Joseph, O O and Loto, C A and Sivaprasad, S and Ajayi, J A and Tarafder, S (2018) Comparative assessment of the fracture behaviour of micro-alloyed and API-5L X65 steels in simulated fuel grade ethanol environment. Engineering Fracture Mechanics, 189 (IF-2.151). pp. 1-12.
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Abstract
In order to fully realize the benefit of pipeline and automotive materials in fuel ethanol applications, a comprehensive understanding of their fracture behaviour is essential. Very few studies have been undertaken on fracture of materials in stress corrosion environments. This paper presents a comparative assessment of the fracture toughness, tearing modulus and widths of stretch zones for API-5L X65 steel and micro-alloyed steel (MAS). The results show that MAS exhibits a better fracture resistance than API-5L X65 steel in air and in solution. API-5L X65 in solution shows a faster crack extension than MAS-in solution. It is found that Jstr (fracture toughness derived from stretch zone geometry) obtained for the two steels exhibits a similar trend with Ji (initiation fracture toughness) which is obtained at the departure of the blunting line on their J-R curves and thus suitable for representing the initiation toughness of the two steels in solution. In general, fuel ethanol reduces fracture resistance in X65 and micro-alloyed steels.
| Item Type: | Article |
|---|---|
| Official URL/DOI: | https://doi.org/10.1016/j.engfracmech.2017.08.012 |
| Uncontrolled Keywords: | Steels,Fracture mechanics,Ductile fracture,Fuel ethanol |
| Divisions: | Material Science and Technology |
| ID Code: | 7774 |
| Deposited By: | Sahu A K |
| Deposited On: | 23 Mar 2018 12:00 |
| Last Modified: | 23 Mar 2018 12:00 |
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