Fatigue of as-extruded AZ61A magnesium alloy

Fatigue of Welded Magnesium Alloy Joints

“…13) Microscopic propagation of fatigue cracks at magnesium alloy is greatly influenced with crystallographic orientation of structures. Brittle striation patterns were also observed at the final stage of fatigue crack propagation toward main crack direction, 14) as in Fig. 9(c).…”

Fatigue Cracking Behaviors and Influence Factors of Cast Magnesium Alloys

“…11. The slope of linear curve is about 7.67 that it indicates that the fatigue crack growth rate can be quantitatively and effectively expressed by the term of 7.67 max  when the fatigue crack growth length is one. Therefore, synthetically considered the effect of fatigue crack growth length and applied stress level on the fatigue crack growth rate, the curve about fatigue crack propagation tests of cast AM50 alloy at RT can be plotted as shown in Fig.…”

“…Therefore, there are increasing interests in the fatigue tests combined with the high-resolution microscopic techniques, environmental influencing factors, and especially in understanding their fatigue crack initiation and propagation behaviors with process rationalization [2][3][4]. Subsequently experimental observations on cast magnesium alloys have accumulatively revealed that the dendrite cell size, pores, secondary phase particles, persistent slip bands and twinning in the dendrite cells considerably affect on the fatigue durability and fatigue cracking behavior or crack growth mechanism of dendritic magnesium alloys [5][6][7][8]. The quantitative estimation of small fatigue crack growth rate of cast magnesium alloys is whether simply and effectively to assist the reversed design of cast magnesium alloys or ceaselessly to improve the strength and toughness of cast magnesium alloys.…”

Surface Characteristics and High Cycle Fatigue Performance of Shot Peened Magnesium Alloy ZK60

“…However, in comparison to aluminum alloys and steels, the research results on fatigue properties of magnesium alloys are still limited. Some research has shown that the fatigue properties of magnesium alloys are poor [3,4], thus making it difficult to apply the alloys for load-bearing parts in automobiles. Therefore, the improvement of the fatigue properties of magnesium alloys becomes a vital research subject.…”