Joining of metallic glasses in liquid via ultrasonic vibrations
Welding technology plays a pivotal role in the development of human society.Currently,specialized environment welding techniques,such as underwater welding,have profound implications for aerospace,defense,and deep-sea exploration.However,the difficulty of welding significantly increases when operations must be conducted in complex underwater conditions.Furthermore,welding processes hold great potential in complex environments such as flammable or explosive liquids,as well as extremely low temperature.Applications in fields like oil and gas storage container repair,polar and deep-space manufacturing,require further research in related welding technologies.Ultrasonic vibration processing is a unique technique that applies frequencies reaching tens of thousands of Hertz.For amorphous alloys(metallic glasses),the application of ultrasonic vibration can soften its with liquid-like state.Capitalizing on this characteristic,we have introduced ultrasonic vibration technology into the field of under-liquid welding.In this work,successful welding of amorphous alloys has been achieved in water,seawater,alcohol,and liquid nitrogen environments.This breakthrough provides a viable strategy for manufacturing in extreme environments.
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