NbZr alloy
Overview
Niobium-zirconium alloy is an alloy composed of metal zirconium added to metal niobium. The main niobium-zirconium alloy is NbZr1. The addition of zirconium to niobium can improve the strength of the alloy without affecting the plasticity and processing properties of the alloy, and zirconium can also improve the oxidation resistance and alkali metal corrosion resistance of the alloy.
Characteristic
Zirconium mainly exists in solid solution in niobium alloy, when there is trace oxygen and carbon, or add trace carbon, a small amount of carbide and oxide dispersion precipitation. The addition of zirconium to niobium can improve the strength of the alloy without affecting the plasticity and processing properties of the alloy, and zirconium can also improve the oxidation resistance and alkali metal corrosion resistance of the alloy.
Application
NbZr1 alloy is the most widely used niobium alloy. It is a low strength niobium alloy, processing and welding performance is good, mainly used in aerospace, atomic energy reactors, new electric light source sodium lamp and other applications.
Preparation
According to the requirements of performance and purity of interstice impurities (C, O, N), NbZr1 alloy is prepared by consumable arc furnace, electron beam furnace or both. For products with lower purity requirements, alloy ingot can also be formed by mixing niobium powder and zirconium powder.
Typical material
| Nb | Zr | Ti | C | H | O | N |
|---|---|---|---|---|---|---|
| Balance | 0.80-1.20 | ≤0.02 | ≤0.01 | ≤0.0015 | ≤0.015 | ≤0.01 |
| Ta | Fe | Si | W | Ni | Mo | Cr |
| ≤0.10 | ≤0.005 | ≤0.005 | ≤0.03 | ≤0.005 | ≤0.01 | ≤0.002 |
Mechanical property
| Material | Condition | Rm MPa |
Rp 0.2% MPa |
Elongation A25% |
|---|---|---|---|---|
| NbZr1 | Stress relief annealing |
≥250 | ≥150 | ≥20 |
| Recrystallization annealing |
≥195 | ≥125 | ≥25 |
Available Process
Cold worked and annealed
Product forms
Capillary tube
- ◎ OD 0.50 ~ 3.0 mm
- ◎ WT 0.05 ~ 0.5 mm
Precision seamless tube
- ◎ OD 3.0 ~ 100 mm
- ◎ WT 0.10 ~ 10.0 mm
Service
- ◎ Precision cutting
- ◎ Tube surface treatment, like ID surface super mirror polishing, best level could reach Ra0.0015um
- ◎ Tube deep processing, like coiling, bending, end forming, body forming, laser processing, various needles processing, built to drawing and sample, etc.