Mechanical Properties of High Nitrogen - High Strength Stainless Steels in High Pressure Gaseous Hydrogen Environment

2013 ◽  
Author(s):  
Jun Nakamura ◽  
Tomohiko Omura ◽  
Yusaku Tomio ◽  
Hiroyuki Hirata ◽  
Masaaki Terunuma ◽  
...  
Keyword(s):  
High Pressure ◽  
Hydrogen Embrittlement ◽  
Stainless Steels ◽  
High Strength ◽  
Hydrogen Gas ◽  
Gaseous Hydrogen ◽  
Fatigue Properties ◽  
Slow Strain Rate Test ◽  
Chemical Compositions ◽  
High Nitrogen

The susceptibility to hydrogen embrittlement and the fatigue properties of several high nitrogen stainless steels were evaluated by SSRT (Slow Strain Rate Test) and external fatigue test. The tensile properties were evaluated by SSRT in gaseous hydrogen pressurized up to 90MPa in the temperature range from −40 degree C to room temperature. Despite the increase of nitrogen content, high nitrogen stainless steels showed no degradation by hydrogen. The susceptibility to hydrogen embrittlement depended on the chemical compositions. Fatigue properties in high pressure gaseous hydrogen were evaluated by the external cyclic pressurization test using tubular specimens. In this test the tubular specimen was filled with high pressure hydrogen gas filled with hydrogen pressurized up to 90MPa, and the outside of the specimen was cyclically pressurized with water pressurized up to 90MPa. The difference of fatigue life between hydrogen and inert gas was extremely small. Susceptibility to hydrogen embrittlement was discussed based on stability of an austenitic structure.

Evaluation of Hydrogen Environment Embrittlement and Fatigue Properties of Stainless Steels in High Pressure Gaseous Hydrogen: Investigation of Materials Properties in High Pressure Gaseous Hydrogen—2

2007 ◽  
Author(s):  
Tomohiko Omura ◽  
Mitsuo Miyahara ◽  
Hiroyuki Semba ◽  
Masaaki Igarashi ◽  
Hiroyuki Hirata
Keyword(s):  
High Pressure ◽  
Aluminum Alloy ◽  
Fatigue Life ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Hydrogen Gas ◽  
Gaseous Hydrogen ◽  
Fatigue Properties ◽  
Chemical Compositions ◽  
Hydrogen Environment

Hydrogen environment embrittlement (HEE) susceptibility in high pressure gaseous hydrogen was investigated on 300 series austenitic stainless steels and A6061-T6 aluminum alloy. Tensile properties of these materials were evaluated by Slow Strain Rate Testing (SSRT) in gaseous hydrogen pressurized up to 90MPa (13053 psig) in the temperature range from −40 to 85 degrees C (−40 to 185 degrees F). HEE susceptibilities of austenitic stainless steels strongly depended upon the chemical compositions and testing temperatures. A6061-T6 aluminum alloy showed no degradation by hydrogen. Fatigue properties in high pressure gaseous hydrogen were evaluated by the external cyclic pressurization test using tubular specimens. The tubular specimen was filled with high pressure hydrogen gas, and the outside of the specimen was cyclically pressurized with water. Type 304 showed a decrease in the fatigue life in hydrogen gas, while as for type 316L and A6061-T6 the difference of the fatigue life between hydrogen and argon environments was small. HEE susceptibility of investigated materials was discussed based on the stability of an austenitic structure.

scholarly journals Hydrogen Embrittlement Properties of Stainless Steels in High Pressure Gaseous Hydrogen Environment

2006 ◽  
Vol 55 (4) ◽  
pp. 139-145 ◽  
Author(s):  
Tomohiko Omura ◽  
Kenji Kobayashi ◽  
Mitsuo Miyahara ◽  
Takeo Kudo
Keyword(s):  
High Pressure ◽  
Hydrogen Embrittlement ◽  
Stainless Steels ◽  
Gaseous Hydrogen ◽  
Hydrogen Environment

238 Tensile and Fatigue Properties of stainless Steels Exposed to High Pressure Gaseous Hydrogen Evaluated by Small Specimen

2007 ◽  
Vol 2007 (0) ◽  
pp. 145-146
Author(s):  
Jun NAKAMURA ◽  
Mitsuo MIYAHARA ◽  
Eisuke NAKAYAMA ◽  
Tomohiko OMURA ◽  
Hiroyuki SEMBA
Keyword(s):  
High Pressure ◽  
Stainless Steels ◽  
Gaseous Hydrogen ◽  
Fatigue Properties ◽  
Small Specimen

