ABSTRACT Models have been derived for assessment and computational analysis of the hardness of the
heat affected zone (HAZ) in aluminum weldment. The general model;
γ = 1.2714[(αβ/α + β)]
was found to predict the HAZ hardness of aluminum weldment cooled in water as a function
of the HAZ hardness of both mild steel and cast iron welded and cooled under the same
conditions. The maximum deviations of the model-predicted HAZ hardness values γ, α and β
from the corresponding experimental values γexp, αexp and βexp were less than 0.02%
Cite this paper
C. Nwoye, C. Anyakwo, E. Obidiegwu and N. Nwankwo, "Models for Assessment and Computational Analysis of Hardness of the Heat Affected Zone in Water Cooled Aluminum Weldment," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 8, 2011, pp. 707-715. doi: 10.4236/jmmce.2011.108055.
 Weman, K. (2003) Welding Process Handbook. CRC Press LLC, New York.
Nnuka, E. E., Ovat, F. A., and Oseni, M. I., (2008) Effect of Electrode Types on the Mechanical Properties and Structure of Welded Steel Joints. JMME, 3(1):7-13.
Lancaster, J. F., (1987) Metallurgy of Welding: The Mechanical Properties of the Heat Affected Zone, 4th Edition, Allen and University, London. p45.
Nwoye, C. I. (2008) Comparative Studies of the Cooling Ability of Hydrocarbon Based Media and their Effects on the Hardness of the Heat Affected Zone (HAZ) in Weldments JMME 3(1):35-38.
Nwoye, C. I., Odumodu, U., Nwoye, C. C., Obasi, G. C., and Onyemaobi, O. O. (2009) Model for Predictive Analysis of Hardness of the Heat Affected Zone in Aluminum Weldment Cooled in Groundnut Oil Relative to HAZ Hardness of Mild Steel and Cast Iron Weldments Cooled in Same Media. New York Science Journal, 2(6): 93-98.
Nwoye, C. I. (2009) Quadratic Model for Predicting the Hardness of Heat Affected Zone in Water Cooled Cast Iron Weldment In Relation to Similarly Cooled Aluminum and Mild Steel Weldments. Journal of Mineral and Materials Characterization and Engineering, 8(10):765-773.
Nwoye, C. I. (2009) Quadratic and Linear Models for Predicting the Hardness of Heat Affected Zone in Air Cooled Cast Iron Weldment in Relation to the HAZ Hardness of Aluminum and Mild Steel Weldments Cooled in Same Media. Researcher Journal, 1(4):1-6.
Nwoye, C. I., and Mbuka, I. E. (2010) Models for Predicting HAZ Hardness in cast iron Weldment Cooled in Groundnut Oil in Relation to HAZ Hardness of Aluminum and Mild Steel Weldments Cooled in Same Media. Materials Research Innovation, 14(4):312-315