EFFECT OF AUSTEMPERING TIME ON THE WORKABILITY AND MECHANICAL PROPERTIES OF THE DUCTILE IRON | ||||
| ERJ. Engineering Research Journal | ||||
| Article 5, Volume 33, Issue 1, January 2010, Page 31-38 PDF (631.29 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2010.67302 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. Shaker1; H. Abd El-Hafez2 | ||||
| 1Suez Canal University, Faculty of Engineering, 42523 Port Said, Egypt | ||||
| 2Omar Al-Mokhtar University, Faculty of Engineering, Tobruk, Libya | ||||
| Abstract | ||||
| The present work was carried out to study the influence of austempering and austempering time on the workability and the mechanical properties of the ductile iron (DI). The results show that, the austempering process increases tensile strength and hardness as well as the workability. Also, the austempering process decreases the ductility and fracture toughness of the ductile iron. Moreover, the effect of austempering time on the mechanical properties was evaluated. It has a slight effect on strength and hardness whereas it has no effect on the fracture toughness. On the other hand, the workability limits are improved with the increase the austempering time. Although the austempered ductile iron has a lower ductility, it still has good toughness. The ductility was improved when the austempering time within the range from 30 to 60 minutes; however it was slight affected above 60 minutes. | ||||
| Keywords | ||||
| Austempering; Ductile iron; Workability; Strength; Toughness | ||||
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