J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (11): 2423-2429.DOI: 10.1016/j.jmst.2019.06.008
• Orginal Article • Next Articles
Baojie Wanga, Daokui Xubd*(), Liyuan Shengc**(), Enhou Hanbd, Jie Suna
Received:
2019-05-17
Revised:
2019-06-11
Accepted:
2019-06-13
Online:
2019-11-05
Published:
2019-10-21
Contact:
Xu Daokui,Sheng Liyuan
Baojie Wang, Daokui Xu, Liyuan Sheng, Enhou Han, Jie Sun. Deformation and fracture mechanisms of an annealing-tailored “bimodal” grain-structured Mg alloy[J]. J. Mater. Sci. Technol., 2019, 35(11): 2423-2429.
Fig. 1. Grain structures and {0002} pole figures of (a) as-rolled, (b) 330 °C/1 h, (c) 330 °C/4 h and (d) 330 °C/8 h, respectively. The {0002} pole figures are inserted in (a)-(d).
Fig. 3. Optical microstructures of the surfaces near to fractures for (a) as-rolled, (b) 330 °C/1 h, (c) 330 °C/4 h and (d) 330 °C/8 h; (e, f) SEM images of fine and coarse grains in 330 °C/4 h samples.
Fig. 4. Fractographies of (a) as-rolled, (b) 330 °C/1 h, (c) 330 °C/4 h and (d) 330 °C/8 h samples, respectively; (e-h) high-magnification observations of the squared areas in (a-d), respectively.
Fig. 5. Schematic models for the microstructural evolution at initial (stage I), plastic strain (stage II), cracking (stage III) stages of differently grain-structured samples during tensile process for (a) fine, (b) bimodal and (c) coarse grain structure, respectively.
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