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Preliminary communication

Thermal conductivity of nickel superalloy MAR-M247

P. Jonšta ; Vítkovice Heavy Machinery a.s., Ostrava, Czech Republic
P. Koštial ; VŠB-TU Ostrava, FMME, Ostrava, Czech Republic
Z. Jonšta ; VŠB-TU Ostrava, FMME, Ostrava, Czech Republic
I. Vlčková ; RMTSC, Material & Metallurgical Research Ltd., Ostrava, remote site VÚHŽ a.s. Czech Republic
T. Kulová ; VŠB-TU Ostrava, FMME, Ostrava, Czech Republic

Full text: english pdf 205 Kb

page 420-422

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The paper presents the narrow connection between γ’ phase dissolving and values of thermal conductivity. In annealing process the free space among γ’ particles (blocks) changes in certain cycle from fine to rough and back to fine. This is accompanied by decrease and subsequent increase of thermal conductivity as well as the sample density. The results of thermal conductivity coarse are supported by image analysis.


nickel; superalloy; structure-phase; thermal conductivity; heat transport

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