Abstract Views :399 |
PDF Views:0
Authors
Affiliations
1 Department of Metallurgical and Materials Engineering,
Nnamdi Azikiwe University, Awka, NG
2 Department of Mechanical Engineering, Abia State Polythecnic Aba, NG
Source
Indian Journal of Applied Engineering Research, Vol 1, No 1 (2013), Pagination: 103-112
Abstract
Computation of aluminum weldment heat affected zone hardness (HAZH) equivalent based on HAZH of mild steel and cast iron weldment similarly cooled in water. The general model, ϒ = 0.6090√(αβ) is dependent on the hardness of the heat affected zone (HAZ) in mild steel and cast iron weldments cooled in same media. Furthermore, rearrangement of these models could be done to evaluate the HAZ hardness of mild steel or cast iron respectively as in the case of aluminum. The respective deviations of the model-predicted HAZ hardness values β, ϒ and α from the corresponding experimental values was less 0.02% indicating the reliability and validity of the model.
Keywords
Computation, Hardness, Heat Affected Zone, Aluminum Weldments, Mild Steel, Cast Iron, Water
References
- W. D. Callister (Jnr.) Material Science and Engineering. An introduction, 1st ed. Sydney John Wiley & Sons inc. (1996) 852.
- A. C. Davies. The Science and Practice of Welding, 10th ed. Cambridge University Press, (1993) 521.
- R. A. Higgins. Engineering Metallurgy Part II, 2nd ed. London, ELBS, (1993) 466.
- R. A. Higgins. Engineering Metallurgy, Arc Welding Processes, 2nd ed. Edward Arnold Publishers, London, (1994) 57.
- J. F. Lancaster. Metallurgy of Welding: The Mechanical Properties of the Heat Affected Zone, 4th ed. Allen and University, London, (1987) 45.
- J. F. Lancaster. Metallurgy of Welding 5th ed. London, Chapman and Hall, (1993) 389.
- E. E Nnuka, F. A. Ovat and M. I. Oseni. Effect of Electrode Types on the Mechanical Properties and Structure of Welded Steel Joints. JMME, 3(1) (2008) 7-13.
- C. I. Nwoye. 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) (2008) 35-38.
- C. I. Nwoye. 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. Res. J., 1(4) (2009)1-6.
