September 10, 2025Open Access

Microstructure and mechanical properties of Al-10at% Sc/6061Al dissimilar diffusion welding

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A high-strength weld joint can be achieved without an interlayer due to low maximum residual stress at the interface.
Thermal conductivity of the Al-10at% Sc alloy averages 158W/(m·K), indicating efficient heat transfer properties.
Young's modulus of Al-10at% Sc decreases from 91 GPa at 25°C to 71 GPa at 600°C, demonstrating temperature-dependent material behavior.
Welding at 450–500°C with a pressure of around 125 MPa leads to optimal joint properties, revealing key processing parameters.

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Experiments demonstrate weld joint properties in Al-10at% Sc and 6061 Al, suggesting optimal conditions for strength.

zhang et al. (2025) studied this question.

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