|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||In Operando Nano- and Micro-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques
||Investigation of Deformation Twinning under Complex Stress States in a Rolled Magnesium Alloy
||Wei Wu, Chih-Pin Chuang, Yang Ren, Ke An
|On-Site Speaker (Planned)
In the current study, the specially designed dog-bone plate samples with semi-circular edge notches were used to generate the complex biaxial-stress states around the notch. The digital image correlation method was employed to examine the macroscopic strain distribution in a wrought magnesium alloy during real-time deformation. In situ synchrotron X-ray diffraction mappings around a notch during a loading-unloading sequence at selected stress levels were conducted to monitor the diffraction peak intensity evolution and internal strain of certain hkls. The evolution of various deformation twinning systems, including, extension twinning, contraction twinning, and double twinning, during in situ deformation was investigated at once in a bulk sample for the first time. The internal strain distribution of certain interested hkls around the notch was recorded, and was used to estimate the stress distribution in different groups of grains.
||Planned: A print-only volume