Alloying magnesium alloys

Low 1 to 5.9 Aluminum alloys Magnesium alloys Beryllium Titanium alloys... 

A synthetic or man-made diamond material is now available which is extremely tough with a hardness approaching that of natural diamond. A layer of this synthetic diamond material is bonded to a tough shock-resisting base of cemented carbide for use in the form of tips. The range of application is on non-ferrous metals such as aluminium alloys, magnesium alloys, copper, brass, bronze and zinc alloys and non-metallic materials such as ceramics, porcelain and plastics. This material will also machine fully sintered tungsten carbide. 

Speidel, M.O., Blackburn, M.J., Beck, T.R., Feeney, J.A. Corrosion fatigue and stress corrosion crack growth in high strength aluminum alloys, magnesium alloys and titanium alloys exposed to aqueous solutions. In Corrosion Fatigue, International Corrosion Conference Series NACE-2 (1972)... 

Forgeability of materials important must be ductile at forging temperature. Relative forgeability is as follows, with the easiest to forge first aluminum alloys, magnesium alloys, copper alloys, carbon steels, low alloy steels, stainless steels, titanium alloys, high alloy steels, refractory metals and nickel alloys. 

Aluminum alloys Magnesium alloys Refractory metals Noble Metals... 

Detailed information concerning specific materials can be obtained from the many papers on the use of inoculants, e.g. aluminium alloys,magnesium alloys, - steels,or from recent reviews," A summary is given in Table 6.1. The effectiveness of inoculants can be quite striking, as shown in Figs. 6.12 and 6.13. 

These compounds are obtained by action of halogenated organic derivatives on lead alloys (magnesium or alkaline metal alloys). 

Beryllium is added to copper to produce an alloy with greatly increased wear resistance it is used for current-carrying springs and non-sparking safety tools. It is also used as a neutron moderator and reflector in nuclear reactors. Much magnesium is used to prepare light nieial allo>s. other uses include the extraction of titanium (p. 370) and in the removal of oxygen and sulphur from steels calcium finds a similar use. 

Very small quantities of bismuthine are obtained when a bismuth-magnesium alloy, BijMgj, is dissolved in hydrochloric acid. As would be expected, it is extremely unstable, decomposing at room temperature to bismuth and hydrogen. Alkyl and aryl derivatives, for example trimethylbismuthine, Bi(CHj)3, are more stable. 

Although its electrical conductivity is only about 60% that of copper, it is used in electrical transmission lines because of its light weight. Pure aluminum is soft and lacks strength, but it can be alloyed with small amounts of copper, magnesium, silicon, manganese, and other elements to impart a variety of useful properties. 

Small amounts of yttrium (0.1 to 0.2%) can be used to reduce the grain size in chromium, molybdenum, zirconium, and titanium, and to increase strength of aluminum and magnesium alloys. 

TABLE 11.60 Type N Thermocouples Nickel-14.2% Chromium-1.4% Silicon Alloy vs. Nickel-4.4% Silicon-0.1% Magnesium Alloy... 

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