Abstract
In order to develop a new high damping aluminium alloy with strength and toughness for advanced aircraft structure application, rapidly solidified (RS) Al–Fe–Mo–Si/Al alloys were synthesized. The damping behaviour, mechanical properties and microstructures of the alloys were studied. Results showed that the damping capacities of RS Al–Fe–Mo–Si/10–15% Al alloys are stable between 7.0–10.0×10-3 at room temperature, which almost reach the high damping threshold, 10.0×10-3. At lower frequency (0.1–10 Hz) the damping capacity is decidely frequency and temperture dependent above 50°C, with lowest frequency and highest temperature resulting in the highest less factor. It was noted that mechanical properties of the Al–Fe–Mo–Si/10–15% Al alloys are both excellent at room temperature (σb=536–564 MPa, δ=7.2–11.4%) and at elevated temperature (250°C: σb=295–324 MPa). Analysis of microstructures reveal that the damping capacity arises from deformation of the pure Al areas, and strength at elevated temperature from the dispersion strengthening of intermetallic phase. © 1998 Chapman & Hall
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Shenglong, D., Dabo, L., Tianzhen, W. et al. Damping behaviour and mechanical properties of rapidly solidified Al–Fe–Mo–Si/Al alloys . Journal of Materials Science 33, 2227–2231 (1998). https://doi.org/10.1023/A:1004352106491
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DOI: https://doi.org/10.1023/A:1004352106491