Influences of Heat Treatment and Grain Size on the Damping Capacity of an Fe-Cr-Al Alloy

Zheng, Zengwei; Wei, Jianning; Han, Fengpeng

doi:10.1002/1521-396x(200205)191:1<89::aid-pssa89>3.0.co;2-6

Cited by 21 publications

(8 citation statements)

References 10 publications

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“…29 Briefly, the coarse grain size in pure Ni, with less grain boundaries and dislocation density, facilitates a rapid and large internal energy dissipation through sliding, thus results in high damping capacity and declined amplitude. 30 After the fluctuations at the beginning, both of the resonant frequency and scanning angle changed slightly, which suggests the plastic deformation within Ni beam reaches to a stable region.…”

Section: Micromechanical Property Measurement Of G−ni Compositementioning

confidence: 99%

Pulse-Reverse Electrodeposition and Micromachining of Graphene–Nickel Composite: An Efficient Strategy toward High-Performance Microsystem Application

Li¹,

An²,

Wang

et al. 2016

ACS Appl. Mater. Interfaces

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Graphene reinforced nickel (Ni) is an intriguing nanocomposite with tremendous potential for microelectromechanical system (MEMS) applications by remedying mechanical drawbacks of the metal matrix for device optimization, though very few related works have been reported. In this paper, we developed a pulse-reverse electrodeposition method for synthesizing graphene-Ni (G-Ni) composite microcomponents with high content and homogeneously dispersed graphene filler. While the Vickers hardness is largely enhanced by 2.7-fold after adding graphene, the Young's modulus of composite under dynamic condition shows ∼1.4-fold increase based on the raised resonant frequency of a composite microcantilever array. For the first time, we also demonstrate the application of G-Ni composite in microsystems by fabricating a Si micromirror with the composite supporting beams as well as investigate the long-term stability of the mirror at resonant vibration. Compared with the pure Ni counterpart, the composite mirror shows an apparently lessened fluctuations of resonant frequency and scanning angle due to a suppressed plastic deformation even under the sustaining periodic loading. This can be ascribed to the reduced grain size of Ni matrix and dislocation hindering in the presence of graphene by taking into account the crystalline refinement strengthen mechanism. The rational discussions also imply that the strong interface and efficient load transfer between graphene layers and metal matrix play an important role for improving stiffness in composite. It is believed that a proper design of graphene-metal composite makes it a promising structural material candidate for advanced micromechanical devices.

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Section: Micromechanical Property Measurement Of G−ni Compositementioning

confidence: 99%

Pulse-Reverse Electrodeposition and Micromachining of Graphene–Nickel Composite: An Efficient Strategy toward High-Performance Microsystem Application

Li¹,

An²,

Wang

et al. 2016

ACS Appl. Mater. Interfaces

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“…[5][6][7][8][9][10][11] Since the Q -1 of Fe-23.0Al-6.0Ni alloys shows low values under magnetic field, the magneto-mechanical damping seems to appear. It is also noted that the λm of the alloys showed higher values compared with Fe-23.0Al binary alloys as shown in Fig.…”

Section: High Damping Capacity In Fe-al-ni Alloysmentioning

confidence: 99%

“…At low strain amplitudes and ambient temperature, the high damping capacity of Fe-Al alloys is usually attributed to the magneto-mechanical damping associated with the irreversible motion of magnetic domain walls. [5][6][7][8][9][10][11][12] However, the ultimate tensile strength of binary Fe-Al alloys was approximately 500 MPa, not enough to use the alloys to the automobile vibration sources.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni Doping on Strength and Damping Capacity of Fe–Al Alloys

et al. 2013

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Strength and damping capacity of Fe-Al alloys doped with different amounts of Ni were examined. FeAl alloys with an appropriate amount of Ni doping exhibited yield stress higher than 1 GPa and internal friction of above 0.032. In these alloys, the NiAl phase with the B2 structure densely precipitated in the Fe-Al matrix, satisfying the cube-on-cube orientation relationship. The precipitation of NiAl resulted in high strength, which was associated with the difference in primary slip systems between the NiAl precipitates and the Fe-Al matrix. Moreover, the internal friction measured under an external magnetic field showed low values, suggesting that Fe-Al alloys with the NiAl precipitates demonstrated magneto-mechanical damping caused by the irreversible motion of magnetic domain walls. The Al concentration in the Fe-Al matrix became appropriate for damping properties by the precipitation of NiAl, resulting in an increase in the internal friction of the alloy.

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“…On the other hand, hysteretic damping with magneto-mechanical origin in Fe-Al based alloys was examined to develop these alloys as high damping materials. [6][7][8][9][10][11] As a result, the alloys have been successfully developed as high damping alloys in Japan. 6,7) It was strongly suggested that the high damping capacity of Fe-Al based alloys at low strain amplitude and at ambient temperature was caused by an irreversible movement of magnetic domain walls during cyclic deformation.…”

Section: Introductionmentioning

confidence: 99%

“…6,7) It was strongly suggested that the high damping capacity of Fe-Al based alloys at low strain amplitude and at ambient temperature was caused by an irreversible movement of magnetic domain walls during cyclic deformation. [5][6][7][8][9] In the present study, the origin of high Q…”

Section: Introductionmentioning

confidence: 99%

Magneto-mechanical and Pseudoelastic Damping of Fe–Al Based Single Crystals

Yasuda¹,

Fukushima²,

Koizumi³

et al. 2009

ISIJ Int.

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Damping behavior of Mn, Co, Ni) in the wide strain amplitude range was examined and the damping mechanism was discussed. In Fe-Al binary single crystals, magneto-mechanical damping caused by irreversible motion of magnetic domain walls took place at low strain amplitudes. On the other hand, pseudoelasticity based on reversible motion of 1/4 ͗111͘ superpartial dislocations appeared in Fe-23.0at%Al single crystals which also contributed to the high damping capacity at high strain amplitudes. The effect of Cr, Mn, Co and Ni on the vibration attenuation of Fe-23.0at%Al crystals was also examined. As a result, Ni doping was found to be effective in the increase in both internal friction and yield strength of Fe-Al alloys.

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Influences of Heat Treatment and Grain Size on the Damping Capacity of an Fe-Cr-Al Alloy

Cited by 21 publications

References 10 publications

Pulse-Reverse Electrodeposition and Micromachining of Graphene–Nickel Composite: An Efficient Strategy toward High-Performance Microsystem Application

Pulse-Reverse Electrodeposition and Micromachining of Graphene–Nickel Composite: An Efficient Strategy toward High-Performance Microsystem Application

Effect of Ni Doping on Strength and Damping Capacity of Fe–Al Alloys

Magneto-mechanical and Pseudoelastic Damping of Fe–Al Based Single Crystals

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