scholarly journals Fatigue Properties and Degradation Mechanism for Stainless and High Strength Steels in High Pressure Gaseous Hydrogen Environment

2011 ◽  
Vol 60 (12) ◽  
pp. 1123-1129 ◽  
Author(s):  
Jun NAKAMURA ◽  
Mitsuo MIYAHARA ◽  
Tomohiko OMURA ◽  
Hiroyuki SEMBA ◽  
Masayuki WAKITA
Keyword(s):  
High Pressure ◽  
Degradation Mechanism ◽  
High Strength Steels ◽  
High Strength ◽  
Gaseous Hydrogen ◽  
Fatigue Properties ◽  
Hydrogen Environment

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.

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.

scholarly journals Degradation of fatigue properties in high pressure gaseous hydrogen environment evaluated by cyclic pressurization tests

2010 ◽  
Vol 2 (1) ◽  
pp. 1235-1241 ◽  
Author(s):  
Jun Nakamura ◽  
Mitsuo Miyahara ◽  
Tomohiko Omura ◽  
Hiroyuki Semba ◽  
Masayuki Wakita ◽  
...  
Keyword(s):  
High Pressure ◽  
Gaseous Hydrogen ◽  
Fatigue Properties ◽  
Hydrogen Environment

Weldability of High-Strength Stainless Steel for High Pressure Gaseous Hydrogen Environments

2017 ◽  
Vol 86 (8) ◽  
pp. 555-558
Author(s):  
Kana JOTOKU ◽  
Jun NAKAMURA ◽  
Takahiro OSUKI ◽  
Hiroyuki HIRATA
Keyword(s):  
High Pressure ◽  
Stainless Steel ◽  
High Strength ◽  
Gaseous Hydrogen

scholarly journals Gigacycle Fatigue Properties of Hydrogen Charged High Strength Steels

2013 ◽  
Vol 99 (7) ◽  
pp. 494-501 ◽  
Author(s):  
Hisashi Hirukawa ◽  
Yoshiyuki Furuya
Keyword(s):  
High Strength Steels ◽  
High Strength ◽  
Fatigue Properties
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