Annealing, quenching and heat treatment of tantalum
The company Electrocentury-steel offers at the prices of manufacturer products of tantalum and tantalum alloys. The supplier must deliver the metal at any address specified by the consumer.
Peculiarities of heat treatment of tantalum
Tantalum exhibits high reactivity towards interstitials such as hydrogen, nitrogen and oxygen. It can also react with hydrocarbons. Its recrystallization temperature range from 900 ° C to 1450 °C. a Vacuum or dry inert gases are most suitable as of the atmosphere of the heat treatment. The duration of the heat treatment may depend on the equipment though
lubricants prior to heat treatment should be removed completely. Otherwise they can react with the tantalum and cause embrittlement of the material.
To control the mechanical properties of pure and alloyed tantalum requires adjustment of the microstructure through careful control of the thermomechanical processing. In this study for the characterization of the microstructure was used the curves x-ray of the swing and further understanding of the mechanisms of annealing.
The plate material obtained from the doped tantalum, showed a stage of annealing at 300 ° C higher than pure tantalum. Activation energy, calculated according to the rocking curve ranged from one-half to one-third of the activation energy of self-diffusion.
To purchase tantalum at prices from the manufacturer, the company offers Electrocentury-steel. The supplier delivers products to the address specified by the consumer.
Structural change in tantalum with the heat treatment
To control the texture and grain structure in unalloyed tantalum is difficult.
Sources of heterogeneous structure are chemistry of the ingots, grain size of the ingot and mechanical processing. The introduction of high levels of plastic strain by rolling and forging prior to annealing only partially homogeneorum grain structure.
The heterogeneous structure of grains in the components give rise to local changes in mechanical properties and are potential sources of unexpected outages.
Annealing repulsion forged tantalum shows that significant differences in grain size, size distribution, and morphology exists in the microstructures obtained after annealing of wrought tantalum. In the evaluation cycle effects of intermediate annealing (before forging) on the texture and the formation of microstructure in forged and annealed tantalum plates are used for x-ray crystallography.
The influence of annealing modes were carried out on the tantalum mixed with 2.5% tungsten. The alloy obtained by the method of vacuum arc remelting of ingots with an electron beam.
Chemical composition of tantalum are given in the table (the rest Tantal):
Cast ingot after heat treatment was subjected to cold rolling at mnogoletie mill with lubrication of the work rolls.
At the initial stage of annealing of pure tantalum in the temperature range from 750 to 900 °C, the texturing of the structure is reduced. However, at annealing temperatures above 1100 ° C there is a noticeable grain growth, which deteriorates the subsequent workability of tantalum.
Thus, to carry out the heat treatment of the tantalum is impractical.
The company Electrocentury-steel offers to acquire at producer prices of tantalum and its alloys. The supplier ensures the delivery of products to the address specified by the consumer.