Damping in Ferrous Shape Memory Alloys

Abstract

The damping properties of Fe-Mn-Si, Fe-Ni-Co-Ti and Fe-Al-C alloy systems were examined by DMTA and oscillation methods. The martensite transformations and microstructures were studied and examined by TEM, resistivity, and DSC. High damping was found in FeMnSi and FeNiCoTi alloys with microstructures containing glissile inter-variant martensite interfaces, while those with sessile inter-variant martensite interfaces exhibit lower damping. The general agreement between the damping peaks and transformation temperatures further confirms the close relations between high damping and shape memory behavior.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1993
Accession Number
ADA271009

Entities

People

  • C. M. Wayman
  • C. Y. Lei
  • L. M. Schetky
  • M. H. Wu
  • Manfred Wuttig

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Crystal Structure
  • Heat Treatment
  • Internal Friction
  • Iron Alloys
  • Martensite
  • Materials
  • Materials Engineering
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Microstructure
  • Steel
  • Stresses
  • Tensile Strength
  • Transitions

Fields of Study

  • Materials science

Readers

  • Control Systems Engineering.
  • Powder metallurgy of Titanium alloys.