INTERNAL FRICTION OF Ag-Cd ALLOY IN THE BAINITIC TRANSFORMATION | Zendy

Jihua Zhang | Zendy; Chen Shuchuan | Zendy; XU Zuyao | Zendy

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INTERNAL FRICTION OF Ag-Cd ALLOY IN THE BAINITIC TRANSFORMATION

Author(s) -

Jihua Zhang,

Chen Shuchuan,

XU Zuyao

Publication year - 1986

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.35.379

Subject(s) - materials science , torsion pendulum clock , alloy , isothermal process , internal friction , nucleation , volume fraction , thermodynamics , instability , bainite , torsion (gastropod) , lattice (music) , microstructure , composite material , mechanics , martensite , physics , medicine , quantum mechanics , acoustics , surgery

The isothermal internal friction of a Ag-42.3% Cd alloy has been measured by means of a low frequency inverted torsion pendulum apparatus between room temperature and 250℃. The relation between Q-1 and temperature with various heating and cooling rate were determined. Experimental results show that as the bainitic transformation occurs, the Q-1 of Ag-Cd alloy increases rapidly. It may be postulated that there are regions of instability of the parent lattice in the course of nucleation process for the bainitic transformation. The increment of Q-1s is a function of the product of internal friction of the fraction of the lattice localized soft region per volume and the nuclea-tion rate J* of the bainite.

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