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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions
Published on: June 13, 2015
Mo-Si-B alloys for ultrahigh-temperature structural applications.
1Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
Advanced Materials (Deerfield Beach, Fla.)
|June 20, 2012
Summary
Scientists are developing advanced molybdenum-silicon-boron (Mo-Si-B) alloys for high-temperature applications. These materials offer potential to outperform nickel-base superalloys in demanding environments like gas-turbine engines.
Area of Science:
- Materials Science
- Metallurgy
- Aerospace Engineering
Background:
- The development of gas-turbine engines is limited by the high-temperature performance of existing materials.
- Nickel-base superalloys operate near their melting point (~1100 °C), restricting further advancements.
- Higher operating temperatures require novel material solutions.
Purpose of the Study:
- To explore molybdenum-silicon-boron (Mo-Si-B) alloys as potential high-temperature structural materials.
- To investigate the processing, microstructure, and mechanical properties of Mo-Si-B alloys.
- To optimize Mo-Si-B alloy microstructures for elevated-temperature applications.
Main Methods:
- Processing of Mo-Si-B alloys.
- Characterization of alloy nano/microstructures.
- Evaluation of mechanical properties at elevated temperatures.
Main Results:
- Mo-Si-B alloys exhibit potential for higher operating temperatures compared to nickel-base superalloys.
- Processing and microstructure control are key to achieving desired mechanical properties.
- Optimization strategies are identified for enhancing performance.
Conclusions:
- Mo-Si-B alloys are promising candidates for next-generation high-temperature structural applications.
- Further research can enable Mo-Si-B alloys to compete with nickel-base superalloys in demanding environments.
- Advancements in materials science are crucial for aerospace and energy sectors.
