金属型铸造ZA50合金的力学性能和组织  

Mechanical Properties and Microstructure of Zn-50Al Alloy in Permanent Mold Casting

作　　者：程巨强[1] 

机构地区：[1]西安工业大学

出　　处：《特种铸造及有色合金》2006年第7期452-454,共3页Special Casting & Nonferrous Alloys

基　　金：陕西省教育厅资助项目(04JK209)

摘　　要：研究了金属型铸造Zn-50Al(ZA50)高强度铸造耐磨合金的组织和力学性能。结果表明,ZA50合金金属型铸态组织为α相和(α+η)共析组织及合金化合物,抗拉强度(σb)可达477MPa,金属型铸造+200℃时效处理的组织为α相和粒状(α+η)共析组织及合金化合物,抗拉强度(σb)可达354MPa,ZA50合金比ZA27合金有更高的强度和断裂韧度。分析了合金元素形成的化合物在ZA50合金中的形貌特征。Microstructure and mechanical properties of Zn-50Al (ZA50) alloy in permanent mold casting were investigated. The results show that as-cast microstructure of the ZA50 alloy with tensile strength of 477 MPa in permanent mold casting is composed of α phase, (α+η)eutectoid structure and intermetallic compound, while microstructure of the alloy after aged at 200 ℃ is composed of α phase, particle (α+η)eutectoid structure and intermetallic compound, and its tensile strength reaches 354 MPa. The strength and ductility of ZA50 alloy are higher than those of ZA27 alloy. The morphology of formed intermetallic compound in ZA50 alloy was analyzed also.

关 键 词：金属型铸造 Zn-50A1合金 组织 性能 

分 类 号：TG136.1[一般工业技术—材料科学与工程]