Niobium zirconium alloy introduction

Niobium zirconium alloy refers to the addition of metal niobium zirconium alloy. The main niobium zirconium alloy is Nb-1Zr alloy.

Zirconium niobium - based zirconium alloy is a kind of nuclear engineering material. The amount of niobium in the zirconium varies depending on the use in the reactor. More mature zirconium and niobium alloys include fuel element cladding material Zr-1Nb alloy, heavy water reactor pressure tube material Zr-2.5Nb-0.5Cu alloy, spacer ring material zr-2.5Nb-0.5Cu alloy between pressure tube and vessel tube.

Nb-1Zr alloy is a widely used niobium alloy, is a low strength niobium alloy, good processing and welding performance, mainly used in aerospace, atomic energy reactors, electric light source sodium lamp and other applications.

Zirconium mainly exists as solid solution in niobium alloy, and a small amount of carbides and oxides are dispersed when trace oxygen and carbon are present or trace carbon is added. The addition of zirconium to niobium can improve the strength of the alloy without affecting the plasticity and workability of the alloy. Zirconium can also improve the oxidation resistance and alkali corrosion resistance of the alloy.

Molten alloy ingots need to go through hot extrusion or hot forging blank, and then through forging, rolling and other processing, made into various profiles. Powder sintered ingot can be processed directly.

Niobium zirconium 10 alloy is composed of metal niobium with zirconium, adding zirconium in niobium can improve the strength of the alloy without affecting the plasticity and processing properties of the alloy, zirconium can also improve the alloy oxidation resistance and alkali corrosion resistance. , with the increase of its application field, more and more is also high to the requirement of niobium and zirconium alloy, has adopted the niobium zirconium processed by electron beam melting, hydrogenation, dehydrogenation and room temperature lower static pressure to the preparation of niobium, zirconium alloy using electron beam melting, due to the melting point of niobium and zirconium, niobium, the melting point of nearly three flows, the melting point of zirconium was much lower than that of niobium, So using this method will make the zirconium in the alloy volatile, leading to uneven alloying; In addition, the defects of poor grain refinement and insufficient density still exist in isostatic pressing only at room temperature, so it is necessary to improve the process.