Solid amorphous is more stable than crystalline

Amorphous metals: properties and peculiarities

What are amorphous metals?

Amorphous metals are created by the shock freezing of metallic melts. The atoms have no opportunity to form a crystalline lattice and solidify in a disordered manner (amorphous). Since the phase transition from liquid to solid is suppressed in this process, no crystallization nuclei form during solidification. These defects in the lattice structure of conventional metals influence the mechanical and electromagnetic properties and lead, for example, to the material showing an increased tendency to corrosion, being brittle or cracking more quickly.

Since there are no lattice structures in amorphous metals, no grain and phase boundaries are formed. The material shows excellent mechanical properties, is above average corrosion resistance, biocompatible and behaves isotropic. For this reason, metallic glasses, as amorphous metals are also called, are ideally suited for a large number of high-tech applications and, for example, interesting for wear-resistant ones Drive components, stable Suspensions, Membranes for Sensors or housing for Consumer electronics.

Learn more about the possible uses of amorphous metals

Our offer: Amorphous alloys from Heraeus AMLOY

Our portfolio includes amorphous alloys zirconium - Base. We are also currently researching alloys based on titanium.

Our customer service will be happy to advise you on the right material for your project. Contact us!

Material data of amorphous alloys from Heraeus AMLOY:

Zirconium-based Zirconium-based Zirconium-based
Surname AMLOY-ZR01 AMLOY-ZR02 AMLOY-ZR03
Density (g / cm3) 6,68 6,65 6,65
Liquidus temperature (° C) 920 830 840
Solidus temperature (° C) 870 781 815
Glass transition temperature Tg (° C) 400 403 400
Crystallization temperature Tx (° C) 475 469 498
Enthalpy of crystallization ∆H (J / g) -47 -47 60
Modulus of elasticity (GPa) 87 89 85
Poisson's number 0,35 0,37 0,37
Flexural Strength (GPa) 2,3 2 2,2
Tensile strength (GPa) 1,6 1,7 1,6
Compressive strength (GPa) 1,7 1,6 1,6
Vickers hardness (HV5) 480 540 500
AMLOY-ZR01 AMLOY-ZR02 AMLOY-ZR03

Amorphous metals: technical properties

Amorphous metals offer properties in a unique combination that are not found in conventional materials.

Mechanically

  • High strength combined with excellent elasticity (twice as high as steel)
  • High surface quality
  • High hardness and therefore low abrasion (comparable to ceramic)
  • Isotropic properties
  • Low electrical conductivity

These properties make amorphous metals good for heavily used components, how Hinges or Gear parts be used.

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Amorphous metals vs. steel: In our video we show you how elastic amorphous metals are compared to steel.

High magnetic permeability

  • Electrical resistance is almost independent of temperature
  • Easy to magnetize and demagnetize

These properties make amorphous metals ideal in applications for Electric motors and EMI shields be used.

Chemically and medically

  • High corrosion resistance due to the lack of grain boundaries and crystalline structures
  • Biocompatibility of some alloys (certified according to ISO 10993-5 and ISO 10993-12)

These properties make amorphous metals excellent for medical instruments or Implants but also for Components in corrosive environments can be used.

Do you have any questions about the properties of amorphous metals and their possible uses? Our customer service will be happy to advise you!