Influence of solution temperature on fatigue behavior of AM-SC1 cast magnesium alloy

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

“…The increasing use of magnesium castings in structural applications has drawn considerable interest in their fatigue properties [3,[10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Like many other metal castings, magnesium castings generally demonstrate easy fatigue crack initiation in the presence of casting defects such as gas pores, oxide films and shrinkages at or below the casting surface [11][12][13][14][15][16][17].…”

“…The fatigue life of cast magnesium alloys is determined by the maximum flaw size in the stressed areas [13][14][15][16][17]. In addition to casting defects, the fatigue properties of cast magnesium alloys also depend on microstructure constituents including grain size, second-phase particles, solid solution matrix and precipitates, which are determined by alloy composition, casting and heat treatment conditions [18][19][20][21][22][23]. As an example, the effects of Zr (for grain refinement) and Nd addition (for solution strengthening or precipitation strengthening) as well as heat treatment conditions (T4-and T6-treated conditions) on the tensile and high cycle fatigue strengths of the Mg-3Nd-0.2Z n-xZr (abbrev.…”

Fatigue Behavior of the Rare Earth Rich EV31A Mg Alloy: Influence of Plasma Electrolytic Oxidation

“…It can be noted that the effect of surface roughness on the base alloy was negligible, since the difference in fatigue strength between the S0.8 and S0.3 samples was within the standard deviation (103 and 101 MPa, respectively). The investigated alloy displayed a fatigue behaviour comparable or even better than that of other rare earth rich sand cast magnesium alloys; in fact, a fatigue strength of 98 MPa was measured on the AM-SC1 alloy (Mg-Nd 1.7-Other RE 1.0-Zn 0.5 Zn-Zr 0.50 ) [42], while the NZ30K2 alloy (Mg-Nd 2.8-Zn 0.19-Zr 0.50) [12] showed a fatigue strength of 84 MPa (15% lower compared to that measured on the present alloy). It is also worth noting that the fatigue strength of the EV31A alloy used in the present study is comparable with that of the most common wrought magnesium alloy AZ31 [43].…”

Fatigue Behavior of the Rare Earth Rich EV31A Mg Alloy: Influence of Plasma Electrolytic Oxidation

“…The investigated alloy displayed a fatigue behaviour comparable or even better than that of other rare earth rich sand cast magnesium alloys; in fact, a fatigue strength of 98 MPa was measured on the AM-SC1 alloy (Mg -1.7wt% Nd -1.0wt% other RE -0.5wt% Zn -0.5wt% Zr) [42], while the NZ30K2 alloy (Mg-2.8wt% Nd-0.19wt% Zn 0-0.50 wt% Zr) [12] showed a fatigue strength of 84 MPa (15% lower compared to that measured on the present alloy). It is also worth noting that the fatigue strength of the EV31A alloy used in the present study is also comparable with that of the most common wrought magnesium alloy AZ31 [43].…”