[article]
| Titre : |
Effect of oxygen potential on crack growth in alloys for advanced energy systems |
| Type de document : |
texte imprimé |
| Auteurs : |
Julian K. Benz, Auteur ; Ji Hyun Kim, Auteur ; Ronald G. Ballinger, Auteur |
| Année de publication : |
2011 |
| Article en page(s) : |
07 p. |
| Note générale : |
Génie Mécanique |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Chromium alloys Fatigue cracks Iron Nickel Oxygen |
| Index. décimale : |
620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux |
| Résumé : |
The effect of oxygen partial pressure on crack growth rates in Alloy 617 has been studied using both static and fatigue loadings at 650°C over the oxygen partial pressure range 10−19−10−3 atm. Tests were conducted at either the constant stress intensity factor K for static conditions or the constant DeltaK in fatigue. Oxygen concentration was measured on both the inlet and outlet of the test retort as well as in situ with a probe located directly at the specimen surface. For fatigue loading the crack path was observed to be transgranular but crystallographic with a decreasing growth rate as the oxygen concentration decreased. However, for static loading the crack path shifted to intergranular at the same Kmax (fatigue) and exhibited what appears to be an increasing crack growth rate with decreasing oxygen concentration. |
| DEWEY : |
620.1 |
| ISSN : |
0742-4795 |
| En ligne : |
http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JETPEZ00013 [...] |
in Transactions of the ASME . Journal of engineering for gas turbines and power > Vol. 132 N° 10 (Octobre 2010) . - 07 p.
[article] Effect of oxygen potential on crack growth in alloys for advanced energy systems [texte imprimé] / Julian K. Benz, Auteur ; Ji Hyun Kim, Auteur ; Ronald G. Ballinger, Auteur . - 2011 . - 07 p. Génie Mécanique Langues : Anglais ( eng) in Transactions of the ASME . Journal of engineering for gas turbines and power > Vol. 132 N° 10 (Octobre 2010) . - 07 p.
| Mots-clés : |
Chromium alloys Fatigue cracks Iron Nickel Oxygen |
| Index. décimale : |
620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux |
| Résumé : |
The effect of oxygen partial pressure on crack growth rates in Alloy 617 has been studied using both static and fatigue loadings at 650°C over the oxygen partial pressure range 10−19−10−3 atm. Tests were conducted at either the constant stress intensity factor K for static conditions or the constant DeltaK in fatigue. Oxygen concentration was measured on both the inlet and outlet of the test retort as well as in situ with a probe located directly at the specimen surface. For fatigue loading the crack path was observed to be transgranular but crystallographic with a decreasing growth rate as the oxygen concentration decreased. However, for static loading the crack path shifted to intergranular at the same Kmax (fatigue) and exhibited what appears to be an increasing crack growth rate with decreasing oxygen concentration. |
| DEWEY : |
620.1 |
| ISSN : |
0742-4795 |
| En ligne : |
http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JETPEZ00013 [...] |
|
Ajouter le résultat dans votre panier Faire une suggestion Affiner la rechercheEffect of oxygen potential on crack growth in alloys for advanced energy systems in Transactions of the ASME . Journal of engineering for gas turbines and power, Vol. 132 N° 10 (Octobre 2010)
