用金相、透射电镜和X射线衍射分析对三种成分的CuAlNi合金研究了成分和热处理对相组成,B2和D0_3型畴尺寸以及马氏体热弹性行为的影响。结果表明,随Al含量的增加马氏体结构类型从18R_1变到2H,并且相变温度降低。随着冷速增大,B2和D0_3型畴的尺寸减小。
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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