在真空保护气氛下,熔炼不同锂加入量的铜锂合金,用扫描电镜及图像分析仪分析其晶粒大小.结果表明,微量锂增大工业纯铜的晶粒尺寸,且随锂含量的增加,其晶粒尺寸亦随之增大,增至一定值后其晶粒尺寸又随锂含量的增加而减小,这主要是由于锂加入量的改变引起晶体核心形核率的变化所致.
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