High-strength copper-based alloy with excellent resistance to hydrogen embrittlement

Junichiro Yamabe, Daiki Takagoshi, Hisao Matsunaga, Saburo Matsuoka, Takahiro Ishikawa, Takenori Ichigi

研究成果: ジャーナルへの寄稿学術誌査読

14 被引用数 (Scopus)


High-pressure components are generally designed with safety factors based on the tensile strength (TS) of the material; accordingly, materials with higher TS permit designed components with thinner walls, which reduce the weight and cost of the parts. However, many high-strength metals are severely degraded by hydrogen. To this point, efforts to develop a high-strength metal with a TS far beyond 1000 MPa and excellent resistance to hydrogen embrittlement (HE) have failed. This study introduces a high-strength metal with an excellent HE resistance, composed of a precipitation-hardened copper-beryllium alloy with the TS of 1400 MPa. Slow strain rate tensile (SSRT) tests of both smooth and notched specimens were performed in 115-MPa hydrogen gas at room temperature (RT). The alloy had a relative reduction in area RRA ≈ 1 and a relative notch tensile strength RNTS ≈ 1, without degradation in either characteristic.

ジャーナルInternational Journal of Hydrogen Energy
出版ステータス出版済み - 9月 7 2016

!!!All Science Journal Classification (ASJC) codes

  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • 凝縮系物理学
  • エネルギー工学および電力技術


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