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.