cryogenic Technologies
- Advanced Surface Polishing Techniques
- Advanced materials and composites
- Nuclear Physics and Applications
- Offshore Engineering and Technologies
- High Temperature Alloys and Creep
- Microstructure and mechanical properties
- Coal and Coke Industries Research
- Rocket and propulsion systems research
- Thermodynamic and Structural Properties of Metals and Alloys
- Metal Alloys Wear and Properties
Innovative Materials Testing Technologies (United States)
2024
Sandia National Laboratories California
2006-2010
Office of Scientific and Technical Information
2009-2010
Sandia National Laboratories
2009-2010
National Technical Information Service
2009-2010
University of Illinois Urbana-Champaign
2010
UPMC McKeesport
2010
System Simulation (United Kingdom)
2009
Software (Spain)
2009
Washington State University
2002-2007
Gaseous hydrogen is an alternative to petroleum-based fuels, but it known significantly reduce the fatigue and fracture resistance of steels. Steels are commonly used for containment distribution gaseous hydrogen, albeit under conservative operating conditions (i.e., large safety factors) mitigate so-called embrittlement. Economical methods distributing (such as using existing pipeline infrastructure) necessary make fuel competitive with alternatives. The effects on steels, however, has not...
Abstract Applications requiring the containment and transportation of hydrogen gas at pressures greater than 70MPa are anticipated in evolving economy infrastructure. Since is known to alter mechanical properties materials, data needed guide selection materials for structural components. The objective this study characterize role yield strength, microstructural orientation, small concentrations ferrite on hydrogen-assisted fracture two austenitic stainless steels: 21Cr–6Ni–9Mn (21-6-9)...
Gaseous hydrogen is a convenient medium to store and transport energy. As existing petroleum-based platforms are electrified, such as with the growth of fuel cell systems, becoming an attractive which must be distributed, stored dispensed. Hydrogen used extensively in refining petroleum products, often distributed by pipeline. However, there remains need quantify mechanical properties low-cost steels gaseous relate measured performance variety microstructures that characterize steels. This...
Fatigue crack growth rates and rising displacement fracture thresholds have been measured for a 4130X steel in 45 MPa hydrogen gas. The ratio of minimum to maximum load (R-ratio) cyclic frequency was varied assess the effects these variables on fatigue rates. Decreasing increasing R were both found increase rate, however, are not independent each other. Changing from 0.1 Hz 1 reduced at = 0.5, but had no effect 0.1. When applied design life calculation pressure vessel consistent with typical...
The degradation of stress-controlled fatigue-life (stress-life) notched specimens was measured in the presence internal and external hydrogen for two strain-hardened austenitic stainless steels: 316L 21Cr-6Ni-9Mn. To assess sensitivity fatigue performance to various conditions tests were performed four environments: (1) air with no added hydrogen, (2) after pre-charging saturate steel gaseous at pressure (3)10 MPa (1.45 ksi), or (4) 103 (15 ksi). 21Cr-6Ni-9Mn steels indistinguishable tested...
Steel pressure vessels are commonly used for the transport of pressurized gases, including gaseous hydrogen. In majority cases, these cylinders experience relatively few cycles over their lifetime, perhaps as many 25 per year, and generally significantly less. For fueling applications, in fuel tanks on hydrogen-powered industrial trucks, hydrogen systems may thousands lifetime. Similarly, it can be anticipated that use tube trailers large-scale distribution will require lifetimes cycles....
The objective of this study was to measure the threshold stress-intensity factor (KTH) at crack arrest for commercial Cr-Mo and Ni-Cr-Mo pressure vessel steels exposed 100 MPa hydrogen gas using...
The objective of this work is to enable the safe design hydrogen pressure vessels by measuring fatigue crack growth rates ASME code-qualified steels in high-pressure gas. While a design-life calculation framework has recently been established for vessels, material property database does not exist support analysis. This study addresses such voids three heats SA-372 Grade J steel 100 MPa gas at two different load ratios (R). Results show that are similar all and only mild function R. Hydrogen...
Threshold stress intensity factors at crack arrest have been measured for three commercial low alloy pressure vessel steels, SA372 grade J, DOT 3AAX and 3T as well X100 line pipe steel using sustained load testing. Testing conditions were consistent with the recently published Article KD-10 from Section VIII, Division 3 of ASME Boiler Pressure Vessel Code. Measured threshold values these steels suggest a higher resistance to hydrogen-assisted fracture than previously expected, however some...