Research On Age Forming Microstructure And Mechanical Properties Of Aluminum Alloy FSW Components

In order to satisfy modern aircraft performance and reduce its weight, single part manufacturing whose developing direction is whole structure manufacturing technology and approach no allowance manufacturing technology. integral panel structure as the most important structural component of modern aircraft’s body and wings has been widely used these days.age-forming technology has a special advantage in integral panel structure production of aerospace vehicle as a new aluminum alloy forming process. But the problem of Long Milling processing cycle of integral panel and Low material utilization has proposed age-forming research subject based on friction stir welding of integral panel, Which study age-forming of friction stir welding, affords a whole new method for producing integral panel structure, has a significant engineering value.This paper chooses2A12aluminum alloy as research subject, weld curved panel as representative parts. Through comparison experiments of age-forming for FSW&Non-welded sample under different aging time, comparison experiments of different reheating treatment and age-forming Composite technology, discusses microstructure developing principle and strengthening mechanism of age-forming2A12FSW Welding assembly. systematically study FSW technology aga-forming on Macro morphology and Organizational Influences, analyze aga-forming’s elongation,tensile strength and hardness; Explore improvements and effects of different reheating treatment and age-forming Composite technology on2A12FSW Welding assembly’s Properties and structure to search new technology which can optimize age-forming technology of FSW assembly.Research results show that age-forming technology of2A12FSW Welding gets a good characteristic of materials through age-forming technology.meanwhile, spring rate, Tensile Properties and hardness of2A12alumium alloy age-forming assembly may be affected to various degree and suffer from certain negative impact by FSW technology, FSW technology advanced best age-forming time of2A12alumium alloy, which has inhibition on its age-forming process.FSW weld area has a complicated Microstructure,crystalline size and Distribution shape has Apparent regionalization, inferior to Non welding Organization Structure. After annealing, solution treatment and classification age-forming technology,elongation,tensile strength and hardness of2A12alumium alloy FSW Welding assembly has been largely promoted,Which waken and eliminate adverse impact of FSW Welding assembly.Microstructure of FSW weld area has been refined and homogenized.This paper mainly research the quality of FSW technology on age-forming on the basis of FSW Welding assembly’s age-forming Composite technology, to get rib plate weld assembly with good performance, which is valuable for integral panel structure engineering.