将析出硬化钢10 Ni3 MnCuAl在900℃固溶处理2h,500℃时效处理4h或100h后,用三维原子探针(3DAP)研究钢中NiAl和Cu的析出位置关系.结果表明,固溶样品中Ni、Al和Cu三种元素分布均匀.500℃时效4h的样品中发现金属间化合物NiAl和富Cu相在相同位置析出,随着时效时间增加到100 h,NiAl相和富Cu相有逐渐分离的趋势,这是因为NiAl相为体心立方的B2结构,而富Cu相此时已趋于向面心立方的ε-Cu转变.
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