Effect of homogenization process on the hardness of Zn–Al–Cu alloys
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第10期
论文作者：Jose D.Villegas-Cardenas Maribel L.Saucedo-Mu?oz Victor M.Lopez-Hirata Erika O.Avila-Davila Jorge Luis Gonzalez-Velazquez
文章页码：1076 - 1081
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.
Jose D.Villegas-Cardenas1,2，Maribel L.Saucedo-Mu?oz1，Victor M.Lopez-Hirata1，Erika O.Avila-Davila1，Jorge Luis Gonzalez-Velazquez1
1. Department of Metallurgy and Materials,Instituto Politecnico Nacional (IPN-ESIQIE),Mexico City 07300,Mexico
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.
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