Effect of homogenization process on the hardness of Zn-Al-Cu alloys

作     者：Jose D.Villegas-Cardenas Maribel L.Saucedo-Munoz Victor M.Lopez-Hirata Antonio De Ita-De la Torre Erika O.Avila-Davila Jorge Luis Gonzalez-Velazquez 

作者机构：Department of Metallurgy and MaterialsInstituto Politecnico Nacional(IPN-ESIQIE)Mexico City 07300Mexico Department of Industrial EngineeringUniversidad Politecnica del Valle de MexicoMexico CityMexico Department of MaterialsUniversidad Autonoma Metropolitana(UAM)Unidad AzcapotzalcoMexico 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2015年第22卷第10期

页      面：1076-1081页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the Secretaría de Investigación-Instituto Politécnico Nacional(No.20140567-0587) Consejo Nacional de Ciencia y Tecnología(No.220929) 

主　　题：zinc–aluminum–copper alloys casting hardness homogenization phases microstructure 

摘      要：The effect of a homogenizing treatment on the hardness of as-cast Zn–Al–Cu alloys was investigated. Eight alloy compositions were prepared and homogenized at 350 °C for 180 h, and their Rockwell B hardness was subsequently measured. All the specimens were analyzed by X-ray diffraction and metallographically prepared for observation by optical microscopy and scanning electron microscopy. The results of the present work indicated that the hardness of both alloys(as-cast and homogenized) increased with increasing Al and Cu contents; this increased hardness is likely related to the presence of the θ and τ′ phases. A regression equation was obtained to determine the hardness of the homogenized alloys as a function of their chemical composition and processing parameters, such as homogenization time and temperature, used in their preparation.