Precipitation in NiMoAl in-situ composite
Directionally solidified eutectic superalloys based on the Ni-Mo-Al system are expected to withstand temperatures that are 55 C higher than the heat resistance limit of the best superalloys currently used in airacraft engines. This makes the Ni-Mo-Al system a promising gas turbine blade material. Pr...
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| Veröffentlicht in: | Scripta metallurgica 1983-09, Vol.17 (9), p.1049-1052 |
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| container_title | Scripta metallurgica |
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| creator | Sriramamurthy, A.M. Banerjee, D. Tewari, S.N. |
| description | Directionally solidified eutectic superalloys based on the Ni-Mo-Al system are expected to withstand temperatures that are 55 C higher than the heat resistance limit of the best superalloys currently used in airacraft engines. This makes the Ni-Mo-Al system a promising gas turbine blade material. Precipitates in a Ni-33Mo-5.7Al eutectic alloy are examined here in the directionally solidified condition and also after a gamma-prime solution treatment and aging. It is found that Ni(x)Mo precipitates are present in both directionally solidified specimens and specimens aged at 1000 C for 2 hr. These precipitates are, however, metastable with respect to pure Mo precipitates. In directionally solidified specimens that have been solution-treated and aged, N(x)Mo precipitates are not observed and only elliptical plate-like Mo precipitates are present. |
| doi_str_mv | 10.1016/0036-9748(83)90451-9 |
| format | Article |
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This makes the Ni-Mo-Al system a promising gas turbine blade material. Precipitates in a Ni-33Mo-5.7Al eutectic alloy are examined here in the directionally solidified condition and also after a gamma-prime solution treatment and aging. It is found that Ni(x)Mo precipitates are present in both directionally solidified specimens and specimens aged at 1000 C for 2 hr. These precipitates are, however, metastable with respect to pure Mo precipitates. 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| ispartof | Scripta metallurgica, 1983-09, Vol.17 (9), p.1049-1052 |
| issn | 0036-9748 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Metals, semimetals and alloys Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics Specific materials Treatment of materials and its effects on microstructure and properties |
| title | Precipitation in NiMoAl in-situ composite |
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