Abstract:
A method of joining of a ultra high-strength steel and a non-steel material through tailored softening heat treatment using a laser, may include forming a tempering portion by performing heat treatment on a lower plate formed of ultra high-strength steel using the laser; stacking an upper plate formed of a non-steel material on the lower plate formed of the ultra high-strength steel; disposing a connection member on the upper plate; and applying force to the connection member to cause the connection member to pass through the upper plate and then to be inserted into the tempering portion of the lower plate to combine the upper plate and the lower plate.
Abstract:
Provided herein are a thermoelectric material and a method for preparing the same, wherein the thermoelectric material has excellent thermoelectric performance and high mechanical properties (in particular, fracture toughness), and thus, when the thermoelectric material is applied to a thermoelectric module, the thermoelectric module has excellent performance and efficiency and a long lifespan.
Abstract:
A nanocarbon-reinforced aluminum composite material and a method of manufacturing the same are provided. The method of manufacturing a nanocarbon-reinforced aluminum composite material is characterized in that composite powder, in which ceramic-coated nanocarbon is surrounded by metal powder, is added to molten aluminum and then casting the molten aluminum with the added composite powder.