A magnesium alloy with high strength, toughness and high electromagnetic shielding performance and its deformation heat treatment method
A deformation heat treatment and electromagnetic shielding technology, which is applied in the field of high strength, toughness and high electromagnetic shielding performance magnesium alloy and its deformation heat treatment, can solve the problems of incompatibility between strength and toughness and electromagnetic shielding performance, low strength, insufficient strength and toughness, etc., to achieve improvement Effects of electromagnetic shielding performance, increased reflective surface density, and lightweight price
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Embodiment 1
[0023] The raw material is Mg-3Gd-0.6Ca-0.2Zn alloy (mass percentage), the Ca / Zn mass ratio is 3, and the plate with a thickness of 10 mm is obtained by semi-continuous casting and hot rolling. After solution treatment, it is carried out at 230 ° C. 72h of aging treatment and water quenching, followed by deformation at 80°C to a true strain of 0.03, and then 48h of aging treatment and water quenching at 190°C. The room temperature mechanical properties and electromagnetic shielding properties of the alloy were tested, and the results are shown in Table 1.
Embodiment 2
[0025] The raw material is Mg-6Gd-0.8Ca-0.1Zn alloy (mass percentage), the Ca / Zn mass ratio is 8, and the plate with a thickness of 20 mm is obtained by semi-continuous casting and hot extrusion. Aging treatment and water quenching were carried out for 60 hours, followed by deformation to a true strain of 0.07 at 60°C, followed by aging treatment and water quenching at 220°C for 24 hours. The room temperature mechanical properties and electromagnetic shielding properties of the alloy were tested, and the results are shown in Table 1.
Embodiment 3
[0027] The raw material is Mg-16Gd-0.2Ca-0.02Zn alloy (mass percentage), the Ca / Zn mass ratio is 10, and the plate with a thickness of 25 mm is obtained by semi-continuous casting and hot rolling. After solution treatment, it is carried out at 200 ° C 2h of aging treatment and water quenching, followed by deformation at room temperature to a true strain of 0.1, and then 1h of aging treatment and water quenching at 150°C. The room temperature mechanical properties and electromagnetic shielding properties of the alloy were tested, and the results are shown in Table 1.
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