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The Basics of Nonferrous Metallurgy

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Boron-Modified Titanium Alloys: Part One

It might seem impossible to improve upon the impressive properties of modern titanium alloys, but the addition of a common element can multiply at least one property, stiffness, by a factor of five.
What’s more, it might also reduce production costs. The secret is in boron’s unique behavior when combined with different phases of titanium.

Boron-Modified Titanium Alloys: Part Two

Even a small amount of boron, added to the most common Titanium alloy, can have a significant effect on the alloy’s properties. The Benefits are not without trade-offs, though. There is a critical amount to be added, or the benefits will be lost.
What’s more, the industry that needs it the most might not be able to use this new form of Titanium alloy, due to the very behavior that makes the alloy possible.

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.

Bulk Metallic Glass: Part Three

With careful handling of the process stages of BMG, these novel and progressive materials can deliver extraordinary strength, toughness and elasticity, opening up a wide range of different industry application possibilities.
The two main processing paths for BMG are casting and thermoplastic forming and here we go into the details of the advantages and disadvantages of both manufacturing options.

Casting and Powder Metallurgy Titanium Alloys

The various refractory materials employed in casting are attacked by titanium with such severity that sounds castings, possessing good mechanical properties are difficult to obtain.
Powder metallurgical studies have met with equal difficulties. Most titanium metal powders currently available in commercial quantities do not have sufficient purity to produce ductile metal compacts.

Chemical and Mechanical Properties of Titanium and Its Alloys

Titanium, like other elements, is a composite of several isotopes, which range in atomic weight from 46 to 50. The proportions of these isotopes have been computed from spectrographic analysis. Mathematical calculations employing the proportions and mass numbers have assigned titanium a mean atomic weight of 47.88.
Unalloyed titanium may have tensile strengths ranging from 250 MPa for high purity metal produced by the iodide reduction process to 700 MPa for metal produced with sponge titanium of high hardness. The arc-melted unalloyed titanium products are reasonably ductile.