Abstract: The high carbon niobium tungsten alloy HCNb521 sintered bars were subjected to secondary electron beam melting to control the carbon, zirconium and gas content of the alloy. The microstructure of the smelted ingot after high temperature annealing was analyzed, and the mechanical properties...

0 Preface The rail/attitude control two-component liquid rocket engine is the power core of missiles, satellites, spacecraft and other space vehicles. In order to meet the demand of high specific impulse, lightweight, long life and high reliability of the engine, the material of the thrust chamber o...

Tungsten (W) and its alloys are widely used in electronic engineering, manufacturing, aerospace, medical [1-5] and other fields due to its high density, high melting point, high thermal conductivity, high recrystallization temperature, low coefficient of thermal expansion, and high strength and hard...

possesses good modulus of elasticity, induced easy to produce bone tissue, good wettability and other characteristics, which has become the most ideal hard tissue implantation material recognized by the medical community [5-7]. The design of porous tantalum cells with millimeter-scale pore size can...

Tungsten is a refractory metal with high hardness and strength as well as good electrical conductivity and corrosion resistance, which is widely used in the fields of defense and military industry, aerospace, and medical devices [1-2]. Tungsten, which can be prepared into tungsten-copper composites...

0 Introduction The Nb521 niobium-tungsten alloy (Nb-5W-2Mo-1Zr) developed in my country is similar to the 5BMV alloy of the former Soviet Union. The 5BMV alloy was used in the manufacture of the thrust chamber of a two-element liquid rocket engine in the former Soviet Union. Under the protection of...

Molybdenum and molybdenum alloys have high melting points, good electrical and thermal conductivity, low coefficients of thermal expansion, excellent corrosion resistance and high-temperature mechanical properties, and are widely used in aerospace, metallurgy, glass, electronics and other industries...

Niobium-tungsten alloy Nb521 (Nb-5W-2Mo-1Zr) is a kind of high-temperature alloy independently developed by China, which has a high melting point, good high-temperature (1650°C) strength, and compared with refractory metals, such as tungsten, molybdenum and tantalum alloys, it has the advantages...

1 Performance of High-density Tungsten Alloy Tungsten has many excellent properties such as high melting point and high density, but its application is often limited by its brittleness. In order to change the brittleness of tungsten, a new tungsten alloy was successfully developed in 1938 internatio...

1 Introduction Accompanied by the development of aerospace technology, the quality and performance requirements for parts are also increasing. Vehicle parts often work in the high temperature and high speed airflow strong erosion of the environment, bear a very serious aerodynamic heating [1], which...

High specific gravity tungsten alloy is a kind of tungsten as the main body, adding a small amount of Ni, Fe, Cu, Co, Mn and other elements composed of alloy, its tungsten mass fraction is generally 85% ~ 98%, the density of up to 16.5 ~ 19.0g/cm3, and therefore is often referred to as a high specif...

0 Introduction With the continuous development of global nuclear energy technology, nuclear-powered ships, as an important part of future marine strategic forces, have become particularly important in terms of technological development. However, the development of domestic nuclear-powered ship techn...