Deformation heat treatment method for toughening high-performance deformation rare-earth magnesium alloy
A technology of deformation heat treatment and deformation of magnesium alloys, which is applied in the field of alloys, can solve the problems of difficult mass production, complicated process methods, and long cycle times, and achieve the advantages of large-scale industrial application, stable chemical properties, and reduced tensile strength. Effect
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Embodiment 1
[0027] Select an ingot with the composition of Mg-11Gd-4Y-0.5Zr, cut it to make a cylindrical sample with a diameter of 40mm and a height of 40mm, and then perform homogenization treatment, that is, place the sample in a tube-type tube protected by argon gas. In the heat treatment furnace, heat up to 525°C with the furnace, keep it warm for 24 hours, and then place it in boiling water at 100°C for quenching. Then put the homogenized cylindrical sample into a tubular heat treatment furnace, preheat it at 410°C for 1 hour and then quench it in boiling water at 100°C, and cut the preheated cylindrical sample into a diameter of 37mm , a cylindrical sample with a height of 38mm, placed in the ingot barrel of a press and heated to an extrusion temperature of 410°C for 8 minutes, then subjected to hot extrusion deformation treatment at an extrusion speed of 1mm / s and an extrusion ratio of 10:1 to obtain a diameter 12mm bar. The bar is processed into a tensile test bar, and then the ...
Embodiment 2
[0029] Select an ingot with the composition of Mg-11Gd-4Y-0.5Zr, cut it to make a cylindrical sample with a diameter of 40mm and a height of 40mm, and then perform homogenization treatment, that is, place the sample in a tube-type tube protected by argon gas. In the heat treatment furnace, heat up to 525°C with the furnace, keep it warm for 24 hours, and then place it in boiling water at 100°C for quenching. Then put the homogenized cylindrical sample into a tubular heat treatment furnace, preheat it at 410°C for 9 hours, then place it in boiling water at 100°C for quenching, and cut the preheated cylindrical sample into a diameter of 37mm , a cylindrical sample with a height of 38mm, placed in the ingot barrel of a press and heated to an extrusion temperature of 410°C for 8 minutes, then subjected to hot extrusion deformation treatment at an extrusion speed of 1mm / s and an extrusion ratio of 10:1 to obtain a diameter 12mm bar. The bar is processed into a tensile test bar, an...
Embodiment 3
[0031] The steps are the same as in Example 1, except that the alloy is changed to Mg-11Gd-4Y-1Zn-0.5Zr alloy. Its yield strength is 376MPa, tensile strength is 440MPa, and elongation is 10.8%.
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