Low cycle fatigue behavior of a semi-solid processed AM60B magnesium alloy

Cyclic Deformation Behavior of a Rare-Earth Containing Extruded Magnesium Alloy: Effect of Heat Treatment

“…[1] and [2] are summarized in Table II. It is seen that while the obtained fatigue parameters were well within the range in other fatigued Mg alloys reported in the literature, [10][11][12]78] the cyclic strain-hardening exponent n¢ of the GW103K alloy was lower than that of RE-free Mg alloys. [10][11][12]78] This corresponded well to the higher yield strength (Table I) and cyclic stabilization characteristics of these alloys (Figures 7 and 8).…”

“…It is seen that while the obtained fatigue parameters were well within the range in other fatigued Mg alloys reported in the literature, [10][11][12]78] the cyclic strain-hardening exponent n¢ of the GW103K alloy was lower than that of RE-free Mg alloys. [10][11][12]78] This corresponded well to the higher yield strength (Table I) and cyclic stabilization characteristics of these alloys (Figures 7 and 8). While the cyclic strain-hardening exponent (n¢) of T5 alloy was slightly lower than that of the as-extruded alloy, the cyclic strength coefficient (K¢) and fatigue strength coefficient (r 0 f ) of the T5 alloy were higher than those of the as-extruded alloy, which corresponded well to their monotonic yield strength (i.e., 332 MPa for the T5 sample vs 232 MPa for the asextruded sample).…”

“…[88] Yin et al [89] reported that randomly textured casting samples exhibited almost no yielding asymmetry. Likewise, Patel et al [78,90] also observed no yielding asymmetry in the super-vacuum die cast or semi-solid processed AM60B and AZ91D Mg alloys, which was in agreement with the results of GW103K alloy. As mentioned earlier in Section III-A, the present GW103K alloy showed relatively weak textures (Figure 4) due to the presence of RE-rich particles and smaller grain sizes (which resulted from the Zener-pinning effect) as compared to the RE-free Mg alloys (Figures 1 and 2).…”

Effect of twinning and detwinning on the spring-back and shift of neutral layer in AZ31 magnesium alloy sheets during V-bend

“…Hence, twinning must have an important effect on the shift of the neutral layer in magnesium alloys during bending. It is well known that detwinning occurs after inverse deformation [10,11] and accordingly, during bending, springback cannot be avoided and an inverse load will be induced, leading to the concurrent detwinning behavior. To the authors' knowledge, detwinning behavior during bending has not been researched so far.…”

Fatigue Analysis of Magnesium Alloys Components for Car Industry

“…This clearly suggests that scatter behavior of fatigue life would be mainly caused by the scatter of pore size [7]. Both low cycle fatigue [8] for AZ31, [9] for AZ 91 HP, AM 50 HP and AM 20 HP, Patel et al for AM60 [10], respectively high cycle fatigue [7,11] for AM60 approaches were employed for durability studies of Magnesium alloys. This paper presents the mechanical and fatigue properties of AM50 magnesium alloy, and a durability prediction for a steering wheel, based on material data obtained experimentally.…”