Open-cell superalloy foams via the combined electrolytic-suspension route. / Smorygo, O.; Mikutski, V.; Hancharou, V. et al.
2017. Paper presented at International Powder Metallurgy Congress and Exhibition, Euro PM 2017, Milan, Italy.Research output: Contribution to conference › Paper › peer-review
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TY - CONF
T1 - Open-cell superalloy foams via the combined electrolytic-suspension route
AU - Smorygo, O.
AU - Mikutski, V.
AU - Hancharou, V.
AU - Tarusov, I.
AU - Ilyushchanka, A.
AU - Vinod Kumar, J.
AU - Sadykov, V.
PY - 2017
Y1 - 2017
N2 - Low-density open-cell nickel foams were prepared by electrolytic replication of polyurethane foam. Then, the sintered products were impregnated with the 625 superalloy powder suspension. The final foam density could be controlled by number of impregnations. Then the foams were sintered in vacuum. The foam microstructure and distribution of alloying components (Cr, Nb and Mo) were dependent on the sintering temperature, which, in its turn, effected mechanical properties of the foams (the shape of the stress-strain curve and the yield stress). Complete densification of the powder layer was attained at temperatures close to the superalloy liquidus point, i.e. at 1320-1335oC. Addition of a mixture of Ni, Cr and Mo fine powders to the superalloy powder suspension favored the powder layer densification, ensured more uniform distribution of alloying elements and improved mechanical strength.
AB - Low-density open-cell nickel foams were prepared by electrolytic replication of polyurethane foam. Then, the sintered products were impregnated with the 625 superalloy powder suspension. The final foam density could be controlled by number of impregnations. Then the foams were sintered in vacuum. The foam microstructure and distribution of alloying components (Cr, Nb and Mo) were dependent on the sintering temperature, which, in its turn, effected mechanical properties of the foams (the shape of the stress-strain curve and the yield stress). Complete densification of the powder layer was attained at temperatures close to the superalloy liquidus point, i.e. at 1320-1335oC. Addition of a mixture of Ni, Cr and Mo fine powders to the superalloy powder suspension favored the powder layer densification, ensured more uniform distribution of alloying elements and improved mechanical strength.
UR - http://www.scopus.com/inward/record.url?scp=85056512013&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:85056512013
T2 - International Powder Metallurgy Congress and Exhibition, Euro PM 2017
Y2 - 1 October 2017 through 4 October 2017
ER -
ID: 25389780