CAJ | 학술논문

对Ag-6Cu-xZn(x=0,1,2)合金铸态显微组织、物相及凝固行为进行了研究，结果表明，Zn对Ag-Cu合金的二次枝晶间距有细化作用；Ag-6Cu-xZn合金主要由α相(富Ag固溶体相)和少量的β相(富Cu和Zn固溶体相)组成，β相弥散分布于二次枝晶间；Zn的添加降低了合金及第二相的熔化温度，且 Zn 含量越高，合金熔化温度降低趋势越大，其凝固特征是一个典型的固溶体合金的非平衡凝固过程。
대Ag-6Cu-xZn(x=0,1,2)합금주태현미조직、물상급응고행위진행료연구，결과표명，Zn대Ag-Cu합금적이차지정간거유세화작용；Ag-6Cu-xZn합금주요유α상(부Ag고용체상)화소량적β상(부Cu화Zn고용체상)조성，β상미산분포우이차지정간；Zn적첨가강저료합금급제이상적용화온도，차 Zn 함량월고，합금용화온도강저추세월대，기응고특정시일개전형적고용체합금적비평형응고과정。
The as-cast microstructure, chemical phase and solidification behavior of Ag-6Cu-xZn (x=0, 1, 2) alloys were investigated. The results indicate that, the Zn in Ag-Cu alloy could refine the secondary dendrite arm spacing, but its refining effect is limited. The Ag-Cu-Zn alloy is mainly composed ofα phase (silver-rich phase) and littleβ phase ((copper, zinc)-rich phase).βphases are dispersively distributed in secondary dendrite, they will help to improve the abrasion resistance properties of materials. Adding Zn can reduce the melting temperature of the alloy and the second phase, the higher content of Zn, the greater tendency to reduce the melting temperature of the alloy, the solidification feature of Ag-Cu-Zn alloy is a typical of non-equilibrium solidification of Solid Solution.