Fracture behavior of AZ91 magnesium alloy

Optical microscopy and scanning electron microscopy (SEM) were used to examine the fracture behavior of AZ91 magnesium alloy ruptured by tensile and impact tests. AZ91 alloy generally revealed features of brittle fracture and cleavage is the principal fracture mode. The fracture behavior for tensile...

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Veröffentlicht in:	Materials letters 2000-07, Vol.44 (5), p.265-268
Hauptverfasser:	Lü, Y.Z, Wang, Q.D, Ding, W.J, Zeng, X.Q, Zhu, Y.P
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences AZ91 magnesium alloy Cleavage Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Fatigue, brittleness, fracture, and cracks Fatigue, corrosion fatigue, embrittlement, cracking, fracture and failure Fatigue, embrittlement, and fracture Fracture behavior Materials science Mechanical and acoustical properties of condensed matter Mechanical properties of solids Metals. Metallurgy Physics Treatment of materials and its effects on microstructure and properties
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Zusammenfassung:	Optical microscopy and scanning electron microscopy (SEM) were used to examine the fracture behavior of AZ91 magnesium alloy ruptured by tensile and impact tests. AZ91 alloy generally revealed features of brittle fracture and cleavage is the principal fracture mode. The fracture behavior for tensile test is different from that for impact test due to different load forms. The fracture morphologies are different in different areas of the impact specimen. The Mg/Mg 17Al 12 interface often acted as the crack initiation source.
ISSN:	0167-577X 1873-4979
DOI:	10.1016/S0167-577X(00)00041-0