Details

Autor(en) / Beteiligte

• Cheng, J.C.
• Li, H.Y.
• Li, C.
• Xiao, X.H.
• Zhong, Z.Y.
• Lu, L.
• Luo, S.N.

Titel

Effects of second-phase boron particles on impact response of aluminum

Ist Teil von

• Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2020-08, Vol.793 (C), p.139805, Article 139805

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The influence of second-phase boron particles (up to 0.15 wt%) on impact response of aluminum is investigated under high strain rate gas gun loading. The Hugoniot elastic limit (∼0.11 GPa) shows a negligible dependence on boron particle content up to 0.15 wt%. The second-phase particles reduce considerably spall strength of aluminum, and such reduction is more pronounced at high boron content. Spall strength undergoes a slight decrease at high impact velocities. Scanning electron microscopy and synchrotron X-ray computed tomography analyses indicate a competition between microvoid nucleation and microvoid growth. The damage features and spall strength characteristics can be attributed to the weak particle–matrix interface.