It is determined that disperse carbide phase ensures efficient strengthening of a brazed joint
and possibility of occurrence of plastic strain over fusion line in the area seam metal-base alloy.
Chromium and aluminum ensure protection of a brazed joint
(BJ) against oxidation; titanium, aluminum and tantalum define formation of [gamma]'-phase, which hardens matrix of nickel alloy; carbon, zirconium and boron enable precipitation of hardening phases over grain boundaries.
Application of repair brazing instead of argon arc welding with tungsten electrode of components of HTA is based on the effect of activated diffusion interaction between particles of a composite brazing alloy and surfaces to be joined in local areas of the parts, which is the result of contact melting of surfaces of particles and walls of the part by low-melting component of the brazing alloy and further heat treatment of a brazed joint
at the temperature, which is by 100-120 [degrees]C lower than maximum temperature of isothermal brazing .
Periodic flush testing of rails and daily sectioning of a random brazed joint
followed by inspection through a microscope are also performed.
Interface structure and mechanical properties of the brazed joint
of TiC-cermet and steel.
The cooling of the brazed joint
is characterised by the solidification of the solid solution based on equal ([gamma]-phase) in the form of primary grains with a higher melting point.
The joints can be made as quickly as a brazed joint
, and unlike the joints used in 1991 there were no leaks when the piping was down to temperature.
But design director Helmuth Schrader felt the hand-finished brazed joint
gives a higher quality appearance.
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The main aim of the method reduces amorphised foils as the brazing alloy is the formation of the microstructure and mechanical properties of the brazed joint
is equivalent to those of the brazed alloy as a result of its long-term isothermal holding.
A brazed joint
is much stronger than a soldered joint and is more resistant to fatigue, corrosion and extreme temperature changes.
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