Piece of steel showing a friction stir weld join, 2000.

Piece of steel showing a friction stir weld join, 2000.

Stir weld update, Challenge of Materials Gallery, Science Museum, Nov 2000.

Stir weld update, Challenge of Materials Gallery, Science Museum, Nov 2000.

Oxygen blowpipes developed in 1823 and 1888.

Cast aluminium alloy. Light micrograph in

Titanium aluminium alloy. Light micrograph

Sample of intermetallic compound of copper and aluminium, 1925.

0.2% Carbon steel weld (etched). Light micr

Specimen of an intermetallic compound of copper and aluminium, 1925.

Aluminium alloy complex phase. Light microg

Robert H Goddard at first flight of a liquid propellant rocket, 16 March 1926.