Effect of heat treatment on strain hardening of ZK60 Mg alloy

Effect of Sc addition on the work-hardening behavior of ZK60 magnesium alloy

“…The results showed that the refinement of the grain size leads to a strong decrease in the work-hardening rate [27]. Afrin et al [20] and Chen et al [26] also reported that the reduction in the grain size causes the lower hardening capacity. The results of our study are in agreement with these findings.…”

“…That is the applied stress necessary to deform a material is proportional to the dislocation density inside the material [26]. Accordingly, the microstructural factors could affect dislocation accumulation inside grains, thus determine the work-hardening behavior in magnesium alloy.…”

Effect of Extrusion Temperature on the Microstructure and Mechanical Properties of Mg–5Al–2Ca Alloy

“…In stage I, the values of hardening rate in 623 and 673 K are higher than 573 K. The work hardening of a material after yielding is related to the dislocation strain field interaction. An increase in dislocation density with continuous plastic deformation is the reason for strain hardening in a metallic material, that is, dislocations themselves are obstacles to dislocation motion [32], as a result, leading to more dislocation accumulation. Therefore, the difference of work hardening behavior can be explained by the microstructure change during extrusion at the different temperatures.…”

Evolution Of Precipitate Morphology During Extrusion In Mg ZK60A Alloy

“…Recently, magnesium alloys have received great attention especially for the application of lightweight parts in the automotive and aerospace industries because of their excellent specific strength [1][2][3][4]. However, magnesium alloys currently have several drawbacks in properties that significantly limit the wide application in industries [5][6][7].…”