The Effects of Rolling Deformation and Annealing Treatment on Damping Capacity of 1200 Aluminium Alloy

TL;DR

This study investigates how different degrees of rolling deformation and annealing treatments affect the damping capacity of 1200 aluminium alloy, revealing microstructural changes and their impact on energy dissipation.

Contribution

It provides new insights into the relationship between rolling reduction levels, microstructure, and damping capacity in aluminium alloys.

Findings

Severe plastic deformation at 40% reduction lowers damping capacity.

Microstructure becomes almost equiaxed after 40% reduction.

Damping capacity varies with deformation level and frequency.

Abstract

Annealing treatment is an important step of rolling deformation that contributes to microstructural evolution and leads to the significant changes in damping capacity. Damping capacities were analyzed in the parallel to rolling direction at 1 and 10 Hz respectively. It was found that severe plastic deformation at 40 percent reduction has lower damping capacity compared to that of 30 percent and 20 percent reductions respectively. The microstructural results show that the grains of as rolled alloys were changed to almost equiaxed structures after a rolling reduction at 40 percent reduction.