钨/钼合金先进焊接技术研究现状

Advancement in Tungsten/Molybdenum Alloy Welding Tech-nology

摘要:

钨/钼合金因其高熔点、高强度等特性，在核工业、航空航天等领域中广泛应用。然而，其烧结性、加工性较差，在制造大尺寸或复杂形状零件时极为困难，因此开展钨/钼合金先进焊接技术研究非常必要。从钨/钼合金焊接缺陷和焊接工艺出发，介绍近年钎焊、放电等离子烧结扩散焊、电子束焊、激光焊等特种连接技术及合金掺杂处理应用于钨/钼合金异质连接的最新进展，同时指出钨/钼合金焊接存在的问题。最后对钨/钼合金各种焊接技术的未来发展进行总结和展望，为钨/钼合金焊接技术进一步发展提供理论支撑和工程依据。

Abstract:

Tungsten/molybdenum alloys are widely utilized in the nuclear industry, aerospace and various other fields due to their high melting points and strength characteristics. However, poor sinterability and processability make it difficult to manufacture large-size or complex-shaped parts. Hence, an in-depth study on the welding technology of tungsten/molybdenum alloys is urgent. An introduction of tungsten/molybdenum alloy welding defects and joining process was provided, along with recent advancements in brazing, spark plasma sintering diffusion bonding, electron beam welding and laser beam welding. The latest progress in alloy doping treatment applied to tungsten/molybdenum alloy dissimilar welding was also discussed, and existing welding problems were pointed out. The development prospects of weldability of tungsten/molybdenum alloy by various joining technologies were forecasted, thereby furnishing a theoretical and practical found.