KEKUATAN TARIK DAN POROSITAS HASIL SAMBUNGAN LAS GESEK ALUMINIUM 6061 DENGAN BERBAGAI SUHU AGING
ABSTRACT: Aluminum alloy is
one of materials that is difficult joining with fusion welding. Friction
welding is solution to solve engineering problems in joinning with fusion
welding. The parametersthat influence onfriction weldingare frictiontime,
rotational speed, compressive force, and upset force. In this study, specimens
were friction welded with rotation speed of 1600 rpm, compressive force during
friction welding 123 kgf for 120 seconds, and upset force 202 kgf for 120
seconds.The weakness of the friction welding process is a decline in strength,
it is due to friction welding is done in solid condition. In order to increase
tensile strength of friction welding joint, precipitation hardening methods can
be used.Precipitation hardening methods carried out in three stages, solution
heat treatment, quenching and agingwith artificial aging process. The artificial
aging temperature variated by 150 C, 185 0 C 200 0 C, and 225 0 C with a
holding time in 7 hours. The results showed that precipitation hardening cause
porosity decreasedin the weld joint. Specimens with a aging temperature 150 0 C
and holding time for 7 hours has the smallest porosity of 0,11 % and it has
maximum tensile strength of 186,65 MPa.
Penulis: Pungky Eka Setyawan,
Yudy Surya Irawan, Wahyono Suprapto
Kode Jurnal: jptmesindd140195
