"Ostrava, CZ" . "METAL 2012" . "RIV/26316919:_____/12:#0000369" . . "Investigation of gamma prime precipitate morphology development in creep exposed nickel base superalloy"@en . . "Investigation of gamma prime precipitate morphology development in creep exposed nickel base superalloy" . "Zrn\u00EDk, Jozef" . . . . "Investigation of gamma prime precipitate morphology development in creep exposed nickel base superalloy"@en . "1"^^ . . "TANGER Ltd." . "4"^^ . . . . "Nickel base superalloys are widely used for heavy duty gas turbine buckets, where stability of microstructure is an important factor The creep degraded nickel base single crystal superalloy CMSX-4 of two axial orientations [001] and [111] was investigated with aim to assess the structure degradation. Constant load creep tests were conducted in the stress/temperature ranges of 250 \u2013 780 MPa / 750 \u2013 950\u00B0C resulting in rupture time variation from 50 to 4000 hours. A combination of scanning electron microscopy (SEM) and non-destructive small-angle neutron scattering method (SANS) was used to investigate the directional coarsening (rafting) of the gamma prime (\u03B3') precipitates in relation to the stress and temperature applied as well as to the initial crystallographic orientation of the specimens. The SANS results are discussed in terms of the correlation with the raft development, the axial orientation of specimen, the creep parameters and the mechanical properties." . . . "7"^^ . "978-80-87294-31-4" . . "Brno,CZ" . . "Nickel base superalloys are widely used for heavy duty gas turbine buckets, where stability of microstructure is an important factor The creep degraded nickel base single crystal superalloy CMSX-4 of two axial orientations [001] and [111] was investigated with aim to assess the structure degradation. Constant load creep tests were conducted in the stress/temperature ranges of 250 \u2013 780 MPa / 750 \u2013 950\u00B0C resulting in rupture time variation from 50 to 4000 hours. A combination of scanning electron microscopy (SEM) and non-destructive small-angle neutron scattering method (SANS) was used to investigate the directional coarsening (rafting) of the gamma prime (\u03B3') precipitates in relation to the stress and temperature applied as well as to the initial crystallographic orientation of the specimens. The SANS results are discussed in terms of the correlation with the raft development, the axial orientation of specimen, the creep parameters and the mechanical properties."@en . "http://www.metal2012.com/files/proceedings/02/reports/370.pdf" . . "142901" . . . . "RIV/26316919:_____/12:#0000369!RIV13-MPO-26316919" . . "P(FR-TI1/415)" . "[7D6918D1C984]" . "Ni base superalloy, single crystal, creep, structure, small angle neutron scattering."@en . "2012-05-23+02:00"^^ . . "Investigation of gamma prime precipitate morphology development in creep exposed nickel base superalloy" .