Wang Keqi, Naumov Anton, Panchenko Evgenii, Panchenko Oleg
Laboratory of Lightweight Materials and Structures, Institute of Machinery, Materials, and Transport, Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia.
Materials (Basel). 2024 Oct 19;17(20):5107. doi: 10.3390/ma17205107.
The friction stir welding (FSW) process is a unique combination of deformation and high temperature, which provides opportunities to modify microstructures through the adjustment of the processing parameters and is an ideal way to join non-weldable aluminum alloys by avoiding the formation of a molten pool. The 7xxx series heat-treatable aluminum alloys are widely used in the aerospace field as high-performance structural materials. The microstructure evolution and mechanical performance of these alloys are affected by the effects of thermomechanical processing, which provides opportunities to optimize the material properties by controlling microstructural features such as intermetallic constituent particles, dispersoids and nanoscale precipitates. This paper focuses on the basic principles of the thermal and mechanical effects generated during FSW on the evolution of second-phase particles in different zones of the weld.
搅拌摩擦焊（FSW）工艺是变形与高温的独特结合，它通过调整加工参数为改变微观结构提供了机会，并且是通过避免熔池形成来连接不可焊接铝合金的理想方法。7xxx系列可热处理铝合金作为高性能结构材料在航空航天领域广泛应用。这些合金的微观结构演变和力学性能受热机械加工的影响，这为通过控制金属间组成颗粒、弥散相和纳米级析出物等微观结构特征来优化材料性能提供了机会。本文重点研究搅拌摩擦焊过程中产生的热和机械效应在焊缝不同区域第二相粒子演变方面的基本原理。
