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研究了不同热处理工艺、晶粒束缚以及工作温度、应力循环、热循环和应力热循 环对 ＣｕＺｎＡｌ合金超弹性的影响。试验结果表明：合金常规淬火获得最佳超弹性的 淬火加热温度为８９０℃，对于所研究的线材试样而言，保温时间与线材直径有关；合 金采用双相区淬火，可获得较好的超弹性，其最佳淬火加热温度为７００℃，保温时间 为１０ｍｉｎ；晶粒束缚影响合金的超弹性，ｇｓ／Ｄ越大，晶粒束缚越小，超弹性越好； 合金的超弹性与工作温度有关，超弹性最佳值是在Ａｆ点以上一段温度范围内．其下限 温度为Ａｆ点以上１７～２２℃。合金在应力循环后出现了循环软化现象而不是循环硬 化现象，应力循环后，相变的熵及焓变降低；热循环和应力热循环均使合金的相变点 提高。
The effects of different heat treatment processes, grain restraint and working temperature, stress cycling, thermal cycling and stress-thermal cycling on the hyperelasticity of CuZnAl alloy were investigated. The results show that the optimum quenching temperature for the superalloy obtained by conventional quenching is 890 ℃. For the samples studied, the holding time is related to the wire diameter. Elasticity, the best quenching heating temperature is 700 ℃, holding time is 10min; grain restraint affect the superelastic alloy, gs / D the greater the smaller the grain binding, the better the superelastic; superelastic alloy and the working temperature The best value for superelasticity is over a temperature range above the Af point. The lower limit temperature is 17 ~ 22 ℃ above Af. The alloy softens after cyclic stress instead of cyclic hardening. After the stress cycles, the entropy and enthalpy change of the phase transformation decrease. Both the thermal cycling and the stress thermal cycling increase the transformation temperature of the alloy.