Jafari, Hassan and Idris, Mohd. Hasbullah and Ourdjini, Ali and Farahany, Saeed (2012) In-situ melting assessment of AZ91D granules by thermal analysis. Advanced Science Letters, 14 (1). pp. 295-298. ISSN 1936-6612
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Official URL: http://dx.doi.org/10.1166/asl.2012.3980
Abstract
In this research, the response of AZ91D granules during In-Situ melting as a novel technique for investment casting of magnesium alloy was investigated. In order to assess the melting behaviour, the granules were heated at 700 °C for 30 min under three different protective environments, including covering flux, argon atmosphere and their combination. Thermal analysis experiments were carried out to disclose the heating profile of the granules and to detect any probable characteristic temperatures. Visual analysis was employed to characterize the products of the In-Situ melting process in each environment. The results showed that the granules underwent a severe oxidation when heated under the covering flux solely. However, the detected characteristic temperatures revealed that they experienced melting process during heating although they failed to produce a molten metal pool. Flowing argon gas not only prevented the granules from oxidation suffering, also assisted them to provide molten metal. It was further observed that using covering flux remarkably contributed to an increase in the feasibility of the granules melting in an argon atmosphere.
Item Type: | Article |
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Additional Information: | Indexed by Scopus |
Subjects: | T Technology > TJ Mechanical engineering and machinery |
Divisions: | Mechanical Engineering |
ID Code: | 32837 |
Deposited By: | Fazli Masari |
Deposited On: | 16 Jul 2013 00:28 |
Last Modified: | 17 Oct 2017 07:20 |
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