|Reference : Microporosity formation in nickel-base superalloys in relation to their solidification s...|
|Scientific congresses and symposiums : Paper published in a book|
|Engineering, computing & technology : Materials science & engineering|
Engineering, computing & technology : Chemical engineering
|Microporosity formation in nickel-base superalloys in relation to their solidification sequence|
|Lecomte-Beckers, Jacqueline [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]|
|Lamberigts, M. [ > > ]|
|Proceedings of the International Conference of High Temperature Alloys for Gas Turbine and Other Applications|
|International Conference of High Temperature Alloys for Gas Turbine and Other Applications|
|[en] microporosity formation ; turbine blades ; differential thermal analysi ; solidification feature ; foundry|
|[en] This work is aimed at showing how the proneness of superalloys to microporosity formation can be estimated by the tsP* pararneter which makes use of various solidification features. The latter can be derived from quantitative differential thermal analysis (DTA) resuits through the original method described in the text. The technique was applied to two IN 100 master meUs of distinct grades (virgin or revert) which had been showrt to behave very differently in the foundry. It led to ascribe the poorer performance of the revert meit to its particular solidification sequence leading higher
dendrite tortuosity and lesser residual liquid fluidity.
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