Archive for February, 2011

Whai is Stainless Steel?

A Stainless Steel art deco sculpture on the Niagara-Mohawk Power building in Syracuse, New York.

Stainless steel is the name given to a group of corrosion resistant and high temperature steels. Their remarkable resistance to corrosion is due to a chromium-rich oxide film which forms on the surface. When ordinary carbon steel is exposed to rain water, for example, it corrodes forming a brown iron oxide, commonly called rust, on the surface. This is not protective and eventually the entire piece of steel will corrode and be converted to rust.

(continue reading…)

You might also like

Austenite (Gamma Iron)   Austenite, also known as gamma phase...
Hydrogen Embrittlement Hydrogen Embrittlement in carbon steel,...
Composite Materials   Composite materials are formed by...
Metallography This image titled "Wood Pile (SEM)" received...
Grab This Widget

Heat Treatment of Steel

 

Heat treating is a group of industrial and metalworking processes used to alter the physical, and sometimes chemical, properties of a material. The most common application is metallurgical. Heat treatments are also used in the manufacture of many other materials, such as glass.

Hot Metal

Heat treatment involves the use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of a material. Heat treatment techniques include annealing, case hardening, precipitation strengthening, tempering and quenching.

(continue reading…)

You might also like

Welding   Welding is a fabrication or sculptural...
Aluminum alloy Aluminum Alloy Wheel An alloy is a material...
Austenite (Gamma Iron)   Austenite, also known as gamma phase...
Titanium and It’s Alloys   Titanium Metal Titanium was...
Grab This Widget

Aluminum alloy

Aluminum Alloy Wheel

An alloy is a material made up of two or more metals. Alloys have certain specific, desirable characteristics, including strength, formability, and corrosion resistance. Some of the common elements alloyed with aluminum include copper, manganese, silicon, magnesium, and zinc. Typical applications and uses of aluminum alloys include building products (siding and structural), rigid and flexible packaging (foil, food, and beverage cans), and transportation (automobiles, aircraft, and rail cars).

(continue reading…)

You might also like

Foundry and Casting   A foundry is a factory that produces...
Types of Materials   Metals: Metals are elements...
Extrusion   Extrusion is the process by which...
Nickel and Nickel Alloys   Nickel is a chemical element, with...
Grab This Widget

Powder Metallurgy

Powder Metallurgy Process, source : http://www.themetalcasting.com/

Powder metallurgy is a forming and fabrication technique consisting of three major processing stages. First, the primary material is physically powdered, divided into many small individual particles. Next, the powder is injected into a mold or passed through a die to produce a weakly cohesive structure (via cold welding) very near the dimensions of the object ultimately to be manufactured.

(continue reading…)

You might also like

Phase Diagrams Fe-Mn, Fe-Co, Fe-Mo   In pure iron, the A4 (1394 °C) and...
Metallurgy Glossary Metallurgy Glossary Activity: A function...
The Casting Process Pictures These are the metallurgy pictures jobs and...
Extrusion   Extrusion is the process by which...
Grab This Widget

« Older Entries
  • Translator

  • Copyright © 1996-2010 Metallurgy for Dummies. All rights reserved.
    Jarrah theme by Templates Next | Powered by WordPress