Ultrasonic fatigue of nickel-chromium alloys at low temperatures

Author

Demkin, V.A.

Author_Institution

Inst. of Metal Phys., Kiev, Ukraine

Volume

40

Issue

6

fYear

1993

Firstpage

676

Lastpage

679

Abstract

The influence of low temperature ultrasonic deformation on the electrical resistivity and magnetic properties of nickel-chromium dilute solid solutions is examined. It is shown that changes in the electrical resistivity and magnetic properties of prequenched samples after ultrasonic fatigue can be explained by order-disorder processes during fatigue. It is concluded that ordering at low temperatures during the ultrasonic deformation is associated with high strain rate and high vacancy concentration produced by deformation.<>

Keywords

acoustoelectric effects; chromium alloys; coercive force; dilute alloys; electrical conductivity of crystalline metals and alloys; fatigue; ferromagnetic properties of substances; magnetic properties of dilute systems; magnetoacoustic effects; nickel alloys; short-range order; ultrasonic effects; ultrasonic materials testing; vacancies (crystal); 17.5 kHz; 4.2 to 300 K; NiCr alloys; SRO formation; coercive force; dilute solid solutions; electrical resistivity; ferromagnetic alloys; low temperature ultrasonic deformation; magnetic properties; magnetisation; order-disorder processes; prequenched samples; short range order; strain rate; ultrasonic fatigue; ultrasonic testing technique; vacancy concentration; Capacitive sensors; Chromium; Conductivity; Electric resistance; Fatigue; Magnetic properties; Nickel alloys; Solids; Stress; Temperature;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.248210

Filename

248210