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The Basics of Nonferrous Metallurgy

142 Articoli

Die Casting of Aluminum Alloys: Part Two

Aluminum die casting alloys are lightweight, offer good corrosion resistance, ease of casting, good mechanical properties and dimensional stability.
A comparison of nine parameters of die-casting versus stamping, forging, sand casting, permanent mold casting and plastic molding is made in this article.

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.

Dispersion Strengthened Copper (DSC) 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.

Dispersion Strengthened Titanium Alloys

Finley dispersed nano-particles of oxides can be successfully used in the strengthening of titanium alloys due to their hardness, stability and insolubility in the base-metal.
Other dispersoids can also be used such a ceramics but the most important aspect is for them to be thermodynamically stable, homogeneously distributed in the metal matrix and of nanometric size.

Effect of Environment on the Cracks Behavior in TA6V Alloy

To get more information on the fatigue behavior of Ti-alloys, the growth of long cracks and of physically short bidimensional cracks has been studied on a TA6V alloy.
This article presents some results obtained on the influence of the crack wake on the propagation of fatigue cracks in specimens tested in ambient air and in high vacuum.

Effects of Composition, Processing, and Structure on Properties of Copper and Copper Alloys

Copper and the majority of its alloys are highly workable hot or cold, making them readily commercially available in various wrought forms: forgings, bar, wire, tube, sheet, and foil.
In 1995, copper used in wire and cable represented about 50% of U.S. production and in flat products of various thickness another 15%, rod and bar about 14%, tube about 14.5%, with foundries using about 5% for cast products, and metal powder manufacturers about 0.6%.
Besides the more familiar copper wire, copper and its alloys are used in electrical and electronic connectors and components, heat-exchanger tubing, plumbing fixtures, hardware, bearings, and coinage.