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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Bibliographic Details
Published in:Materials letters 2000-07, Vol.44 (5), p.265-268
Main Authors: Lü, Y.Z, Wang, Q.D, Ding, W.J, Zeng, X.Q, Zhu, Y.P
Format: Article
Language:English
Subjects:
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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Summary: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