采用XRD与TEM分析手段研究了C17200铜合金早期时效相变行为及其对合金性能的影响.结果表明,该合金固溶处理后320℃时效,时效1h内,铍原子借助铜基体中的空位进行上坡扩散,形成富铍区,造成了(200)主峰的左侧出现了比较明显低角度边带峰.合金发生了调幅分解,沿基体的(100)面上形成了圆盘状结构的GP区.利用Daniel-Lipson公式可得出,随时效时间的延长,成分调幅波长先增大后减小；同时,GP区则不断长大,且逐渐转化成板条状的γ'相.调幅分解和γ'相的析出是合金在时效过程中强度、电导率升高的主要原因.
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