润滑科技信息平台

Changes in effective grain delineation criteria induced by strong texturing of Zn-0.15Mg alloys after friction stir processing

出版日期: 2023-12-17

DOI: https://doi.org/10.1016/j.matlet.2023.135751

作者: Kaicheng Lu; Lin Ma; Tianwei Fu; Qinghe Cui; Shude Ji;

Friction stir processing (FSP) was employed to enhance the mechanical properties of Zn-0.15Mg biodegradable alloys. The FSPed Zn-0.15Mg alloys exhibited a higher ultimate tensile strength of 164.1 MPa than the as-cast alloy. Nevertheless, the mechanical properties of these alloys deviated from the traditional fine-grain strengthening. When assessing the mechanical properties of FSPed-Zn-0.15Mg alloys, it is crucial to evaluate the cleavage fracture unit or effective grain size thoroughly. The determination of the misorientation tolerance angle for the effective grain size (EGS) yielded a value of 25°. A comprehensive analysis was conducted to examine the impact of microstructure properties on the EGS with particular emphasis on texture.

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