A method of high speed bonding at least one material includes applying
acoustic energy, using an acoustic horn and an anvil, to the material. The
method also includes applying force to at least one of the horn and the
anvil to yield a peak pressure between the horn and the anvil of at least
2.068.times.10.sup.7 N/m.sup.2. The acoustic energy and pressure are
applied for a time sufficient to create bonds in the material such that
the material is sufficiently quenched before reducing the pressure. The
method can include applying acoustic energy at an amplitude of vibration
selected in combination with the frequency of vibration to yield an
acoustic velocity of no greater than 4.72 m/s.