Effects of quenching agents, two-step aging and microalloying on tensile properties and stress corrosion cracking of Al-Zn-Mg-Cu alloys

Analysis of Hydrogen Embrittlement on Aluminum Alloys for Vehicle-Mounted Hydrogen Storage Tanks: A Review

“…A sample is slowly and uniformly stretched on a constant strain rate machine until it breaks. It is a kind of method where as time is going by, the stretch rate of the material is increasing, until the sample breaks [16]. The appearance of the sample is shown in Figure 8.…”

“…According to the ASTM A370 [52] standard, in this experiment, the sample was processed and stretched to reach the standard of a gauge length of 25.4 mm and a diameter of 3.8 mm (±0.1). During the slow strain rate test, an EIS measurement is performed every hour to track the aluminum film's response under dynamic deformation conditions [16].…”

“…It is widely accepted that hydrogen embrittlement (HE) has become a serious problem since high-strength steel became widely used [5,7,13,14]. With the widespread application of aluminum alloys, it's found that aluminum and its alloys also have a higher hydrogen content [15][16][17]. However, due to the wide application of aluminum alloys, when hydrogen embrittlement causes the failure of aluminum alloys, catastrophic accidents can occur.…”

“…The working principle of a typical hydrogen storage tank is shown in Figure 3. Due to the wide application of aluminum alloys, they are not only used in hydrogen vehicles to store liquid hydrogen, but also in the military industry and aerospace industry [16,32]. Apart from this, due to the wide sources of hydrogen, and under certain circumstances (such as the presence of chloride or humid air) that hydrogen itself does not necessarily exist, numerous conditions may cause hydrogen to enter the aluminum alloys [33].…”