Aluminium Fabrication BooksAluminium reference books

Welding of Aluminium and Its Alloys

by Gene Mathers (2011)








1 – Introduction to the welding of aluminium

  • Introduction
  • Characteristics of aluminium
  • Products forms
  • Welding: a new definition

2 – Welding metallurgy

3 – Material standards, designations and alloys

  • Designation criteria
  • Alloying elements
  • CEN designation system
  • Specific alloy metallurgy
  • Filler metal selection

4 – Preparation for welding

  • Introduction
  • Storage and handling
  • Plasma-arc cutting
  • Laser beam cutting
  • Water jet cutting
  • Mechanical cutting
  • Cleaning and degreasing

PREVIEW (1st edition, 2002) 

Some interesting pictures from this book

Figure 2.1 – Definition of weld features

Figure 2.3 – General relationship of grain size with strength, ductility and toughness

Figure 2.5 – Illustration of the effect of cold work on strength, hardness and ductility

Figure 2.6 – Illustration of the solution treatment and age-(precipitation) hardening heat treatment cycle

Figure 2.11 – Solidification of a metal

Figure 2.17 – Effect of annealing temperature on cold work and strength

Figure 2.18 – Effect of welding on strength in cold worked alloy. Figure 2.19 – Effect of welding on 6061-T6 age-hardened alloy – as welded.

  • The cold worked alloys will experience a loss of strength due to recrystallization in the HAZ. Recrystallization begin to take place when the temperature in the HAZ exceeds 200 ⁰C and progressively increases with full annealing taking place over 300 ⁰C (see Figure 2.17). In Figure 2.18 is shown the loss of strength for a TIG welded 5xxx alloy.
  • The loss in tensile strength in the heat-treatable alloys (Figure 2.19) is caused by a dissolution of the precipitates in the 2xxx series aluminium alloys and a coarsening or overageing of the precipitates in the 6xxx and 7xxx aluminium alloys.