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Effect of cold deformation on the properties of aluminum
2018-07-18


A: Physical and chemical properties.

1) Density. After  cold deformation, the density of aluminum is reduced due to defects  such as microcracks or macroscopic cracks and cracks in the crystal and  between the crystals.

2) Resistance. The  destruction of intergranular materials causes direct contact of crystal  grains, ordering of crystal grains, intergranular and intragranular  cracking of aluminum profiles, etc., all of which have a significant  influence on the change of electrical resistance. The first two reduce the resistance as the degree of deformation increases, while the latter is the opposite.

3) Chemical stability. After  cold deformation, the material can be increased in height, making its  chemical properties more unstable and susceptible to corrosion,  especially stress corrosion.

B: Mechanical properties.


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