Tribological Characterization of Polymeric Sealing Materials in High Pressure Hydrogen Gas

2010 ◽  
Author(s):  
Yoshinori Sawae ◽  
Kanao Fukuda ◽  
Eiichi Miyakoshi ◽  
Shunichiro Doi ◽  
Hideki Watanabe ◽  
...  
Keyword(s):  
High Pressure ◽  
Stainless Steel ◽  
Wear Behavior ◽  
Hydrogen Gas ◽  
Gaseous Hydrogen ◽  
Surface Oxide Layer ◽  
Chemical Compositions ◽  
Hydrogen Environment ◽  
Sealing Materials ◽  
Pressure Hydrogen

Bearings and seals used in fuel cell vehicles and related hydrogen infrastructures are operating in pressurized gaseous hydrogen. However, there is a paucity of available data about the friction and wear behavior of materials in high pressure hydrogen gas. In this study, authors developed a pin-on-disk type apparatus enclosed in a high pressure vessel and characterized tribological behavior of polymeric sealing materials, such as polytetrafluoroethylene (PTFE) based composites, in gaseous hydrogen pressurized up to 40 MPa. As a result, the friction coefficient between graphite filled PTFE and austenitic stainless steel in 40 MPa hydrogen gas became lower compared with the friction in helium gas at the same pressure. The chemical composition of worn surfaces was analyzed by using X-ray photoelectron spectrometer (XPS) after the wear test. Results of the chemical analysis indicated that there were several differences in chemical compositions of polymer transfer film formed on the stainless disk surface between high pressure hydrogen environment and high pressure helium environment. In addition, the reduction of surface oxide layer of stainless steel was more significant in high pressure hydrogen gas. These particular effects of the pressurized hydrogen gas on the chemical condition of sliding surfaces might be responsible for the tribological characteristics in the high pressure hydrogen environment.

scholarly journals Hydrogen Embrittlement of Steels in High Pressure H2 Gas and Acidified H2S-saturated Aqueous Brine Solution

2021 ◽  
Author(s):  
Anton Trautmann ◽  
Gregor Mori ◽  
Bernd Loder
Keyword(s):  
Hydrogen Embrittlement ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
High Strength ◽  
Hydrogen Uptake ◽  
Constant Load ◽  
Carbon Steels ◽  
Hydrogen Gas ◽  
Gas Reservoir ◽  
Load Tests

AbstractMicrobiological methanation is planned in an underground natural gas reservoir. For this purpose, hydrogen is stored, which can lead to hydrogen embrittlement of steels. To simulate these field conditions, autoclave tests were performed to clarify the amount of absorbed hydrogen and to test whether this content leads to failure of the steels. Constant load tests and immersion tests with subsequent hydrogen analyses were performed. Tests under constant load have shown that no cracks occur due to hydrogen pressures up to 100 bar and temperatures at 25 °C and 80 °C. In these conditions, the carbon steels absorb a maximum of 0.54 ppm hydrogen, which is well below the embrittlement limit. Austenitic stainless steels absorb much more hydrogen, but these steels also have a higher resistance to hydrogen embrittlement. In H2S saturated solutions, the hydrogen uptake is ten times higher compared to hydrogen gas, which has caused fractures of several steels (high strength carbon steels, Super 13Cr, and Duplex stainless steel 2205).

GS0506 Influencing Factors on Fatigue Properties of Stainless Steels in High Pressure Gaseous Hydrogen

2008 ◽  
Vol 2008 (0) ◽  
pp. _GS0506-1_-_GS0506-2_
Author(s):  
Jun NAKAMURA ◽  
Mitsuo MIYAHARA ◽  
Tomohiko OMURA ◽  
Hiroyuki SEMBA ◽  
Kazuhiro OGAWA ◽  
...  
Keyword(s):  
High Pressure ◽  
Influencing Factors ◽  
Stainless Steels ◽  
Gaseous Hydrogen ◽  
Fatigue Properties

scholarly journals OS2105 SSRT Property of High Strength Austenitic Stainless Steels in High Pressure Hydrogen Gas

2013 ◽  
Vol 2013 (0) ◽  
pp. _OS2105-1_-_OS2105-2_
Author(s):  
Hisatake ITOGA ◽  
Takashi MATSUO ◽  
Hisao MATSUNAGA ◽  
Saburo MATSUOKA
Keyword(s):  
High Pressure ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
High Strength ◽  
Hydrogen Gas ◽  
Pressure Hydrogen
Sign in / Sign up

Export Citation Format

Share Document