During heat treatment, the alloy undergoes a microscopic chemical reaction where two distinct phases form within the crystal lattice. This creates a nanoscale periodic structure that impedes the movement of dislocations. In plain English: the internal structure of the metal is locked in a way that makes it incredibly hard and strong, yet it retains the ductility and lubricity of copper.
Spinodal hardening is achieved via: Solution anneal → Cold work → Aging at 300–400°C → Nanoscale Cu-Ni-Sn modulated structure. toughmet nickel bronze
Unlike traditional alloys that rely on precipitation hardening, ToughMet undergoes . During heat treatment, the copper, nickel, and tin separate into two distinct phases—a hard nickel-tin phase embedded within a softer copper-nickel matrix—without a change in crystal structure. This microscopic structure provides: During heat treatment, the alloy undergoes a microscopic
: Spinodal bronze, CuNiSn, galling resistance, non-beryllium copper alloy, sour service. Spinodal hardening is achieved via: Solution anneal →
Unlike beryllium copper (which loses strength above ~150°C), ToughMet retains >80% of room-temperature yield strength up to and remains usable to 350°C.