As an important refractory metallic material, tungsten has important applications in many fields due to its high melting point, high thermal conductivity, low vapor pressure, and resistance to irradiation damage, and it is considered to be one of the most promising candidates for fusion reactors [1-...

0 Introduction Molybdenum-tungsten alloy is an alloy composed of molybdenum and tungsten. Molybdenum and tungsten are elements of the same family, with the same atomic radius, belonging to the same body-centered cubic lattice, with little difference in lattice constants, and can form a uniform solid...

1 Introduction Ta-10W alloy is a rare metal alloy material with high density, high melting point and high strength. It has high high-temperature strength, good ductility, weldability and excellent corrosion resistance. It is suitable for working environments such as high temperature, high pressure a...

Abstract: The welds of the Nb521 alloy transition connection ring and the nozzle body cracked and leaked during the vibration test after the hot test. The mechanism of the welding cracks was analyzed by macroscopic, scanning electron microscope fracture analysis, energy spectrum and XRD analysis. It...

Refractory metal refers to metal materials with melting point greater than 2000℃, mainly including tungsten, molybdenum, tantalum, niobium, rhenium, vanadium and other six metal elements, as well as alloy materials based on the six metal elements [1]. Due to the high temperature performance, creep r...

Acetabular bone defects are a common orthopedic problem whose main etiologies include trauma, infection, tumors, and various congenital diseases [1]. This bone defect poses a great challenge to artificial total hip replacement surgery, especially in acetabular reconstruction the key to successful su...

Tungsten is an important refractory metal with the characteristics of high melting point, high density, high strength, good thermal conductivity and low thermal expansion coefficient. It is widely used in aerospace, military weapons, electronics and nuclear industries [1,2]. In the International The...

Abstract: Tantalum-based alloys have become one of the important candidate materials for high temperature structural parts in the aerospace field due to their high melting point and good high temperature strength, but poor high temperature oxidation resistance is the key problem restricting their ap...

Refractory metals are widely used in many fields such as aerospace, defense and military and nuclear power industries due to their high melting points, excellent high temperature resistance, corrosion resistance and radiation resistance [1]. The application of tungsten and tantalum in the electric l...

0 Introduction 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 ind...

Abstract: This paper introduces the research progress of additive manufacturing of pure tungsten, high-density tungsten alloys and W-Cu composites from the aspects of forming process and microstructure of formed parts, and introduces the application and main problems of additive manufacturing of tun...

1 Introduction In recent years, tantalum metal is widely used in aerospace, defense, chemical industry and other fields due to its high melting point and low vapor pressure [1]. In addition, tantalum and its alloys have been increasingly used in 3D printing of medical human implants due to its excel...