TY - JOUR
T1 - High-strength copper-based alloy with excellent resistance to hydrogen embrittlement
AU - Yamabe, Junichiro
AU - Takagoshi, Daiki
AU - Matsunaga, Hisao
AU - Matsuoka, Saburo
AU - Ishikawa, Takahiro
AU - Ichigi, Takenori
N1 - Funding Information:
This work was partially supported by the New Energy and Industrial Technology Development Organization (NEDO), Hydrogen Utilization Technology (2013–2018). The authors gratefully acknowledge the support of the International Institute for Carbon-Neutral Energy Research ( I2CNER ), established by the World Premier International Research Center Initiative (WPI), MEXT, Japan.
PY - 2016/9/7
Y1 - 2016/9/7
N2 - 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.
AB - 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.
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U2 - 10.1016/j.ijhydene.2016.05.156
DO - 10.1016/j.ijhydene.2016.05.156
M3 - Article
AN - SCOPUS:84991670281
SN - 0360-3199
VL - 41
SP - 15089
EP - 15094
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 33
ER -
