Girdwood, RBEvans, RW2007-02-062007-06-072007-02-062007-06-071996Girdwood, RB and Evans, RW. 1996. Recovery of creep properties of the nickel-base superalloy nimonic 105. International Journal of Pressure Vessels and Piping, vol 66, 3 January, pp 141-1530308-0161http://hdl.handle.net/10204/1559http://hdl.handle.net/10204/1559Uniaxial constant stress creep tests were performed on the wrought nickel-base superalloy Nimonic 105. Entire creep curves were recorded and curve shapes analysed using the Theta Projection Concept. Rejuventive procedures were applied to pre-crept samples and creep recovery quantitatively assessed. Microstructural damage occurring during the creep of Nimonic 105 was studied. Creep strength is lost by the coarsening of the precipitate and grain boundary carbides. The Theta Projection Concept relates damage to strain using a Kachanov model. Damage accumulation can be measured and any rejuvenation procedure can be assessed for effectiveness by curve shape analysis. It is found that complete re-solution heat treatment is able to recover the microstructure and, on re-testing, significant creep curve recovery is observed. An additional heat treatment was performed under hydrostatic pressure of 100MPa in argon to remove cavities. Complete recovery of the creep curve was achieved even when this procedure was applied late in the tertiary stage of creep.930246 bytesapplication/pdfenCopyright: 1996 Elsevier Science LtdNickel base superalloy nimonic 105Thermal stressesCreep curvesMechanical engineeringMechanical stressesThermal stressesArticleGirdwood, R., & Evans, R. (1996). Recovery of creep properties of the nickel-base superalloy nimonic 105. http://hdl.handle.net/10204/1559Girdwood, RB, and RW Evans "Recovery of creep properties of the nickel-base superalloy nimonic 105." (1996) http://hdl.handle.net/10204/1559Girdwood R, Evans R. Recovery of creep properties of the nickel-base superalloy nimonic 105. 1996; http://hdl.handle.net/10204/1559.TY - Article AU - Girdwood, RB AU - Evans, RW AB - Uniaxial constant stress creep tests were performed on the wrought nickel-base superalloy Nimonic 105. Entire creep curves were recorded and curve shapes analysed using the Theta Projection Concept. Rejuventive procedures were applied to pre-crept samples and creep recovery quantitatively assessed. Microstructural damage occurring during the creep of Nimonic 105 was studied. Creep strength is lost by the coarsening of the precipitate and grain boundary carbides. The Theta Projection Concept relates damage to strain using a Kachanov model. Damage accumulation can be measured and any rejuvenation procedure can be assessed for effectiveness by curve shape analysis. It is found that complete re-solution heat treatment is able to recover the microstructure and, on re-testing, significant creep curve recovery is observed. An additional heat treatment was performed under hydrostatic pressure of 100MPa in argon to remove cavities. Complete recovery of the creep curve was achieved even when this procedure was applied late in the tertiary stage of creep. DA - 1996 DB - ResearchSpace DP - CSIR KW - Nickel base superalloy nimonic 105 KW - Thermal stresses KW - Creep curves KW - Mechanical engineering KW - Mechanical stresses KW - Thermal stresses LK - https://researchspace.csir.co.za PY - 1996 SM - 0308-0161 T1 - Recovery of creep properties of the nickel-base superalloy nimonic 105 TI - Recovery of creep properties of the nickel-base superalloy nimonic 105 UR - http://hdl.handle.net/10204/1559 ER -