RESEARCH OF HEAT TREATMENT CONDITION INFLUENCE ON CR-NI-AL ALLOY MICROSTRUCTURE

Svetlana Yakovleva, Shcherbak Alexander G.

2011 , VOLUME 11, NUMBER 5 ( SEPTEMBER-OCTOBER )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

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Nikiforov
Vladimir O.
D.Sc., Prof.

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RESEARCH OF HEAT TREATMENT CONDITION INFLUENCE ON CR-NI-AL ALLOY MICROSTRUCTURE

S. Yakovleva, A. G. Shcherbak

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Abstract

This article presents the study of heat treatment condition influence on Cr-Ni-Al alloy microstructure and its mechanical properties including dimensional stability characteristics which provide keeping high accuracy of float gyro precision details. Optimal annealing conditions are detected. Correlation between ageing conditions and dimensional stability characteristics such as precision elastic limit σ_0,0001is determined. Ageing temperature range 400-550°Сis defined as allowing getting higher precision elastic limit with keeping alloy plasticity.

Keywords: dimensional stability, precipitation hardening alloy, microstructure, precision elastic limit, annealing, ageing.

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