Material Introduction
Molybdenum Lanthanum Yttrium Alloy
Material Introduction
The main component of molybdenum lanthanum yttrium alloys is Mo-(1.8-2.0)% La2O3 (0.4-0. 5)% Y2O3; that is, rare earth oxides La2O3 and Y2O3 are added to pure molybdenum. The uniformly dispersed La2O3 and Y2O3 particles after deformation processing have a strong pinning effect on dislocation, meaning the molybdenum alloy has outstanding high-temperature mechanical properties.
Specifications and Performance
|
Material |
Bar (mm) |
Plate (mm)/span> |
|
Molybdenum lanthanum yttrium alloy |
Φ 1~150 |
0.5~50 |
|
Material |
Tensile strength at room temperature/MPa |
Elongation at room temperature |
Tensile strength at 1000°C/MPa |
1000℃ elongation |
|
Molybdenum lanthanum yttrium alloy |
660 |
30% |
260 |
20% |
|
Notes |
30mm diameter bar |
|||
Fabrication Process
By means of molybdenum alloy powder preparation, isostatic pressing, high-temperature sintering, and thermal deformation processing, molybdenum-lanthanum-yttrium alloys have a density that lies close to the theoretical density, thus providing optimal high-temperature performance.
Advantage
Adding the rare earth elements La2O3 and Y2O3 not only increases the recrystallization temperature and high-temperature creep resistance of molybdenum, but also significantly reduces the plastic-brittle transition temperature, increases ductility, and improves room-temperature brittleness and high-temperature sag resistance.
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