High cycle fatigue behaviour of magnesium alloys

Fatigue strength dependence on the ultimate tensile strength and hardness in magnesium alloys

“…7a and b, respectively. The results show clearly that satisfactory agreement is obtained between the predicted fatigue strengths and the experimental data [10,[22][23][24][60][61][62][63][64][65][66][67][68][69] with the error bands of ±10% (R 2 % 0.966 for Eq. (3a) and R 2 % 0.953 for Eq.…”

“…The fatigue strength models developed in the previous section have been applied to other magnesium alloys including some NZK alloys (Mg-yNd-0.2Zn-1Zr alloys (both T4-and T6-treated conditions), Mg-3Nd-zZn-1Zr alloys (both T4-and T6-treated conditions), NZ30K 10 alloys under different aging treatment conditions [22]) and commercial magnesium alloys such as AZ91 [22,[60][61][62], AM-SC [19], GW103 [61,63], AM60 [64], and ZN11 [65] alloys. The models have also been tested with some wrought magnesium alloys such as GW103 (GW123) [10,61,63], AZ31 [61,66], AZ61 [61,67], AZ80 [61,68], and ZK60 [69] alloys.…”

“…3a: σ f = 0.44σ b Mg-y Nd-z Zn-x Zr-T4 alloys AM-SC1 [19] GW103 [61,63] AZ31B [61,66] AZ61 [61,67] AZ80 [61,68] ZE41 [61] HZ32 [61] ZK60 [69] Predicted Based on Eq. 3b: σ f = 0.35σ b Mg-yNd-zZn-xZr-T6 alloys NZ30K10under different aging treatment [22] GW103 and GW123[10,61,63 ] AZ91 [22,[60][61][62] AZ92 [61] ZN11 [65] AZ61 [61,67] AM50 and AM60 [61,64] Mg-y Nd-z Zn-x Zr-T4 GW103 [61] AM-SC1 and AZ80 [19,68] Mg-yNd-zZn-xZr-T6 GW103 [61,63] AZ91 [22] Numerous other data available (conventional and newly developed Mg alloys materials) [10,19,22,[60][61][62][63][64][65][66][67][68][69] are also included for comparison. sites from surface to the inner inclusions [28].…”

The Effect of Reversed Loading Conditions on the Mechanical Behaviour of Extruded Magnesium Alloy AZ31

“…The asymmetric activation of twinning in dierent grain size fractions therefore requires a more detailed analysis. If a compressive cycle segment is followed by a tensile cycle segment, a distinct change in the material behaviour is observed showing a ow behaviour which is typical for twin dominated deformation [4,5,10]. This behaviour has been basically correlated with untwinning during this tensile deformation segment.…”

Effect of surface treatments on the fatigue life of magnesium and its alloys for biomedical applications

“…The fatigue data are represented as W€ ohler's or SeN curves. The CFD approach has also been used to evaluate the fatigue life of magnesium alloys for biomedical purposes or others (Gu et al, 2010;Nascimento et al, 2010). When fatigue behavior is evaluated using this approach, the material strain level is concentrated in the elastic regime.…”