Solid Solution Treatment Improved Damping Behavior in an As-casted and Cold-rolled Mn-20Cu-5Ni-2Fe Alloy
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Fuxing Yin
Abstract
Temperature and strain-amplitude dependent variations of logarithmic decrement (δ) in a high damping Mn-20Cu-5Ni-2Fe (at.%) alloy are compared for 4 different processing conditions. The primarily cold-rolled sample shows δ above 0.08 in a wide temperature range of about 100 °C, while solution treating the as-casted sample results in a strain-amplitude sensitive damping behavior, as high as 0.25 at the strain of 2.0 × 10–4. The chemical inhomogeneity in primarily cast alloy is reflected by the flattened changes of Young's modulus (E), broadened X-ray patterns, and the co-existence of twin plates and tweed microstructure. While the strain-amplitude sensitive damping behavior is related to the large fraction of Mn-rich γMn phase, the thin (011) twin plates, intersected with the traces of stacking faults, are considered to be the product of dislocation reaction at the conjunction of intersected (111) plane. Such twins may possess a low activation energy for cyclic movement, and therefore cause a stable damping behavior in the vicinity of room temperature.
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© 1998 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Aufsätze
- Diffusion of Ge in Binary and Ternary Al–(Si,Ge) Solid-solution Alloys
- Microstructure and Fatigue Properties of the β-Titanium Alloy β-CEZ
- Mg-rich Phase Equilibria and Thermodynamic Assessment of the Mg-Sc System
- Thermal Expansion of Al and TiB2 in the Temperature Range 300 to 900 K and Calculated Lattice Fit at the Melting Temperature for Al
- Solid Solution Treatment Improved Damping Behavior in an As-casted and Cold-rolled Mn-20Cu-5Ni-2Fe Alloy
- Strong Solute-Solvent Interactions in the Systems Mg-Pd and AL-Pd: Manifestation of Charge Transfer and s–p–d Hybridization
- Atomization Stage Analysis of Liquid Dynamic Compaction Process by Fractional Factorial Design
- Plastification of Bismuth Crystals under Simultaneous Superposition of Electric and Magnetic Fields
- Formation and Transformation of Intermetallic Particles in a Strip-cast Al-0.8Fe-0.6Si Alloy
- Microstructure and Mechanical Properties of SG-Iron in the Carbon Equivalent Range 3.78 to 5.24 %
- Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
- Personen
- Veranstaltungen
- Buchbesprechungen
- Terminkalender
Articles in the same Issue
- Frontmatter
- Aufsätze
- Diffusion of Ge in Binary and Ternary Al–(Si,Ge) Solid-solution Alloys
- Microstructure and Fatigue Properties of the β-Titanium Alloy β-CEZ
- Mg-rich Phase Equilibria and Thermodynamic Assessment of the Mg-Sc System
- Thermal Expansion of Al and TiB2 in the Temperature Range 300 to 900 K and Calculated Lattice Fit at the Melting Temperature for Al
- Solid Solution Treatment Improved Damping Behavior in an As-casted and Cold-rolled Mn-20Cu-5Ni-2Fe Alloy
- Strong Solute-Solvent Interactions in the Systems Mg-Pd and AL-Pd: Manifestation of Charge Transfer and s–p–d Hybridization
- Atomization Stage Analysis of Liquid Dynamic Compaction Process by Fractional Factorial Design
- Plastification of Bismuth Crystals under Simultaneous Superposition of Electric and Magnetic Fields
- Formation and Transformation of Intermetallic Particles in a Strip-cast Al-0.8Fe-0.6Si Alloy
- Microstructure and Mechanical Properties of SG-Iron in the Carbon Equivalent Range 3.78 to 5.24 %
- Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
- Personen
- Veranstaltungen
- Buchbesprechungen
- Terminkalender
