铜锡系合金中的某些铸造合金成分,经淬火后所得的马氏体组织,随温度变化发生奇异的可逆转变,即将此种合金所铸的零件(试样)加热至母相淬火后所得到的马氏体,重新加热时马氏体不发生分解,仍然回到原来母相。这种效应随着试件加热温度的升高,马氏体由大变小直至消失;冷却时从某固定的温度开始,随着温度的降低,马氏体重新出现长大。这种马氏体随温度升降而消长,称为热弹马氏体。这种效应反映出一些奇异的功能——形状记忆效应。它将在某些 Copper-tin alloys in some of the casting alloy composition, after quenching the resulting martensitic structure, with the temperature change occurs singularly reversible transformation of the alloy cast part (sample) is heated to the mother after quenching The resulting martensite, martensitic reheating does not decompose, still back to the original mother. This effect with the heating temperature of the specimen increases, martensite from large to small until disappear; cooling from a fixed temperature, with the decrease of temperature, martensite re-emergence and growth. This martensite with the temperature rise and decline, known as the hot bounce martensite. This effect reflects some singular function - the shape memory effect. It will be in some