Processing intermetallic composites by self-propagating, high-temperature synthesis.
Alman-DE; Hawk-JA; Petty-AV Jr.; Rawers-JC
JOM 1994 Mar; 46(3):31-35
Initiated at the interface of dissimilar elemental metal foils, a self-propagating, high-temperature synthesis (SHS) reaction can be used to produce a fully dense, well-bonded metal-intermetallic layered composite. In the research described here, aluminum foils were sandwiched between metal foils (Fe, Ni, Ti) and heated in a hot press to approximately the melting point of aluminum. An SHS reaction occurred at the metal-aluminum interface, consuming all of the aluminum foil and part of the metal foil, resulting in a strongly bonded metal-aluminide interface. Tensile tests conducted at room temperature revealed that composites can be designed to behave in a high-strength and high-toughness manner by altering the thicknesses of the elemental foils.
Metals; Metallurgy; Metallurgical-processes
JOM: the Journal of the Minerals, Metals & Materials Society