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High-throughput nanoindentation mapping of cast Inconel™718 nickelbased superalloy: influence of the Nb concentration(3)
Regarding the reduced elastic modulus, Fig. 5.d, e and f, the values did not follow the trend observed in the hardness maps (Fig. 5.a-c) and they appear to be constant for each grain and less sensitive to chemical segregations at the den...Views -
High-throughput nanoindentation mapping of cast Inconel™718 nickelbased superalloy: influence of the Nb concentration(2)
The alloy was heat treated to three different temper conditions: i.Solubilisation (S): 965 ºC for 1 hour followed by oil quenching. ii.Peak aging precipitation (P): following solubilisation treatment, 720 ºC during 8 h followed by 2 h ...Views -
High-throughput nanoindentation mapping of cast IN718 nickelbased superalloy: influence of the Nb concentration(1)
Abstract A high-throughput correlative study of the local mechanical properties, chemical composition and crystallographic orientation has been carried out in selected areas of cast Inconel 718 specimens subjected to three different...Views -
Geometry of Remeltings and Efficiency of the Surface Remelting Process Applied to Cobalt Alloy Castings(2)
Geometry of remeltings Geometry of the obtained surface remeltings was examined on a cross-section perpendicular to the longitudinal axis of remeltings (Fig. 1). Specimens were cut on the metallographic cut-off machine Labotom 3 of Stru...Views -
Geometry of Remeltings and Efficiency of the Surface Remelting Process Applied to Cobalt Alloy Castings(1)
The paper summarises results of measurements of remelting area geometry, thermal efficiency and melting efficiency characterising the surface remelting process applied to castings of MAR-M-509 cobalt alloy. The remelting process was carr...Views -
Technology of laser repair welding of nickel superalloy inner flaps of jet engine (2)
Fixtures are designed to guide and locate the moving tool and also to accommodate several assemblies according to the size of the component. The stator bladeassemblies can be welded using a different way as well in which the weld procedu...Views -
Technology of laser repair welding of nickel superalloy inner flaps of jet(1)
SUPER ALLOYSuper alloy is a special kind of alloy having some characteristic properties such as highmechanical strength, resistance to Creep, excellent surface stability, corrosion resistant(usually provided by Chromium and Aluminiu...Views -
Gas turbine castings (2)
In Aerospace One of the most prevailing components in the aerospace equipment that used investment casting process to produce superalloy castings is used in Jet engines. Fig. 33 (a) and (b) shows the layout of the Jet engine, which consi...Views -
Gas turbine castings (1)
Gas turbine blades have to resist severe conditions such as elevated temperatures, high centrifugal forces and oxidation. Nowadays directional solidification (DS) and single crystal (SX) methods are used to cast the blades because conven...Views -
The influence of casting factors on castings(2)
Secondary Gamma Prime Increased heat inputs, in terms of higher pouring temperature and mold temperature, result in reduced particle size of secondary gamma prime. The level of vacuum and the number of shell coats affect the morphology o...Views -
The influence of casting factors on castings(1)
It is widely believed that there is a need for a better correlation between casting and microstructure of Ni-superalloys.Generally, the microstructure and properties of investment castings are influenced by the following parameters: 1.Su...Views -
Investment casting
Investment casting Development of new blade alloys to achieve high temperature performance has required parallel development in alloy processing. Before the 1940s, gas turbine engine blades were iron-based alloys through cold wrought. In...Views