Bulk Nanostructured Metal

The first cheap alloy which can be produced in large quantities without capital investment, which can be formed and which can be produced without deformation or rapid heat treatment. The alloy can be made in large sizes (greater than 200 mm) in all directions. The controlling scale of the structure is the same as that of carbon nanotubes, and yet, it is stronger than any carbon nanotube for sizes in excess of 2 mm.

The material is now being produced on a large scale and with large dimensions.

bulk nanostructured steel



Original Papers

Strong Bainite Cold Bainite
Hard Bainite Fast Bainite
Temper Mössbauer
Nucleation Rate Theory
Performance Mechanical
Texture Stress
Science Exhibit Magnetic
Low carbon Ductility
Atomic displacements Fatigue
Fracture Powder
Tetragonal ferrite Naked scientist
First nanostructure More powder
Abrasive wear Rolling sliding wear
Hydrogen percolation Spheroidisation
Tempering nanostructure Carbon anomalies

Micrograph Library

Optical Micrographs

Super Bainite, 0.79C,1.56Si,1.98Mn,0.24 Mo, 1.01Cr,1.51Co and 1.01Al wt%, Austenitized at 920 centigrade for 30 min and heat treated at 200 centigrade for 3 days. Photographs provided by Vijay Jerath of CORUS U.K.

6JG10superbainitex100 6JG10superbainitex500

Large Quantity of Extremely Strong Bainite

Some six tonnes of an alloy which represents the first bulk nanostructured metal has been produced.


Six tonnes of nanostructured bainite. Photograph: Peter Brown

Six tonnes of superbainite. Photograph: Peter Brown

Six tonnes of extremely strong bainite. Photograph: Peter Brown


The steel was then further hot-rolled and coiled hot. Its microstructure at this stage is pearlite. The following photographs have been provided by Peter Brown. The strong bainite is produced in subsequent heat treatment.

The final picture shows the flat segments ready for heat-treatment into the nanostructured bainite.

SBS coil1 doc SBS coil2 doc
SBS coil3 doc SBS coil4 doc
SBS coil5 doc SBS coil5 doc

Cylindrical Ingots

The steel capable of producing nanostructured bainite is on the right. These five ingots are produced using a special casting technology.

The austenitisation heat treatement for superbainite
The austenitisation heat treatement for superbainite
Removal from austenitisation furnace
Transport to the isothermal transformation salt-bath where bainite forms.
Plunged into the low-temperature salt-bath.
Once the sample has reached the required temperature, it is removed from the salt bath and placed in an oven at that temperature.

Superalloys Titanium Bainite Martensite Widmanstätten ferrite
Cast iron Welding Allotriomorphic ferrite Movies Slides
Neural Networks Pearlite Recrystallisation Theses

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