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研究液压对混合复合铸造Al 3003/Al 4004包覆材料微观组织变化的影响。复合铸造Al 3003/Al 4004包覆材料试样为圆形,由Al 3003(外部)和Al 4004(内部)材料组成。采用液压设备,在温度423 K、挤压比5的条件下制造试样。在挤压之前,Al 4004材料的直径为80 mm,Al 3003材料的厚度为35 mm,在挤压后,2种材料的直径和厚度分别为30 mm和5 mm。研究了2个试样的微观组织和硬度。在挤压之前,复合铸造Al 3003/Al 4004包覆材料横截面的硬度以抛物线的形式向中心增大。然而,在挤压后,Al 4004材料的硬度几乎没有变化。在挤压之前,Al 3003和Al 4004材料的界面存在大量直径超过1 mm的大空洞,这些大空洞随着液压过程的进行而消失。
The effect of hydraulic pressure on the microstructure of Al 3003 / Al 4004 clad material was studied. The composite cast Al 3003 / Al 4004 clad material sample was circular and consisted of Al 3003 (exterior) and Al 4004 (interior) material. Using hydraulic equipment, the samples were produced at a temperature of 423 K and an extrusion ratio of 5. Prior to extrusion, Al 4004 material had a diameter of 80 mm and Al 3003 material had a thickness of 35 mm. After extrusion, both materials had diameters and thicknesses of 30 mm and 5 mm, respectively. The microstructure and hardness of two samples were studied. Prior to extrusion, the hardness of the cross-section of the composite cast Al 3003 / Al 4004 cladding material increases toward the center in the form of a parabola. However, the Al 4004 material showed almost no change in hardness after extrusion. Before extrusion, there was a large number of large cavities 1 mm in diameter at the interface between the Al 3003 and Al 4004 materials, which disappeared as the hydraulic process progressed.