ZnAl13Cu7MgSb合金早期时效特征  

Initial ageing characteristics of ZnAl_(13)Cu_7MgSb alloy

作　　者：陶小克[1] 刘杰[1] 彭日升[1] 

机构地区：[1]天津理工学院,天津300191

出　　处：《兵器材料科学与工程》2002年第1期14-16,23,共4页Ordnance Material Science and Engineering

摘　　要：用X射线衍射仪及TEM研究了含Al较低的ZnAl13Cu7MgSb合金固溶处理后时效早期的相变特征。结果表明 ,该合金时效早期先发生过饱和 β’相的分解 (β’→α’ +ε+η) ,然后更富Al的α’发生调幅分解。调幅分解阶段 ,波长 (λ)基本不变。调幅组织的长大满足λ∝t1/ 3 关系。The initial ageing phase-transformation characteristics of ZnAl13Cu7MgSb alloy with lower Al content after solution treatment was analyzed by means of X-ray diffraction and TEM. The results show that, during the initial ageing of the alloy, the supersaturated β′ phase decomposed firstly, then the spinodal decomposition took place in the Al-richer α′ phase. The wavelength, λ, was found to remain constantly during spinodal decomposition.The coarsening of the spinodal microstructure was found to obey the λ∝t 1/3 growth law.The spinodal decomposition is the chief cause of the age hardening of the alloy.

关 键 词：ZnAl13Cu7MgSb合金 锌合金 锌铝合金 调幅分解 时效 

分 类 号：TG146.13[一般工业技术—材料科学与工程]