作　　者： ; ; ; ;

机构地区： 华南理工大学机械与汽车工程学院国家金属材料近净成形工程技术研究中心

出　　处： 《材料导报》 2017年第A01期541-545,共5页

摘　　要： 镍基高温合金具有良好的高温抗氧化和抗腐蚀能力,较高的高温强度、蠕变强度和持久强度,以及良好的抗疲劳性能,广泛地用于制造航空发动机和各种工业燃气轮机的热端部件。热端部件在服役过程中由于受磨损、冲击、高温燃气和冷热疲劳等综合作用,易产生热裂纹,致使零件报废。因此,镍基高温合金部件的先进修复技术有着非常广阔的应用前景。文章针对高温合金修复问题进行论述,着重阐述焊接方法在修复技术中的研究进展,主要涉及激光焊、钎焊、摩擦焊和瞬时液相扩散焊等方法。 Ni-based superalloy are widely used as turbine blades and vanes due to their superior high temperature mechanical properties,such as high temperature strength,fatigue and creep resistance,as well as resistance to corrosion and oxidation.The metal material with Ni-based superalloy is easily hot cracked under the condition of gas with high temperature,cold and hot fatigue.It is meaningful to repair the Ni-based superalloy rather than to replace of the Ni-based superalloy.This article is to overview the repair technique including laser cladding,brazing,friction welding,transient liquit phase welding for Ni-based superalloy from the aspect of characteristic and research progress.

关 键 词： 镍基高温合金 激光焊 钎焊 摩擦焊 瞬时液相扩散焊

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