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| Author | Khalil-Allafi, J.; Amin-Ahmadi, B. | ||||
| Title | Effect of mold hardness on microstructure and contraction porosity in ductile cast iron | Type | A1 Journal article | ||
Year  |
2011 | Publication | Journal of iron and steel research international | Abbreviated Journal | J Iron Steel Res Int |
| Volume | 18 | Issue | 4 | Pages | 44-47 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
| Abstract | The effect of mold hardness on the microstructure of ductile iron and the contraction porosity was investigated. Molds with different hardnesses (0.41, 0.48, 0.55, 0.62 MPa) and a sand mold prepared by Co2 method were used. The influence of silicon content on the induced expansion pressure owing to the formation of graphite was also investigated. The contraction during solidification can be compensated by an induced expansion owing to the graphite relief when the hardness of mold increases; therefore, the possibility of achieving a sound product without using any riser increases. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | Publication Date | 2011-05-01 | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1006-706X; | ISBN | Additional Links | UA library record | |
| Impact Factor | 0.836 | Times cited | 1 | Open Access | |
| Notes | Approved | Most recent IF: 0.836; 2011 IF: 0.213 | |||
| Call Number | UA @ lucian @ c:irua:122044 | Serial | 823 | ||
| Permanent link to this record | |||||
| Author | Khalil-Allafi, J.; Amin-Ahmadi, B. | ||||
| Title | Influence of mold preheating and silicon content on microstructure and casting properties of ductile iron in permanent mold | Type | A1 Journal article | ||
| Year |
2011 | Publication | Journal of iron and steel research international | Abbreviated Journal | J Iron Steel Res Int |
| Volume | 18 | Issue | 3 | Pages | 34-39 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
| Abstract | The effects of the mold preheating and the silicon content of ductile iron on the percentage of carbides, graphite nodule counts and shrinkage volume were investigated. The results showed that the percentage of carbides and the shrinkage volume decreased when the mold preheating increased. The ductile iron with the carbon equivalent of 4.45% and the silicon content of 2.5% without any porosity defects was achieved when the mold preheating was 450 °C. Increasing the silicon content in the range of 2.1%3.3% led to the increase in graphite nodule count and graphite size and the decrease in percentage of carbides. It is due to the increase in induced expansion pressure during the graphite formation with the increasing of silicon content. The suitable condition for casting a sound product of ductile iron without the riser at the mold preheating temperature of 300 °C is the silicon content of 3.3% and carbon equivalent of 4.7%. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | Publication Date | 2011-03-28 | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1006-706X; | ISBN | Additional Links | UA library record | |
| Impact Factor | 0.836 | Times cited | 3 | Open Access | |
| Notes | Approved | Most recent IF: 0.836; 2011 IF: 0.213 | |||
| Call Number | UA @ lucian @ c:irua:122043 | Serial | 1629 | ||
| Permanent link to this record | |||||