Domestic titanium alloy wire TA9 corrosion resistance/oxidation resistance

Sales of domestic titanium alloy wires in Kyoto Corrosion/Oxidation Resistance
China began research on titanium and titanium alloys in the mid-1990s and began industrial production of titanium materials and developed B alloys.
Compared with other metal materials, titanium alloy has the following advantages:
①High specific strength (tensile strength/density) (see figure), the tensile strength can reach ~/, while the density is only that of steel of.
② It has good medium-temperature strength. The operating temperature is several hundred degrees higher than that of aluminum alloy. It can still maintain the required strength at medium temperatures and can work for a long time at temperatures of ~℃.
③Good corrosion resistance. A uniform and dense oxide film is immediately formed on the surface of titanium in the atmosphere, which has the ability to resist erosion by various media. Titanium generally has good corrosion resistance in oxidizing and neutral media. However, in reducing media, such as hydrochloric acid and other solutions, titanium has poor corrosion resistance.
④Titanium alloys with good low-temperature properties and extremely low interstitial elements, such as titanium alloys, can maintain a certain plasticity at ℃.
⑤ Low elastic modulus, small thermal conductivity, no ferromagnetism.
.High hardness.
.Poor stamping properties, good thermoplasticity.
Heat-treated titanium alloys can obtain different phase compositions and structures by adjusting the heat treatment process. It is generally believed that the fine equiaxed structure has better plasticity, thermal stability and fatigue strength, and the acicular structure has higher lasting strength, creep strength and fracture toughness. The equiaxed and acicular mixed structure has better comprehensive properties.
Commonly used heat treatment methods include annealing, solution and aging treatment. Annealing is to eliminate internal stress, improve plasticity and structural stability, and obtain better comprehensive properties. Usually the annealing temperature of the alloy and (+b) alloy is selected below the (+b)rrrb phase transformation point ~ ℃. The solid solution and aging treatment is rapid cooling from the high temperature area to obtain the martensite r phase and metastable b phase, and then Insulation in the medium temperature zone decomposes these metastable phases to obtain finely dispersed second phase particles such as phases or compounds, thereby achieving the purpose of strengthening the alloy. Usually, the quenching of (+b) alloy is performed at ~℃ below the (+b)rrrb phase transformation point, and the quenching of metastable alloy is performed at ~℃ above the (+b)rrrb phase transformation point. The aging treatment temperature is generally ~℃. In addition, in order to meet the special requirements of the workpiece, metal heat treatment processes such as double annealing, isothermal annealing, b heat treatment, and deformation heat treatment are also used in industry.