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发明公开
CN106141422A 一种提高热处理强化铝合金搅拌摩擦焊接头表面抗腐蚀性的方法 无效 - 驳回

一种提高热处理强化铝合金搅拌摩擦焊接头表面抗腐蚀性的方法
摘要：
本发明涉及金属结构表面抗腐蚀技术领域，特别涉及一种提高热处理强化铝合金搅拌摩擦焊接头表面抗腐蚀性的方法。本发明在已获得的铝合金FSW焊缝表面区域，通过开设槽‑孔交替分布结构并向其中填加Al86‑Ni10‑Ce6非晶态合金粉末和/或Se+Bi粉末，通过二次搅拌摩擦加工使Al86‑Ni10‑Ce6非晶态合金粉末和/或Se+Bi粉末在较低温度、大塑性变形条件下分散分布于焊缝表面及表面以下较浅区域，并与焊缝表面及表面下微区金属发生显著的相变过程或部分冶金反应，实现在焊缝表面及表面下微区范围内，形成具有与原焊缝表面相比较高的抗腐蚀性能。
摘要（英）：

The invention relates to the technical field of corrosion resistance of a metal structure surface and especially relates to a method for promoting corrosion resistance of a thermal treated reinforced aluminum alloy stirring friction welding joint surface. The method comprises the following steps: arranging a slot-hole alternate distributed structure in an acquired aluminum alloy FSW weld surface area; adding A186-Ni10-Ce6 amorphous alloy powder and/or Se+Bi powder into the structure; performing twice stirring friction processing, thereby scattering A186-Ni10-Ce6 amorphous alloy powder and/or Se+Bi powder in the weld surface and the shallow area below the surface under the low-temperature and high-plastic deformation conditions; having an obvious phase-change process or local metallurgy reaction with the metal on the weld surface and in the micro-cell area under the surface, thereby forming corrosion resistance higher than that of the original weld surface on the weld surface and in the micro-cell area under the surface.

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