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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
Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria
Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria
Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, Nigeria
Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria
Department of Mechanical Engineering, Abia Polythecnic Aba, Nigeria
- 1 Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria
- 2 Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria
- 3 Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, Nigeria
- 4 Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria
- 5 Department of Mechanical Engineering, Abia Polythecnic Aba, Nigeria
Journal of Minerals and Materials Characterization and Engineering·Volume 01 (2013)·Pages 358–362·Published 26 November 2013·DOI10.4236/jmmce.2013.16055
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Abstract
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: α = 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 α , μ and β from the corresponding experimental values α exp , μ exp and β exp were less than 0.04% indicating the reliability and validity of the model.
KeywordsModelHardnessHeat Affected ZoneAluminum WeldmentsMild SteelCast Iron
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