%0 Journal Article %T Predictability of Hardness of the Heat Affect Zone in Aluminum Weldments Cooled in Palm Oil Based on Hardness of Similarly Cooled Mild Steel and Cast Iron Weldments %A Chukwuka Nwoye %A Stanley Nwakpa %A Agbo Alfred %A Chidume Nwambu %A Uche Obialor %J Journal of Minerals and Materials Characterization and Engineering %P 358-362 %@ 2327-4085 %D 2013 %I Scientific Research Publishing %R 10.4236/jmmce.2013.16055 %X The predictability of hardness of the heat affected zone (HAZ) in aluminum weldments cooled in palm oil, based on hardness of similarly cooled mild steel and cast iron weldments has been ascertained. The general model: ¦Á = 1.2769 \"\" indicates that HAZ hardness of aluminium weldment is dependant on the ratio of product to sum of HAZ hardness of mild steel and cast iron weldments cooled in palm oil under the same conditions. The maximum deviations of the model-predicted HAZ hardness values ¦Á, ¦Ì and ¦Â from the corresponding experimental values ¦Áexp, ¦Ìexp and ¦Âexp were less than 0.04% indicating the reliability and validity of the model. %K Model %K Hardness %K Heat Affected Zone %K Aluminum Weldments %K Mild Steel %K Cast Iron %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=40062