The main alloying elements of the 6061 alloy are magnesium and silicon, and form the Mg2Si phase. If it contains a certain amount of manganese and chromium, it can neutralize the bad effect of iron; sometimes a small amount of copper or zinc is added to increase the strength of the alloy without significantly reducing the corrosion resistance; there is still a small amount in the conductive material. Copper to offset the adverse effects of titanium and iron on conductivity; zirconium or titanium can refine grains and control recrystallized structure; in order to improve machinability, lead and antimony can be added. The Mg2Si is solid-dissolved in aluminum, which gives the alloy an artificial age hardening function.
6061-T651 ultrasonic aluminum rod stock
chemical composition:
Copper Cu: 0.15～0.4
Manganese Mn: 0.15
Magnesium Mg: 0.8～1.2
Zinc Zn : 0.25
Chromium Cr: 0.04~0.35
Titanium Ti: 0.15
Silicon Si: 0.4 to 0.8
Iron Fe: 0.7
Aluminum Al: balance
6061 aluminum rod stock mechanical properties:
Tensile strength: 124 MPa
Tensile strength: 55.2 MPa
Elongation: 25.0%
Elasticity factor: 68.9 GPa
Bending ultimate strength: 228 MPa
Poisson's ratio: 0.330
Fatigue strength: 62.1 MPa
6061-T651 ultrasonic aluminum rod stock
heat treatment process:
1) rapid annealing: heating temperature 350 ~ 410 ° C; with the effective thickness of the material, the holding time is between 30 ~ 120min; air or water cooled.
2) High temperature annealing: heating temperature 350 ~ 500 ° C; finished product thickness ≥ 6mm, holding time is 10 ~ 30min, <6mm, heat through; air cooling.
3) Low temperature annealing: heating temperature 150 ~ 250 ° C; holding time is 2 ~ 3h; air or water cooled.
