Company News

Effect of cold deformation on the properties of aluminum profiles

Update time : 2022-11-17 19:49:18

Physical and chemical properties

1. Density. After cold deformation, the density of aluminum profiles decreases due to the microcracks, macrocracks and holes in the cracks in and between grains.

2. Resistance. The destruction of intergranular material leads to the direct contact of grains, the ordination of grain direction, and the fracture of intergranular and intra granular, all of which have obvious influence on the change of electrical resistance. The first two make the resistance decrease with the increase of deformation degree, the latter is the opposite.

3. Chemical stability. After cold deformation, the internal energy of the material increases, making its chemical properties more unstable and easy to be corroded, especially easy to produce stress corrosion.

Mechanical properties

After cold deformation of aluminum profile, due to the intra - and intergranular failure, lattice distortion and the second type of residual stress, the plasticity index drops sharply and may be close to the completely brittle state in the limit state. On the other hand, due to lattice distortion, dislocation increase, grain is elongated and refined and the appearance of substructure, so that the strength index is greatly improved, that is, work hardening phenomenon.

Structure and anisotropy

After large cold deformation, the aluminum profiles show anisotropy due to the texture. For example, aluminum alloy sheet is prone to obvious lugging during deep drawing. Processing conditions should be reasonably controlled to make full use of the favorable aspects of texture and anisotropy, while avoiding or eliminating the unfavorable aspects.

Previous : What are the causes of loose bolts of aluminum profile fittings? How to solve it?

Next : Why are industrial aluminum profiles so popular?

Aluminum Sheet Scrap Suppliers and Manufacturers: Essential Safety Instructions for Handling and Recycling

Sep .14.2024

Handling aluminum sheet scrap requires adherence to strict safety guidelines to ensure the well-being of workers and the integrity of the materials.

Suppliers of Aluminum Scrap: Key to Sustainable Manufacturing

Sep .14.2024

With aluminum being one of the most widely used metals, finding reliable suppliers of aluminum scrap is essential for businesses across various sectors.

Aluminium Sheet Scrap Supplier: Your Trusted Source for Sustainable Recycling

Sep .14.2024

Aluminium sheet scrap has become an increasingly valuable material in the global push for sustainability.

Aluminium Sheet Scrap Supplier: Your Source for Sustainable and Cost-Effective Materials

Sep .13.2024

An aluminium sheet scrap supplier plays a vital role in the recycling and reuse of aluminium materials.

WanStar

Ottilia Chtherian Fannie Caroline Daria Nancy

Leave a message