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利用拉伸试验、电阻—温度曲线测量、光镜、Ｘ射线衍射及透射电镜分析方法研究了Ｃｕ－Ａｌ１０．２－Ｍｎ４．９－Ｚｎ４．６－Ｚｒ０．３合金的宽滞后效应。结果表明，随着应变的增大，该合金相变滞后增宽，马氏体可逆转变量减少。在应力下合金组织变化如β→２Ｈ转变、１８Ｒ→２Ｈ转变、某些变体择尤长大，变体间的合并是主要变形机制。这些运动导致了交叉组织、带状组织、锯齿状边界、孪晶碎片及位错缠结的产生，破坏了变体间界面共格关系，使得其在热激活作用下难以运动。这可能是产生宽滞后效应和使可逆马氏体量减少的主要原因。
The wide hysteresis effect of Cu-Al10.2-Mn4.9-Zn4.6-Zr0.3 alloy was investigated by means of tensile test, resistance-temperature curve measurement, light microscope, X-ray diffraction and transmission electron microscopy. The results show that with the increase of strain, the phase transformation hysteresis broadened and the amount of reversible transformation of martensite decreased. Changes in the alloy under stress such as β → 2H transition, 18R → 2H transition, some variants especially grow particularly large, the merger between variants is the main deformation mechanism. These movements lead to the formation of cross-weaves, banded structures, serrated boundaries, twins and dislocations, disrupting the coherent relationship between the variants and rendering them hard to move under heat activation. This may be the main cause of the wide lag effect and the reduction of the amount of reversible martensite.