Dataset on Effect of Si content on microstructure and compressive properties of opencell Mg composite foams reinforced by in-situ Mg2Si compounds

Optical microscope (OM, MDJ-DM) and scanning electron microscopy (SEM, EVO-18 ZEISS and VEGA3 TESCAN) were utilized for observing the microstructure of the Mg foams. Energy-dispersive X-ray spectroscopy (EDS, Model Link-Isis and INCA Oxford) and X-ray diffraction (XRD, D/Max2500) were carried out to identify the chemical components and compositions of the foams. To check the fracture mechanism of the foams, the fracture surface of the foams was observed after the specimens were suffered the strain of about 0.3. In this investigation, the external fractured struts of the foams were used to observe the fracture morphology. Quasi-static compressive test was conducted to assess the compressive properties of the foam samples with an equivalent porosity of ~67% by using universal test machine with the strain ate of 10−3/s at room temperature. At least three samples for each chemical component were performed in the compressive test, and the average data was employed. The average data were used to draw the stress-strain curves.