Effect of cathodic hydrogen charging on mechanical properties of Al 8090

Journal Article · Fri Jan 22 00:00:00 EST 1999 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00472-2· OSTI ID:349878

Jang, W K; Kim, S S ^[1]; Shin, K S ^[2]

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1. Gyeongsang National Univ., Chinju (Korea, Republic of). Div. of Materials Science and Engineering
2. Seoul National Univ. (Korea, Republic of). Center for Advanced Aerospace Materials

It has been well established that precipitation hardened, high-strength Al alloys are often susceptible to external hydrogen embrittlement. Al 8090 has been developed to reduce the mechanical anisotropy and improve the toughness by introducing S{prime} (Al{sub 2}CuMg) precipitates. Recently, Chen et al. studied the effects of cathodic hydrogen charging on tensile properties of Al 8090 sheet, and observed that hydrogen embrittlement affects the tensile properties of Al 8090 significantly, suggesting that hydrogen embrittlement may play an important role in SCC of Al 8090. It has often been demonstrated that the presence of notch greatly alters the hydrogen-assisted mechanical behavior of metals. Therefore, the main objective of the present study was to examine the effects of cathodic hydrogen charging on tensile and fracture behaviors of Al 8090.

• OSTI ID: 349878
• Journal Information: Scripta Materialia, Vol. 40, Issue 4; Other Information: PBD: 22 Jan 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HYDROGEN EMBRITTLEMENT
TENSILE PROPERTIES
ALUMINIUM BASE ALLOYS
NOTCHES
ORIENTATION
FRACTURES