Optimization method of mechanical properties of tc21 titanium alloy linear friction welding joint
A linear friction welding and linear friction welding technology, applied in the field of titanium alloy weldment optimization, can solve problems such as uneven hardness value of joints, achieve the effects of uniform microhardness value, improve joint structure, and improve impact toughness
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Embodiment 1
[0038] The optimization method of mechanical properties of TC21 titanium alloy linear friction welded joint is implemented according to the following steps:
[0039] Step 1. Perform linear friction welding on the TC21 titanium alloy to obtain a TC21 titanium alloy sample with the original welded joint;
[0040] Step 2, placing the sample in step 1 in a heat treatment furnace for annealing heat treatment, and the annealing temperature is 880°C;
[0041] Step 2 is implemented according to the following steps:
[0042] Step 2.1. The heat treatment furnace is heated from room temperature to 880 °C at a rate of 1 °C / min, then the sample in step 1 is placed in the heat treatment furnace, the heat treatment furnace is heated to 880 °C again, and then kept for 2 hours;
[0043] Step 2.2, the sample after heat preservation is cooled to room temperature in the heat treatment furnace, and the annealing heat treatment is completed;
[0044] Step 3. Perform secondary annealing heat treat...
Embodiment 2
[0048] The optimization method of mechanical properties of TC21 titanium alloy linear friction welded joint is implemented according to the following steps:
[0049] Step 1. Perform linear friction welding on the TC21 titanium alloy to obtain a TC21 titanium alloy sample with the original welded joint;
[0050] Step 2, placing the sample in step 1 in a heat treatment furnace for annealing heat treatment, and the annealing temperature is 940°C;
[0051] Step 2 is implemented according to the following steps:
[0052] Step 2.1. The heat treatment furnace is heated from room temperature to 940°C at a rate of 15°C / min, then the sample in step 1 is placed in the heat treatment furnace, the heat treatment furnace is heated to 940°C again, and then kept for 4h;
[0053] Step 2.2, the sample after heat preservation is cooled to room temperature in the heat treatment furnace, and the annealing heat treatment is completed;
[0054] Step 3. Perform secondary annealing heat treatment on...
Embodiment 3
[0058] The optimization method of mechanical properties of TC21 titanium alloy linear friction welded joint is implemented according to the following steps:
[0059] Step 1. Perform linear friction welding on the TC21 titanium alloy to obtain a TC21 titanium alloy sample with the original welded joint;
[0060] Step 2, placing the sample in step 1 in a heat treatment furnace for annealing heat treatment, and the annealing temperature is 890°C;
[0061] Step 2 is implemented according to the following steps:
[0062] Step 2.1, the heat treatment furnace is heated from room temperature to 890 °C at a rate of 10 °C / min, then the sample in step 1 is placed in the heat treatment furnace, the heat treatment furnace is heated to 890 °C again, and then kept for 3 hours;
[0063] Step 2.2, the sample after heat preservation is cooled to room temperature in the heat treatment furnace, and the annealing heat treatment is completed;
[0064] Step 3. Perform secondary annealing heat treatm...
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