The process test was carried out to explore the process parameters of electron beam welding of Nb521 material and the mechanical properties of welds at different temperatures, to obtain the welding processability evaluation of the material and accumulate data for the engineering application of the m...

Nb521 alloy is a new type of niobium-tungsten alloy, the nominal composition of Nb-5W-2Mo-1Zr, with a high melting point (2630 ℃), moderate density 8.9g/cm3), high-temperature strength (1600 ℃, Rm ≥ 100MPa), machining and welding performance and other advantages ［1,2］, is expected to replace C1...

Ta-W alloy has high high temperature strength, good ductility, weldability and excellent corrosion resistance. It is suitable for working environments such as high temperature, high pressure and corrosion resistance. It is widely used in chemical industry, aerospace, atomic energy industry and high...

Tantalum is widely used in the field of medical implant materials due to its excellent biocompatibility, corrosion resistance and good mechanical properties [1-2]. Among them, the shape of porous tantalum is similar to the structure of human bone trabeculae, which is known as trabecular metal, and i...

Ta10W is an important member of the tantalum-tungsten alloy family, its melting point is as high as 3080 ℃, the density of 16.78 ~ 16.90g/cm3, has a very good room temperature and high temperature mechanical properties, at a high temperature of 2,000 ℃, its tensile strength can still reach 100MPa, w...

Niobium and niobium alloys (including Nb521 alloy) have the characteristics of high melting point, low density, excellent high-temperature strength and specific strength, good weldability and excellent corrosion resistance, and have broad application prospects in the fields of aviation and aerospace...

Tantalum and tantalum alloys have the characteristics of high density, high melting point, corrosion resistance, excellent high temperature strength, good processability, etc., and are widely used in electronics, chemical industry, aerospace, weapons and equipment and other fields. Tantalum is a ref...

Refractory metal tungsten and its alloys have excellent properties such as high melting point, high hardness, high temperature strength, high modulus of elasticity, low coefficient of thermal expansion, good electrical conductivity and corrosion resistance, and they are widely used in cutting-edge f...

Abstract: The oxidation behaviors of tantalum-tungsten alloy with 10-20% W was investigated between temperature range of 700 to 900 ℃ exposed in air. The kinetics of Ta-W alloy was determined by TG-DTA, the characteristics of oxides were analyzed by SEM, EDS and XRD. The oxidation tes...

The Swedish chemist Anders Ekeberg first extracted element 73 - tantalum - from a mineral in 1802, and tantalum was named after its excellent corrosion resistance in acids [1]. Tantalum has superior corrosion resistance to titanium [2-4], is only affected by strong acidic and alkaline environments,...

0 Introduction Molybdenum belongs to the VIB group of elements, atomic number 42, relative atomic mass 95.95, extra-nuclear electron arrangement [Kr] 4d5 5s1, ionisation energy 7.5 eV, relative density 10.2 g/cm3 , melting point 2622, specific heat 0.28 J/(g -K), thermal conductivity 142.1W/(m -K),...

Niobium-tungsten alloys have good room temperature plasticity and can be processed into plates, rods and various complex profiles; high high-temperature strength and low density compared with other tungsten, molybdenum and tantalum alloys, which makes them refractory metal high-temperature structura...