Cryogenic Treatment of Stainless Steels

Cryogenic treatment of stainless steels is just one method that can be used to reduce commonly occurring microstructural defects in stainless steels.
With cryogenic treatment the general strength properties of stainless steels can be improved and with the additional heat treatment, plasticity can also be effectively preserved. Continue reading

High Boron Cast Iron: Part Two

Boride emerged as a good alloying option for iron based alloys to help improve toughness and specifically help in applications where wear resistance is important.
There are many studies available but here we discuss the effect of different tempering temperatures on the microstructure and mechanical properties of high boron white cast iron after air quenching. Continue reading

Iron Spark Plasma Sintering: Part Two

Spark Plasma Sintering (SPS) is a sintering technique which is well matched to mechanically milled materials such as tool steels due to its low temperature and short cycle time.
One of the key objectives using SPS is to increase the density of the sinter in order to attain better overall property profiles of the finished part. Continue reading

High Boron Cast Iron: Part One

Boride emerged as a good alloying option for iron based alloys to help improve toughness and specifically help in applications where wear resistance is important.
The addition of boron causes martensite transformation to a mixed state with austenite and this provides the platform for improved overall toughness in the material. Continue reading

Dispersion Strengthened Copper Alloys: Part Two

Coppers range of advantageous characteristics a quite well known including high electrical and thermal conductivity, excellent corrosion resistance to name but a few.
Dispersion strengthened coppers add the advantage of higher strengths which means they can be used for a range or applications such as welding consumables. Continue reading

Introduction to Additive Manufacturing: Part Two

Additive manufacturing is a relatively recent manufacturing method which has become a key area of interest in multiple industrial sectors.
As the application and growth of AM occurs, several systems to classify the AM processes have developed, including one proposed by the American Society for Testing and Materials (ASTM) F42 Committee. Continue reading

Hardfacing Non-Ferrous Alloys

The prime function of Hardfacing materials is to protect a component or other material against the forces of wear.
Most hardfacing alloys are iron, nickel, or cobalt-base and can be used in a variety of forms including powder, solid welding rods or wires and tubular rods or wires. Continue reading

Dispersion Strengthened Copper (DSC) Alloys: Part One

Dispersion strengthening of any material is done with the aim to create a composite of superior physical properties via the dispersion of oxide particles in the metallic matrix.
High energy ball milling provides a repetitive fracture/weld method to achieve a homogeneous dispersoid distribution. Continue reading

Plasma Nitriding of Steels: Part One

Plasma nitriding improves the wear resistance of a material by effectively altering the surface microstructure while maintaining adequate substrate properties.
Nitriding occurs when a bias voltage is applied to the work piece causing ions to collide with the surface and consequently creating the nitride effect. Continue reading

The Low Superheat Casting (LSC) Process

Low superheat casting is similar to the better known SSM technique which can be applied primarily to produce billets with a low cost advantage.
In the LSC process, the alloy is rapidly solidified and cast with a low pouring temperature which is typically just above the liquidus temperature. Continue reading