Work

Influence of Ag on the precipitates in Mg-8Gd-0.8Y-0.5Zn-0.3Zr alloy

Year: 2024

Type: article

Abstract: This paper investigates the influence of Ag element on the microstructure and mechanical properties, as well as the synergistic strengthening and toughening mechanisms of the Mg-8Gd-0.8Y-0.5Zn-0.3Zr alloy. The study shows that the addition of 0.1 wt% Ag increases the yield strength , ultimate tensile strength , and elongation to 225 MPa, 338 MPa, and 16.5%, respectively, which are 25%, 14%, and 73% higher compared to the Ag-free alloy. The introduction of Ag increases the aspect ratio of nanoscale precipitates β′ phases from 4.4:1 to 6:1, enhancing the ability of dislocation pinning and thereby improving the alloy's strength. Moreover, Ag addition can reduce the volume fraction of 18R-LPSO phases, increases the numbers of I1 (ABCB) and I2 (ABCA) stacking faults, and particularly enhancing the activation of slip systems, thus promoting the alloy's ductility.

Source: Journal of Materials Research and Technology

DOI: 10.1016/j.jmrt.2024.12.080

Authors: Cheng Renju, Zhou Yongfeng, Wang Haijun, Jiang Linxi, Tang Aitao, Jiang Bin

Institutions: Chongqing University of Technology, Chongqing University

Language: English

Topic: Magnesium Alloys: Properties and Applications

Subfield: Biomaterials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,430

Funders: Chongqing University of Technology, Natural Science Foundation of Chongqing, National Key Research and Development Program of China, Key Research and Development Program of Sichuan Province