Mechanical properties of metals

Mechanical properties of metals reflect the ability of materials to show resistance to the loads applied to them.The ability to express these quantitative indicators.The mechanical properties of metals and alloys - is, primarily, toughness, hardness, ductility, toughness.Products have also creep, durability and other qualities.

main mechanical characteristics of the materials was determined at trial.Depending on the nature of the impact load per unit time, again distinguish variables, static and dynamic tests.Mechanical properties of metals are also manifested in the annex to the articles of external loads.In particular, tests conducted impact bending, torsion, compression, tension and other effects.

Mechanical properties of metals occur and deformation.Under this process, realize the change size and shape of the product under the influence of stress.Deformation of solid bodies divided into plastic and elastic.In the first case, the product, after removal of the load is not restored to its size and

shape, and in the second - comes to its original state prior to the application of force.

Typically, the mechanical properties of metals begin to describe hardness.That it is the most important quality of products.Under the ability to understand the hardness of the metal show resistance to plastic deformation.A quantitative measure of this ability is the most common quality control products.

Another important feature is the durability of metal.Under this quality refers to the ability to resist the destruction of products and deformation.With the destruction of the process of the formation of cracks, which provokes the separation of the material.The strength index determined during tensile testing.

plastic material characterized by its ability to plastic deformation.In other words, it determines the quality of the possibility of residual changes in size and shape without breaking.Plasticity is an important criterion for choosing products for pressure treatment.

ability to absorb part of the external mechanical force energy through plastic deformation is called viscosity.

Among alloys occupies a special place iron (iron-carbon alloy).It contains Bole 2.14% carbon and a number of impurities.Iron-alloy casting characterized by high performance.

most common in industry are such varieties as white, gray and ductile iron.

first example, has high hardness, it provides resistance to wear.At the same time, white cast iron is fragile.Furthermore, the material is subjected to poor machining.

As one of the core in the foundry industry uses gray cast iron.This material has a tensile strength high enough and very well treated.

Accordingly, ductile iron foundry, and is endowed with good physical qualities.

Among non-ferrous metals and alloys should be made of aluminum.They are endowed with high levels of corrosion resistance, it is easily machinable and pressure.

also quite common raw material in the production of copper alloys are considered.These mixtures have a good sliding, technological and physical properties.

Titanium alloys have high corrosion resistance, heat resistance, high strength.They also have low density.There

magnesium alloys, which are well exposed to machining.