Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding

Using colloid water as a covering for explosives can improve the energy efficiency for explosive welding, while its effects on bonding properties remain unclear. Here, by employing titanium/steel as a model system, the effect of covering thickness on microstructures and mechanical properties of the...

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Main Authors: Fei Wang, Ming Yang
Format: Article
Language:English
Published: Polish Academy of Sciences 2023-12-01
Series:Archives of Metallurgy and Materials
Subjects:
Online Access:https://journals.pan.pl/Content/129633/PDF/AMM-2023-4-09-Yang.pdf
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author Fei Wang
Ming Yang
author_facet Fei Wang
Ming Yang
author_sort Fei Wang
collection DOAJ
description Using colloid water as a covering for explosives can improve the energy efficiency for explosive welding, while its effects on bonding properties remain unclear. Here, by employing titanium/steel as a model system, the effect of covering thickness on microstructures and mechanical properties of the bonding interface was systematically investigated. It was found that all the welds displayed wavy interfaces, and the wave size increased with increasing covering thickness. Vortices characterized by solidified melt zones surrounded by strongly deformed parent materials, were only formed for the welds performed with a covering. Moreover, with increasing covering thickness, both the tensile strength and the elongation of the titanium/steel plate decreased, and the failure mode changed from ductile to cleavage fracture, gradually. In the tensile-shear tests, all the fractures took place in titanium matrix without separation at interface, indicating that the titanium/steel interfaces had an excellent bonding strength. The micro-hardness decreased with increasing distance from the interface, and this trend was more remarkable for a thicker covering. The micro-hardness inside the solidified melt zones was far higher than that observed in strain-hardened layers of the parent metal, due to formation of hard intermetallic compounds.
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spelling doaj.art-ee6d95c30221436ca337dd77043783bc2023-12-22T14:27:45ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092023-12-01vol. 68No 412911299https://doi.org/10.24425/amm.2023.146194Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive WeldingFei Wang0Ming Yang1Anhui University of Science and Technology State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Huainan, Anhui Province, ChinaNanjing University of Science and Technology, National Key Laboratory of Transient Physics, Nanjing, 210094, ChinaUsing colloid water as a covering for explosives can improve the energy efficiency for explosive welding, while its effects on bonding properties remain unclear. Here, by employing titanium/steel as a model system, the effect of covering thickness on microstructures and mechanical properties of the bonding interface was systematically investigated. It was found that all the welds displayed wavy interfaces, and the wave size increased with increasing covering thickness. Vortices characterized by solidified melt zones surrounded by strongly deformed parent materials, were only formed for the welds performed with a covering. Moreover, with increasing covering thickness, both the tensile strength and the elongation of the titanium/steel plate decreased, and the failure mode changed from ductile to cleavage fracture, gradually. In the tensile-shear tests, all the fractures took place in titanium matrix without separation at interface, indicating that the titanium/steel interfaces had an excellent bonding strength. The micro-hardness decreased with increasing distance from the interface, and this trend was more remarkable for a thicker covering. The micro-hardness inside the solidified melt zones was far higher than that observed in strain-hardened layers of the parent metal, due to formation of hard intermetallic compounds.https://journals.pan.pl/Content/129633/PDF/AMM-2023-4-09-Yang.pdfexplosive weldingcoveringmicrostructuremechanical properties
spellingShingle Fei Wang
Ming Yang
Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding
Archives of Metallurgy and Materials
explosive welding
covering
microstructure
mechanical properties
title Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding
title_full Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding
title_fullStr Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding
title_full_unstemmed Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding
title_short Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding
title_sort effect of colloid water thickness on microstructures and mechanical properties of titanium steel interfaces prepared by explosive welding
topic explosive welding
covering
microstructure
mechanical properties
url https://journals.pan.pl/Content/129633/PDF/AMM-2023-4-09-Yang.pdf
work_keys_str_mv AT feiwang effectofcolloidwaterthicknessonmicrostructuresandmechanicalpropertiesoftitaniumsteelinterfacespreparedbyexplosivewelding
AT mingyang effectofcolloidwaterthicknessonmicrostructuresandmechanicalpropertiesoftitaniumsteelinterfacespreparedbyexplosivewelding