Modeling inelastic behavior of magnesium alloys during cyclic loading–unloading

Modeling twinning and detwinning behavior of Mg alloy ZK60A during monotonic and cyclic loading

“…A recently developed crystal plasticity model (denoted TDT, Wang et al, 2012aWang et al, , 2013aWang et al, , 2013b for describing twinning and detwinning behavior is employed to simulate the cyclic deformation behavior of extruded Mg alloy, ZK60A. The results of the modeling effort permit the following conclusions to be drawn:…”

“…In some cases, this process involves reverse motion of the boundaries which surround the original twin, denoted stage C in the presently employed Twinning-DeTwinning (TDT) model (Wang et al, 2012a(Wang et al, , 2013a(Wang et al, , 2013b. In other cases, it actually involves the nucleation of a new twin (with the parent orientation) within the original twin (denoted stage D in the TDT model, Wang et al, 2012aWang et al, , 2013aWang et al, , 2013b In the context of Mg alloys, it was the recent work of Cáceres et al (2003) which made the research community pick up this topic again. Cáceres et al (2003) were interested in the pseudoelastic behavior of cast alloy AZ91.…”

A phenomenological stress–strain model for wrought magnesium alloys under elastoplastic strain-controlled variable amplitude loading

“…[40][41][42][43][44][45][46]). Some of the models aim on deep drawing simulations for sheet metal forming (e.g.…”

“…[40,41]) were evaluated by means of loading paths within comparatively large strain ranges (>3%). Wang et al [44][45][46] developed crystal plasticity based constitutive models for hexagonal close packed crystals using AZ31 wrought semi-finished products for the verifications. The models described in [44,45] calculate stress-strain paths similar as in [40][41][42][43] with the advantage that they are more physics-based and are able to capture the texture evolution during cyclic loading.…”

“…Furthermore, the models in [44,45] are able to calculate a smooth transition between elastic and plastic deformation instead of a sharp bend as shown in [40,41]. In [46], the pseudoelastic behavior is investigated thoroughly by evaluating a crystal plasticity model. This model suitably captures pseudoelastic behavior during tensile loading and unloading.…”