Decrease in internal stress.
Softening of the metal.
1 and 2.
Aluminum alloys only
Iron base metals only
Both aluminum alloys and iron-base metals
The metals become artificially aged.
The metals become stress corrosion cracked.
The metals become cold worked, strain or work hardened.
Has little or no effect on a metal's heat treated characteristics.
Can significantly alter a metal's properties in the reheated area.
Has a cumulative enhancement effect on the original heat treatment.
To increase its hardness and ductility.
To increase its strength and decrease its internal stresses.
To relieve its internal stresses and reduce its brittleness.
Unclad aluminum alloy in sheet form.
6061-T9 stainless steel.
Clad aluminum alloy.
Rapid cooling; high strength
Slow cooling; low strength
Slow cooling; increased resistance to wear.
Chrome-molybdenum alloy steel.
Titanium Nickel alloy.
Aluminum alloy surface layers and a pure aluminum core.
Pure aluminum surface layers on an aluminum alloy core.
A homogeneous mixture of pure aluminum and aluminum alloy.
Percentage of the basic element in the alloy.
Percentage of carbon in the alloy in hundredths of a percent.
Basic alloying element
Heat-treated aluminum alloy, and the surface material is commercially pure aluminum.
Commercially pure aluminum, and the surface material is heat-treated aluminum alloy.
Strain-hardened aluminum alloy, and the surface material is commercially pure aluminum.
Aluminum alloy containing 11 perfect copper.
Aluminum alloy containing zinc.
99 percent commercially pure aluminum.
The major alloying element.
The number of different major alloying elements used in the metal.
The percent of alloying metal added.
To relieve internal stresses developed within the base metal.
To increase the hardness of the weld.
To remve the surface scale formed during welding.
Prevent surface cracking.