Three-dimensional investigation of grain boundary–twin interactions in a Mg AZ31 alloy by electron backscatter diffraction and continuum modeling

Fernández, Ana; Jérusalem, Antoine; Gutiérrez-Urrutia, I.; Pérez‐Prado, M.T.

doi:10.1016/j.actamat.2013.09.005

Cited by 106 publications

(60 citation statements)

References 59 publications

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“…The quilted structure forms through the blocking and propagation of the above-mentioned active twinning systems. These features have been widely observed within orthotropic materials [21][22][23][24][25][26][27][28][29]. Twin broadening was observed from the top surface to a depth of * 400 lm.…”

Section: Resultsmentioning

confidence: 78%

Response of Ti microstructure in mechanical and laser forming processes

et al. 2018

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Microstructural deformation mechanisms present during three different forming processes in commercially pure Ti were analysed. Room temperature mechanical forming, laser beam forming and a combination of these two processes were applied to thick metal plates in order to achieve the same final shape. An electron backscatter diffraction technique was used to study the plate microstructure before and after applying the forming processes. Substantial differences among the main deformation mechanisms were clearly detected. In pure mechanical forming at room temperature, mechanical twinning predominates in both compression and tensile areas. A dislocation slip mechanism inside the compression and tensile area is characteristic of the pure laser forming process. Forming processes which subsequently combine the laser and mechanical approaches result in a combination of twinning and dislocation mechanisms. The Schmid factor at an individual grain level, the local temperature and the strain rate are factors that determine which deformation mechanism will prevail at the microscopic level. The final microstructures obtained after the different forming processes were applied are discussed from the point of view of their influence on the performance of the resulting formed product. The observations suggest that phase transformation in Ti is an additional microstructural factor that has to be considered during laser forming.

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Section: Resultsmentioning

confidence: 78%

Response of Ti microstructure in mechanical and laser forming processes

et al. 2018

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“…The quilted-looking twin structure forms through the propagation and blocking of multiple twin variants. This structure has been widely observed in materials with orthotropic [42][43][44], tetragonal [45] cubic [46,47], and hcp [35][36][37][38][39][40][48][49][50][51] crystal structures. Fig.…”

Section: Experimental Observation Of Twin-twin Structuresmentioning

confidence: 96%

Twin–twin interactions in magnesium

et al. 2014

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“…Twinning takes place along bands as a response to the applied stress, first in grains with high SF. Subsequently, GB stresses emerging from twin-GB interactions are released by further twinning in grains with lower SF [1,5,47] and by slip. Fig.…”

Section: Twinning To Slip Transition With Decreasing Grain Sizementioning

confidence: 99%