dispersion hardening


Also found in: Wikipedia.
Related to dispersion hardening: overaging, dispersion strengthening

dispersion hardening

n
(Metallurgy) the strengthening of an alloy as a result of the presence of fine particles in the lattice
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The complex brazing alloy 20%#1+20% HC12+60% Rene-12 made it possible to produce in the ZhS6U alloy joints in gaps with the width of 100--800 [micro]m whose structure underwent the dispersion hardening as a result of the [gamma]'-phase (Fig.
The estimates of the parameters of the structural mismatch a for the solidified metal of the brazed joints produced with the two types of brazing alloys show that when using the brazing alloy at 20%#1+20% HC12+60% Rene-40 there is a slight dispersion hardening of the matrix after solidification ([DELTA]a = (a[gamma]-a[gamma]')/a[gamma] = 0.09242%), after heat treatment value a increases and approaches the mismatch of the creep-resisting alloys ([DELTA]a = 0.263773%).
For instance, dispersion hardening occurs when fine particles of alloying elements precipitate out as the metal cools from a saturated solution at a temperature high enough to permit recrystallization (annealing temperature).
KN1-3 bronze this capable of the dispersion hardening as a result of the precipitation of the Ni2Si phase in the matrix formed during breakdown, during annealing (ageing) of the supersaturated solid solution, produced as a result of preliminary quenching of the alloy.