EFFECT OF COMPOSITION AND THERMAL TREATMENT ON PHASE CONSTITUENT AND ORDER STATE OF CuAlNi ALLOYS
GUI Jianian;REN Qiang;WANG Renhui Wuhan University
Cite this article:
GUI Jianian;REN Qiang;WANG Renhui Wuhan University. EFFECT OF COMPOSITION AND THERMAL TREATMENT ON PHASE CONSTITUENT AND ORDER STATE OF CuAlNi ALLOYS. Acta Metall Sin, 1991, 27(3): 61-66.
Abstract The effect of the composition and thermal treatment on the phaseconstituent, the size of B2- and DO_3 derived domains and martensitic thermoelasticbehaviour in three CuAlNi alloys has been studied by means of metallography,TEM and X-ray diffraction analysis. It is shown that the martensite type changesfrom 18R_1 to 2H structure and the transition temperature decreases with the increaseof the Al content. Moreover, the size of the B2- and DO_3, derived domainsdecreases with the increase of the cooling rate.
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