Influence of electroshock treatment on fracture behavior of TiC/Ti-6Al-4V manufactured by laser melting deposition
Author Identifier (ORCID)
Lai Chang Zhang: https://orcid.org/0000-0003-0661-2051
Abstract
The use of different post-processing methods to improve the microstructure and properties of titanium matrix composites (TMCs) manufactured by additive manufacturing has always been of concern to many researchers. Electroshock treatment (EST) as a novel method was used to modify microstructure and mechanical properties of the TMC of TiC/Ti-6Al-4V manufactured by laser melting deposition (LMD). The results the α phase grains were refined after 0.08 s EST and the microstructure transformed from a Widmanstatten structure to a basketweave structure. The results of tensile properties revealed that the elongation increased from 4.9 % (untreated) to 5.2 % after 0.04 s EST, the fracture morphology analysis showed that ductile fracture became predominant with some residual brittle fractures existed as EST time increased. The results of in-situ tensile test indicated that the emergence of crack bridges hindered crack extension after EST, which enhancing the toughness of TMC. All results show that EST is an effective method for optimizing the microstructure and improving the mechanical performances of LMD TiC/Ti-6Al-4V, providing a novel post-treatment method for LMD TMCs.
Document Type
Journal Article
Date of Publication
12-1-2025
Volume
49
Publication Title
Materials Today Communications
Publisher
Elsevier
School
Centre for Advanced Materials and Manufacturing / School of Engineering
Funders
National Natural Science Foundation of China (92266102) / National Key R&D Program of China (2024YFB4609700) / National Natural Science Foundation of China (52271135, 52433016, 52571177) / Open Project of Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials (GFST2024KF05) / Innovative Research Group Project of Hubei Provincial Natural Science Foundation (2025AFA014)
Copyright
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Comments
Huang, C., Liu, B., Wu, Y., Liu, C., Wen, Y., Wang, L., Lu., W., Zhang., L. C., Zhang., & Xie, L. (2025). Influence of electroshock treatment on fracture behavior of TiC/Ti-6Al-4V manufactured by laser melting deposition. Materials Today Communications, 49, 113710. https://doi.org/10.1016/j.mtcomm.2025.113710