Print Email Facebook Twitter Fractographic examination of specimens from lEPG TA 31 creep tests Title Fractographic examination of specimens from lEPG TA 31 creep tests Author Wanhill, R.J.H. Institution National Aerospace Laboratory NLR Date 1994-08-16 Abstract The NLR examined by fractography nine ruptured creep specimens supplied by EGT. Three specimens had been tested at 600° C and six specimens had been tested at 650° C. Internal (creep) cracking occured by transgranular microvoid coalescence, which is likely to be characteristic for standard heat treatment Inconel 718. One specimen tested at 600° C failed by dwell cracking from a side surface, and this probably resulted in the much lower elongation and reduction in area as compared with the other two specimens. One specimen tested at 650° C showed relatively large internal microvoids. This behaviour is possibly related to the relatively high reduction in area as compared with the other five specimens. Subject Creep rupture strengthCreep testsFractographyHigh temperature testsInclusionsInconel (trademark)Intergranular corrosionLife (durability)MicrostructureTurbine wheelsVoids To reference this document use: http://resolver.tudelft.nl/uuid:c22f48f9-c72c-4069-b4ad-872c6f745dca Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR Technical Publication TP 94351 U Part of collection Aerospace Engineering Reports Document type report Rights (c)1994 National Aerospace Laboratory NLR Files PDF 94351.pdf 13.24 MB Close viewer /islandora/object/uuid:c22f48f9-c72c-4069-b4ad-872c6f745dca/datastream/OBJ/view