| 학회 |
한국재료학회 |
| 학술대회 |
2009년 가을 (11/05 ~ 11/06, 포항공과대학교) |
| 권호 |
15권 2호 |
| 발표분야 |
제 17회 신소재 심포지엄-다공성 및 발포재료 |
| 제목 |
Processing and Mechanical Properties of Ni-Cr and Ni-Cr-Al Foams by Pack-Cementation |
| 초록 |
Open-cell Ni-Cr and Ni-Cr-Al (with gamma/gamma prime microstructure typical of Bi-base superalloys) foams are manufactured by pack-cementation at 1000degrees C, followed by homogenization at 1200C. The resulting alloyed foams retain the low relative densities (less than 3.5 wt.%). The oxidation behavior of Ni-Cr foams turns out to be identical to that of bulk Ni-Cr alloys, after taking into account the foam’s higher surface area. The room-temperature compressive behavior of the Ni-Cr and Ni-Cr-Al is compared to model predictions. Additionally, the foam creep behavior, measured between 680 and 825C in the stress range of 0.1-0.3 MPa, compared to two analytical models, namely strut compression and strut bending as high-temperature deformation modes. |
| 저자 |
David Dunand1, 최희만2
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| 소속 |
1Northwestern Univ., 2국민대 |
| 키워드 |
Foam; pack-cementation; creep; compressive test
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| E-Mail |
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