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Effect of grain boundary precipitates on vibration damping of FeüCrüMgüAl/Si alloy

  • B. M. Girish , B. M. Satish and K. Mahesh
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 101 Issue 12

Abstract

The damping capacity of three different FeüCrüMgüAl/Si alloys was measured using the conventional cantilever beam method. The samples were heat-treated in vacuum at 1100°C for 1 h followed by slow cooling (120°C hü1). The vibration damping capacity of the alloys was definitely influenced by the amount of grain boundary precipitates as well as by the chromium concentration in the precipitates. The three different alloys investigated were FeüCrüMgüAl, FeüCrüMgüSi, and FeüCrüMgüAlüSi. It was found that the FeüCrüMgüAlüSi alloy exhibits the highest damping capacity with the smallest amount of grain boundary precipitates and least chromium concentration. Among the remaining alloys, although the chromium concentrations in the grain boundary precipitates were almost the same, the amount of grain boundary precipitates in FeüCrüMgüAl was lower than in FeüCrüMgüSi, and hence the damping capacity of FeüCrüMgüAl was higher than the other.

Keywords: Vibration; Damping; Grain boundary precipitates; Fe-Cr alloys
* Correspondence address, Prof. Dr. B.M. Girish, Department of Mechanical Engineering, MVJ College of Engineering, #280, 3rd A Main Road, 8th Block, Koramangala, Bangalore, India. Tel.: +91 80 2845-6609, 4981, Fax: +91 80 2845-1524. E-mail: ,

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Received: 2009-9-15
Accepted: 2010-10-4
Published Online: 2013-06-11
Published in Print: 2010-12-01

© 2010, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110431
Keywords for this article
Vibration; Damping; Grain boundary precipitates; Fe-Cr alloys

Articles in the same Issue

  1. Basic
  2. High-temperature in-situ microscopy during stress-induced phase transformations in Co49Ni21Ga30 shape memory alloy single crystals
  3. Contents
  4. contents
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  7. Basic
  8. Atomic mobilities and diffusivities in the fcc, L12 and B2 phases of the Ni-Al system
  9. Experimental investigation of the Zn–Fe–V system at 450°C
  10. Time resolved X-ray imaging of eutectic cellular patterns evolving during solidification of ternary Al–Cu–Ag alloys
  11. Reassessment of the Mg–Ge binary system using CALPHAD supported by first-principles calculation
  12. A quantitative modeling of the unloading behavior of metals during a tensile test
  13. A technique for diameter enlargement in SiC crystal growth
  14. Applied
  15. Thermal and chemical stability of Cr2AlC in contact with α-Al2O3 and NiAl
  16. Microstructure and mechanical properties of Zn25Al3Cu based composites with large Al2O3 particles at room and elevated temperatures
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