Influence of {10-12} extension twinning on the flow behavior of AZ31 Mg alloy

Jiang, Lan; Jonas, John J.; Luo, Alan A.; Sachdev, Anil K.; Godet, Stéphane

doi:10.1016/j.msea.2006.09.069

Cited by 304 publications

(136 citation statements)

References 12 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: 53%

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: 53%

Response of Ti microstructure in mechanical and laser forming processes

et al. 2018

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“…As a consequence, their interaction and reactions develop a characteristic locked 'quilted looking' twinning structure (Figure 1(a)) which affects subsequent twinning and de-twinning, causes twinning-induced hardening, and potentially results in crack initiation. [3][4][5][6][7] Jiang et al [8] and Yang and Zhang [9] reported that different twin variants and twin-twin intersections are associated with the deformation stage with a higher strain hardening rate in AZ31 Mg alloy which is subjected to compression along the extrusion direction. Ma et al [10] and Oppedal et al [11] found that multivariants are activated to accommodate large straining and the subsequent twin-twin interaction contributes to a significant strain hardening.…”

mentioning

confidence: 99%

Co-zone {1¯012} Twin Interaction in Magnesium Single Crystal

Wang

Jiang

et al. 2013

Materials Research Letters

103

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“…17) In AF, its basal planes and tensile direction have a non-zero included angle, which is more favorable for basal slip and f10 " 1 12g tension twins. 6,14,18) As mentioned above, the texture factor dominates the yield phenomena and affects the microstructure during tensile deformation as well.…”

Section: Discussionmentioning

confidence: 97%

“…In our recently study, 2) we found f10 " 1 12g tension twins in the tensile microstructure of FSPed AZ31 Mg alloy at room temperature, and their occurrence was suggested to be another influential factor. It is indicated that the appearance of f10 " 1 12g tension twin is beneficial to increasing the work hardening rate, 6,18) which results in the higher work hardening rate of AF at room temperature and 100 C. On the other hand, f10 " 1 11g compression twins have no similar effect on improving the work hardening rate. Thus it makes sense that the work hardening rate of AE drops rapidly.…”

Section: Discussionmentioning

confidence: 99%

Verification of Optimum Temperature on Tensile Ductility Improvement of Friction Stir Processed AZ31 at Warm Temperature Range up to 300°C

2011

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AZ31 Mg alloy in a friction stir processed condition was deformed in tension at temperatures ranging from room temperature to 300 C in comparison with the same alloy in an extruded condition. It was found that friction stir processed AZ31 possesses excellent ductility at a comparatively low thermal exposure temperature (100 C) and a significant difference of strain hardening behavior compared with as extruded one. These results show that the formability of friction stir processed specimens is better than that of as extruded samples due to the differences in texture and microstructural features. In order to confirm these findings, the present study conducted tensile tests from room temperature to 300 C and verified the improvement in ductility. The effect of exposure temperature on formability will be discussed as well.

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Influence of {10-12} extension twinning on the flow behavior of AZ31 Mg alloy

Cited by 304 publications

References 12 publications

Response of Ti microstructure in mechanical and laser forming processes

Response of Ti microstructure in mechanical and laser forming processes

Co-zone {1¯012} Twin Interaction in Magnesium Single Crystal

Verification of Optimum Temperature on Tensile Ductility Improvement of Friction Stir Processed AZ31 at Warm Temperature Range up to 300°C

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Influence of {10-12} extension twinning on the flow behavior of AZ31 Mg alloy

Cited by 304 publications

References 12 publications

Response of Ti microstructure in mechanical and laser forming processes

Response of Ti microstructure in mechanical and laser forming processes

Co-zone {1¯012} Twin Interaction in Magnesium Single Crystal

Verification of Optimum Temperature on Tensile Ductility Improvement of Friction Stir Processed AZ31 at Warm Temperature Range up to 300&deg;C

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Verification of Optimum Temperature on Tensile Ductility Improvement of Friction Stir Processed AZ31 at Warm Temperature Range up to 300°C