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 ROMELT Process

The Romelt process is born and driven by the ever present need to design effective steel and iron making processes which are much cleaner in respect to their environmental impact.
First industrial Romelt plant is currently being constructed in Burma and is expected to have a design annual capacity of 200,000 tpy. Continue reading

Electro-Slag Welding (ESW) of Steels

Electro-slag welding is a primary method for cast weld assemblies of heavy sections since one of the key characteristics is its suitably high deposition rate.
Some key advantages include a single pass process, weld symmetry, high welding speed, simple joint preparation and low flux composition. Continue reading

Thermal Expansion of Stainless Steels: Part One

The coefficient of thermal expansion effectively measures the rate of the material expansion as a function of temperature.
This is a critical measure of the material where the application infers heating and remaining at a fixed dimension for any period of time. Continue reading

Titanium-Nickel Shape Memory Alloys

Shape memory alloys are categorized by two very unique properties; pseudo-elasticity (PE), and the shape memory effect (SME).
Since SMA’s are hugely versatile and functional materials they have a range of important applications to fulfill including bone transplant replacements, sensors, antennas for mobile phones and much more. Continue reading

The Nitrocarburizing Process: Part Three

Nitorcarburizing is typically performed on steel components to improve surface hardness of the material via nitrogen dispersion.
One noteworthy finding however suggests that the corrosion resistance of the treated specimen was less than that of the control and untreated part. Continue reading

Boronization of Titanium Alloys

Boronizing is a surface treatment by which boron atoms are diffused into the surface of the metal in quantities exceeding the solubility limit.
Hardness is improved and thus wear resistance increased as well as a number of other advantages such as corrosion and oxidization resistance. Continue reading

Steel Bending

There are five typical methods of bending currently used in industry today: rolling, incremental bending, hot bending, rotary-draw bending, and induction bending.
Although ISF is generally very slow, it is of interest because no or only a simple and cheap tool is required, making the process ideal for small-series production. 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