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6061-T6 aluminium standard heat treating process. T6 temper 6061 has been treated to provide the maximum precipitation hardening (and therefore maximum yield strength) for a 6061 aluminium alloy. It has an ultimate tensile strength of at least 290 MPa (42 ksi) and yield strength of at least 240 MPa (35 ksi).
The recrystallization temperature is temperature at which recrystallization can occur for a given material and processing conditions. This is not a set temperature and is dependent upon factors including the following: [3] Increasing annealing time decreases recrystallization temperature
The temperature range for process annealing ranges from 260 °C (500 °F) to 760 °C (1400 °F), depending on the alloy in question. This process is mainly suited for low-carbon steel. The material is heated up to a temperature just below the lower critical temperature of steel.
Precipitation hardening, also called age hardening or particle hardening, is a heat treatment technique used to increase the yield strength of malleable materials, including most structural alloys of aluminium, magnesium, nickel, titanium, and some steels, stainless steels, and duplex stainless steel.
If further time passes at elevated temperature, the plaques grow together to form a contiguous film. This has a negative effect on corrosion resistance, but can be dissolved by heat treatment. Annealing at 420 °C for one hour followed by slow cooling of 20 °C/h or starting annealing at 200 °C to 240 °C is suitable.
High-strength, low-temperature. For aluminium-to-aluminium and aluminium-to-copper. 78: 22: Ag 72 Zn 28: 710/730 ... prior stress relief annealing is required then ...
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