焊接接头表面纳米化解决了决定焊接接头疲劳裂纹萌生和扩展的内在因素之间的矛盾,在细化接头表面晶粒的同时,使基体保持粗晶状态,因而是提高焊接接头疲劳性能的一种有效方法.综述了镁合金表面自纳米化机理及研究现状,分析了表面自纳米化技术在改善镁合金焊接接头疲劳性能方面的研究概况,指出从镁合金焊接接头表面自纳米化的角度开展镁合金焊接接头疲劳性能改善研究具有重要意义.最后,对今后应用表面自纳米化技术改善镁合金焊接接头疲劳性能的研究方向做了展望.
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