Microstructure and mechanical properties of TA1/3A21 composite plate fabricated via explosive welding

ABSTRACT

The microstructure and mechanical properties of explosively welded TA1/3A21 composite plate were studied. The results suggested that the bonding interface had a wavy appearance, and two types of Ti–Al solid solutions were found in the crest region. Most of the interfaces had a thin diffusion layer with a thickness of approximately 3 µm, and no brittle intermetallic compounds were formed. The interface of the explosively welded TA1 Ti/3A21 Al composite plate exhibited reliable shear and bending properties. The propagation of the facile cracks initiated at the Ti–Al solid solution/Al interface, and the Ti–Al solid solution region at the vortex could be terminated by the Ti matrix. In addition, the complex bonding interface structure inhibited the crack propagation along the interface.

KEYWORDS:

• Titanium alloy
• aluminium alloy
• explosive welding
• composite plate
• mechanical properties
• microstructure
• solid solution
• bonding interface

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

L. X. Sun http://orcid.org/0000-0002-8786-6469

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This work was supported by the Fundamental Research Funds for the Central Universities [grant number HEUCFP201850], National Natural Science Foundation of China [grant number 51701051] and Natural Science Foundation of Heilongjiang Province [grant number JC2017012].