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A STUDY OF OXYGEN A...
A STUDY OF OXYGEN ACTIVITIES BEFORE THE START OF SOLIDIFICATION OF CAST IRONS
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- Ekengård, Johan, 1976- (author)
- KTH,Tillämpad processmetallurgi,Sandvik SRP AB, Svedala, Sweden
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- Jönsson, Pär (author)
- KTH,Tillämpad processmetallurgi,KTH, Stockholm, Sweden
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- Diószegi, Attila, 1962- (author)
- Jönköping University,JTH, Material och tillverkning,JTH. Forskningsmiljö Material och tillverkning – Gjutning
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(creator_code:org_t)
- 2016-06-16
- 2016
- English.
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In: International Journal of metalcasting. - : Springer Science and Business Media LLC. - 1939-5981 .- 2163-3193. ; 10:4
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Focus in this work was to study dissolved oxygen content and oxygen activities in different cast irons. Plant trials were performed at three occasions for lamellar, compacted and nodular iron melts. The results show that at temperatures close to the liquidus temperature the oxygen activities ranged from 0.03-0.1 ppm for LGI, around 0.02 ppm for CGI and 0.001ppm for SGI. In addition, it was found that as oxygen activities increase with time after an Mg treatment, the ability to form compacted graphite or nodular graphite in Mg-treated iron melts was lowered. Also, oxygen activity differences up to 0.07 ppm were found for different hypoeutectic iron compositions for lamellar graphite iron at the liquidus temperature. Overall, the observed differences in the dissolved oxygen levels are believed to influence how graphite particles are incorporated into the austenite matrix and how the graphite morphology will be in the cast product.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- austenite
- primary dendrite
- lamellar graphite
- compacted graphite
- nodular graphite
- oxygen
- Production Engineering
- Industriell produktion
Publication and Content Type
- ref (subject category)
- art (subject category)
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