Electromagnetic shock treatment of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy: Triple junction network, texture and deformation mechanisms
Author Identifier (ORCID)
Lai Chang Zhang: https://orcid.org/0000-0003-0661-2051
Abstract
A novel energy-efficient electromagnetic shock treatment (EMST) method was proposed to enhance grain boundary connectivity and improve mechanical properties of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy. Based on grain boundary network, this work systematically evaluated the stability and connectivity of the triple junction (TJ) network under EMST and further verified it through uniaxial tension and nanoindentation. Additionally, the phase structure, grain roundness (Rnc), texture and deformation mechanisms were thoroughly investigated. The results indicated that EMST can directly regulate the TJ network, and the number of TJ significantly increased, which facilitated crack nucleation and had adverse effect on plasticity. The difference in dihedral angles of TJ decreased, which enhanced the stability of the TJ network and facilitated to improve tensile strength, which was well validated by tensile experiments. Another interesting phenomenon was that the synergistic effect of electric current and magnetic field leads to the formation of equiaxed grains. Nanoindentation experiments revealed the consistency of indentation behavior weakened at a current density of 26.7 A/mm2, whereas it was enhanced at 50 A/mm2. This work suggested that EMST was an effective method to optimize grain boundary connectivity and mechanical properties.
Document Type
Journal Article
Date of Publication
8-20-2025
Volume
1038
Publication Title
Journal of Alloys and Compounds
Publisher
Elsevier
School
Centre for Advanced Materials and Manufacturing / School of Engineering
Funders
National Natural Science Foundation of China (92266102) / National Natural Science Foundation of China (52271135, 52433016) / National Key R&D Program of China (2024YFB4609700), Open Project of Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials (GFST2024KF05) / National Key R&D Program of China (2020YFA0714900) / Innovative Research Group Project of Hubei Provincial Natural Science Foundation (2025AFA014) / Edith Cowan University (23965)
Copyright
subscription content
Comments
Zhou, J., Sun, H., Liu, C., Wen, Y., Wang, L., Zhang, L., Xie, L., & Hua, L. (2025). Electromagnetic shock treatment of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy: triple junction network, texture and deformation mechanisms. Journal of Alloys and Compounds, 1038, 182676. https://doi.org/10.1016/j.jallcom.2025.182676