Journal
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
Volume 28, Issue 4, Pages 812-818Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(18)64714-4
Keywords
Mg-Al alloy; grain refinement; carbon inoculation; solidification characteristics; computer-aided cooling curve analysis
Categories
Funding
- National Natural Science Foundation of China [51574127]
- Natural Science Foundation of Guangdong Province, China [2014A030313221]
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The Mg-3%Al melt was inoculated by carbon with different holding time. The effect of holding time on grain refining efficiency was evaluated. The solidification characteristics of the carbon-inoculated Mg-3%Al melt with different holding time were assessed by computer-aided cooling curve analysis. The results showed that Mg-3%Al alloy could be effectively refined by carbon inoculation. Slight fading phenomenon occurred with increasing the holding time to 60 min. Carbon inoculation could significantly influence the shape of cooling curves of Mg-3%Al melt. The nucleation starting and minimum temperatures increased. The recalescence undercooling and duration decreased to almost zero after carbon inoculation. The grain refining efficiency of carbon inoculation could be assessed by the shape of the cooling curve and solidification characteristic parameters including nucleation starting and minimum temperatures, recalescence undercooling and duration.
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