A creep-resistant additively manufactured Al-Ce-Ni-Mn alloy
Existing additively manufactured aluminum alloys exhibit poor creep resistance due to coarsening of their strengthening phases and refined grain structures. In this paper, we report on a novel additively manufactured Al-10.5Ce-3.1Ni-1.2Mn wt.% alloy which displays excellent creep resistance relative...
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| Veröffentlicht in: | Acta materialia 2022-04, Vol.227, p.117699, Article 117699 |
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| creator | Michi, Richard A. Sisco, Kevin Bahl, Sumit Yang, Ying Poplawsky, Jonathan D. Allard, Lawrence F. Dehoff, Ryan R. Plotkowski, Alex Shyam, Amit |
| description | Existing additively manufactured aluminum alloys exhibit poor creep resistance due to coarsening of their strengthening phases and refined grain structures. In this paper, we report on a novel additively manufactured Al-10.5Ce-3.1Ni-1.2Mn wt.% alloy which displays excellent creep resistance relative to cast high-temperature aluminum alloys at 300–400 °C. The creep resistance of this alloy is attributed to a high volume fraction (∼35%) of submicron intermetallic strengthening phases which are coarsening-resistant for hundreds of hours at 350 °C. The results herein demonstrate that additive manufacturing provides opportunities for development of creep-resistant aluminum alloys that may be used in bulk form in the 250–400 °C temperature range. Pathways for further development of such alloys are identified.
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| doi_str_mv | 10.1016/j.actamat.2022.117699 |
| format | Article |
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| subjects | Additive manufacturing Al-Ce-Ni-Mn alloy Aluminum alloys Creep High-temperature materials MATERIALS SCIENCE |
| title | A creep-resistant additively manufactured Al-Ce-Ni-Mn alloy |
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