Combined shear-compression tests were conducted to AZ31B magnesium alloy through shear-compression specimen (SCS) and the deformation response process is captured by digital image correlation technology. The mechanical behaviours and deformation characteristics of SCS with different loading angles are analysed in detailed. Results show that the strain path of SCS is sensitive to the loading angle. The deformation behaviour at initial stage exhibits proportional loading and related to the tangent loading angle which reveals the designability of SCS for mechanical testing with specific requirements.
The deformation responses of AZ31B magnesium alloy under complex forming process are investigated experimentally through using the specially designed loading device consists of two metal blocks with two symmetrical bevelled ends. Based on digital image correlation analysis, the deformation process of specimen is clarified and the typical deformation modes are proposed. Results show that compression dominate the deformation response of specimen with smaller loading angle, while shear deformation becomes the major mode when the loading angle large enough. And an empirical formula is established for quantitative description the relationship between strain path and loading angle.
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