Factorial Analysis of Welding Current Influence on Heat Affected Zone Hardness of Cast Iron, Aluminium, and Mild Steel Weldments Cooled in Palm Oil
Joint Authors
Nwoye, C. I.
Odo, J. U.
Ameh, E. M.
Nwakpa, S. O.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-20
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Factorial analysis of heat affected zone hardness of some metals was evaluated.
Three models were derived and used as tools for evaluating the welding current influence on the predictability of HAZ hardness in aluminium, cast iron, and mild steel weldments similarly cooled in palm oil.
It was discovered that on welding these materials, and similarly cooling their respective weldments in palm oil, the model αw=(γwβw/(βw+γw))((iαiβ+iαiγ)/iγiβ)0.8498 predicts aluminium weldment HAZ hardness by multiplying the determined general current product rule (GCPR) ((iαiβ+iαiγ)/iγiβ)0.8498 with the ratio: HAZ hardness product of cast iron and mild steel/HAZ hardness sum of cast iron and mild steel (γwβw/(βw+γw)).
Computational analysis of experimental and model-predicted results indicates that aluminium, cast iron, and mild steel weldment HAZ hardness per unit welding current as evaluated from experiment and derived model are 3.3917, 4.8333, and 2.7944 and 3.3915, 4.8335, and 2.7946 (VHN) A−1, respectively.
Deviational analysis shows that the maximum deviation of model-predicted HAZ hardness from the experimental results is less than 0.007%.
This invariably implies over 99.99 % confidence level for the derived models.
American Psychological Association (APA)
Nwoye, C. I.& Odo, J. U.& Ameh, E. M.& Nwakpa, S. O.. 2013. Factorial Analysis of Welding Current Influence on Heat Affected Zone Hardness of Cast Iron, Aluminium, and Mild Steel Weldments Cooled in Palm Oil. Journal of Metallurgy،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-456886
Modern Language Association (MLA)
Nwoye, C. I.…[et al.]. Factorial Analysis of Welding Current Influence on Heat Affected Zone Hardness of Cast Iron, Aluminium, and Mild Steel Weldments Cooled in Palm Oil. Journal of Metallurgy No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-456886
American Medical Association (AMA)
Nwoye, C. I.& Odo, J. U.& Ameh, E. M.& Nwakpa, S. O.. Factorial Analysis of Welding Current Influence on Heat Affected Zone Hardness of Cast Iron, Aluminium, and Mild Steel Weldments Cooled in Palm Oil. Journal of Metallurgy. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-456886
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-456886