成果報告書詳細
管理番号20140000000088
タイトル*平成25年度中間年報 水素利用技術研究開発事業 燃料電池自動車及び水素供給インフラの国内規制適正化、国際基準調和・国際標準化に関する研究開発 燃料電池自動車及び水素ステーション関連機器向け使用可能鋼材の拡大に関する研究開発(委託先名:独立行政法人物質・材料研究機構)
公開日2014/5/2
報告書年度2013 - 2013
委託先名独立行政法人物質・材料研究機構
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約title:Research and Development on Hydrogen Utilization Technology

Research and Development on the Adjustment of Domestic Regulations, International Standard Harmonization and International Standardization for Fuel Cell Vehicles and Hydrogen Supply Infrastructure

Research and Development on the Expansion of Utilizable Steel for Fuel Cell Vehicles and Hydrogen Stations

Subject 2-3 Research on Material Properties under Cryogenic to Higher Temperatures and Gas Environment

Sumamary of FY2013 from FY2013 to FY 2017

Using a simple testing method for mechanical properties in high-pressure hydrogen gas environments, the effects of hydrogen environment embrittlement (HEE) on tensile properties of commercial SCM435 at 11.5 MPa at room temperature were evaluated. The crosshead-speed during tensile test was 3.6 mm/h. The effect of HEE is evaluated by the ratio of reduction of area (relative reduction of area) obtained in tensile tests using the specimen filled in hydrogen gas to that obtained in helium gas; the ratio of 1.0 means no effect of hydrogen and the ratio becomes smaller when the effect of hydrogen increases. An apparatus for high pressure gas change during tensile tests from hydrogen to helium gas or the reverse direction was developed. Elongation and reduction of area were reduced in the hydrogen environment and the relative reduction of area was 0.73, which means that the effect of HEE on tensile properties was clear in the plastic deformation region. The effects of HEE on tensile properties were decreased after the gas change from hydrogen to helium.
The effectiveness of the gas change during tensile tests for the study on HEE was proved this year and various kinds of testing conditions for tensile tests willbe carried out in following years.
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