Fatigue behavior and life prediction of cast magnesium alloys

作者: Zhenming Li , Qigui Wang , Alan A. Luo , Liming Peng , Peng Zhang

DOI: 10.1016/J.MSEA.2015.07.019

关键词:

摘要: Abstract Fatigue behavior of magnesium castings has been investigated with NZK (Mg–Nd–Zn–Zr) alloys and other including AZ91D, GW103, AM-SC. Multi-scale fatigue (MSF) life models have adapted to estimate lives the studied. Results indicate that failure few casting defects is dominated by crack initiation first within a grain close free surface then propagation in trans-granular mode through either twin boundaries T4 heat treatment condition or from persistent slip bands T6/T7-treated condition. The cast can be well predicted using multi-scale together characteristic microstructure constituent – sizes.

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