3d Printed Metallic Glass Components Increase Electric Motor Efficiency
3D printed metallic glass components let motor buyers optimize efficiency and reduce battery dependencies.
Metallic Glass
Amorphous Solid
Amorphous solid represents a class of noncrystalline substances featuring a disordered atomic structure that lacks the long range periodicity found in conventional crystals. Metallic glass belongs to this category, where the rapid cooling of molten metal alloys prevents the atoms from arranging into a stable lattice. Such materials form by quenching liquids at high rates, often exceeding millions of degrees per second, to trap the disordered state permanently.
This disordered arrangement provides unique mechanical properties, including high yield strength and elasticity, which exceed those of traditional crystalline metals.
Production Mechanism
Manufacturing starts by heating alloy constituents until they reach a completely molten state before injecting the melt onto a rapidly spinning cold surface. The thermal energy dissipates almost instantly, which stops atomic diffusion and locks the atoms into a metastable amorphous configuration. Engineers select specific alloy compositions with multiple elements to increase the critical cooling rate required for formation, as complex atomic sizes hinder easy crystallization.
Precision in control of the quench speed determines the successful conversion of the melt into a solid with glassy properties. Variations in cooling speed across the cross section of a bulk object can lead to crystalline inclusions, which reduce the overall strength of the piece.
Market Application
Industrial demand for these alloys focuses on high strength requirements where traditional ductile metals fail under repeated elastic strain. Transformers use amorphous metal cores because the lack of grain boundaries reduces energy loss during cycles of magnetization, which provides superior efficiency compared to silicon steel. Small components benefit from the high surface finish that these materials achieve during casting processes.
High costs associated with rapid cooling equipment currently restrict widespread use to niche sectors. Extreme processing requirements keep the production volume low compared to standard structural steels. The reliance on specialized batch casting methods prevents these materials from dominating high volume output markets.