Distinct microstructural and mechanical responses of Ti-6321 alloy to gaseous and electrochemical hydrogen charging

Key Points

• Mechanical responses differ significantly between gaseous and electrochemical hydrogen charging.
• Increased hydrogen-induced brittleness was observed in the alloy after electrochemical charging forms.
• Assessment using microstructural analysis highlighted the variations in crystal structure and phase distribution.
• These findings suggest the need to optimize hydrogen charging methods to mitigate risks in titanium alloy applications.