| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
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| Symposium
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Environmental Degradation of Additively Manufactured Alloys
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| Presentation Title |
High Temperature Oxidation of Additively and Conventionally Manufactured Heat Resistant Steel: HK30Nb |
| Author(s) |
Marie Romedenne, Bruce Pint, Michael Lance, Kinga Unocic , Sebastien Dryepondt |
| On-Site Speaker (Planned) |
Marie Romedenne |
| Abstract Scope |
The electrification of vehicles will drive the need to further cut CO2 emission of medium and heavy-duty diesel engines. Stringent fuel efficiency standards will need to be achieved for example by increasing temperatures, loads and optimizing engine parts’ geometries. Therefore, materials that could withstand these harsher conditions are under investigation. Additively manufactured material HK30Nb (Fe-25Cr-20Ni-01.5Nb) is currently of interest for its higher strength between 700 and 900°C than conventionally used SiMo cast iron materials. Additive manufacturing can result in variation in the HK30Nb composition (Mn content) and grain microstructure compared to cast HK30Nb. The influence of these parameters on the high temperature oxidation and spallation behavior of HK30Nb will be discussed using high temperature exposures in dry air and flowing air + 10 % H2O at 700 and 800°C for 5,000 h.
Research sponsored by the U.S. Department of Energy, Vehicle and Technology Office.
*Corresponding author e-mail: romedennem@ornl.gov
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| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Environmental Effects, Iron and Steel |