Effect of Heat Treatment on the Mechanical Properties and Interface Structure of 3-ply Ti/Cu/Ti Clad Composite

Yong Keun Kim; Pyung Woo Shin; Sun Ig Hong

doi:10.4028/www.scientific.net/AMR.1102.51

Paper Titles

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Effect of Shot Peening Coverage on Fatigue Strengths of Steels and Aluminum Alloy
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Patch Designing for Damaged Metallic Structure Repaired with Adhesively Bonded Composite Patch
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Application of the Betti Number to Prior Austenite Grain Size Analysis of Repeatedly Quenched Steel Based on the Homology Method
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Effect of Heat Treatment on the Mechanical Properties and Interface Structure of 3-ply Ti/Cu/Ti Clad Composite
p.51

Effect of Heat Treatment on Galvanic Corrosion of Cu/Al/Cu Clad Soaked in 3.5% NaCl Brine Solution
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Relation between the Betti Number of Fatigue Fracture Surfaces and Stress Intensity Factors of Low Carbon Steel (JIS, S45C)
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High Thermal Stability of Mo/Si₃N₄/Mo/Si₃N₄/SiO₂ Multilayer Solar Selective Coatings
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Validation of a Novel Approach for CO₂/N₂ Gas Separations by Means of a Hybrid Ceramic Membrane
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Effect of Heat Treatment on the Mechanical Properties and Interface Structure of 3-ply Ti/Cu/Ti Clad Composite

Abstract:

The effect of heat treatment on the mechanical properties and interface structure of 3-ply Ti/Cu/Ti clad composite was investigated. Strength decreased and the ductility increased with increase of heat treatment temperature. The gradual increase of hardness at 700°C and 800°C indicates the growth of intermetallic compounds at the interface. No visible intermetallic compound formation was observed up to 400°C. The intermetallic layer grew very rapidly above 600°C and its thickness reached ~10μm after heat treatment at 800°C. The absence of cracks emanating from the corners of the indentation mark indicates that intermetallics in Ti/Cu/Ti clad are ductile enough to accommodate the micro-plastic flow from indentation. Four intermetallic layers at the interface were confirmed to be Cu₄Ti, Cu₃Ti₂, CuTi and CuTi₂ based on the EDS spectra, XRD and phase diagram analyses.