Effect of the percentage carbon equivalent on the nodule characteristics, density and modulus of elasticity of ductile cast iron
| Autor: | N. Fatahalla, Hani Abd Al Hakim, Moenes Mohamed, Aly Abo-El-Ezz |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Nodule (geology)
Materials science Mechanical Engineering Metallurgy chemistry.chemical_element Young's modulus engineering.material Microstructure symbols.namesake chemistry Mechanics of Materials engineering symbols General Materials Science Graphite Cast iron Composite material Carbon Elastic modulus |
| Zdroj: | Journal of Materials Science. 31:4933-4937 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/bf00355883 |
| Popis: | Successful melting and Mg treatment were conducted using a vortex unit which produced spheroidal graphite (SG) Fe ingots having a percentage carbon equivalent (%CE) ranging from 3.782 to 5.240. Microstructure examination revealed graphite nodules embedded in a white matrix (unetched condition). The variation of %CE proved to have a pronounced effect on the nodule characteristics. The nodule count showed a maximum value at %CE of 4.613. For metal-mould ingots it reached a value of 1584 nodules mm−2, while for sand-mould ingots it reached a value of 970 nodules mm−2. Nodule size was found to be inversely proportional to the nodule count for both sand- and metal-mould ingots. The nodularity of all ingots was, in general, higher than 95%. The density of SG Fe was found to decrease gradually (at %CE=3.782) from 7242 to 6969 kg m−3. The modulus of elasticity (E) showed a boat-like curve having minimum values of 189 and 192 GPa for the sand and metal moulds, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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