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中文摘要：
选取多种铝/镁/铜合金、铝基复合材料为研究对象，进行了广泛的搅拌摩擦焊接与加工（FSW/FSP）研究。采用OM、SEM、EBSD、TEM和HRTEM等方法对焊接接头/加工区的微观组织进行分析，并测试了接头/加工区的硬度、拉伸性能、疲劳性能、抗腐蚀性能。系统研究了转速、进行速度、冷却条件和工具尺寸等参数对接头/加工区组织与性能的影响规律，阐明了FSW/FSP过程中材料流变特性、动态再结晶、第二相破碎和溶解机制等共性问题，建立了集塑性加工、热处理、缺陷修补和局部强化于一体的FSP新工艺。主要研究结果如下（1）确定焊接速度为影响沉淀强化铝合金FSW接头力学性能的关键因素并进行了高精度数值模拟；（2）建立了软态焊接随后强化热处理的复合材料FSW工艺；（3）建立了适合异种金属连接的FSW工艺；（4）建立了低热输入条件下Cu、Mg合金的FSW工艺；（4）建立了改善Mg合金力学性能的"FSP+时效"新工艺；（6）实现了细晶结构的精确控制并在高应变速率/低温度下获得超塑性；（7）开发了铸件微观结构改性及局部缺陷修补的FSP新技术；（8）阐明了FSW/FSP过程中的材料流变特性及"洋葱环"结构的起源。
结论摘要：
英文主题词Friction stir welding; friction stir processing; dynamic recrystal; grain refining; mechanical properties
成果综合统计
期刊论文
会议论文
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期刊论文
DSC analysis of liquid volume fraction and compressive behavior of the semi-solid Si3N4w/Al-Si compo
Microstructural evolution and performance of friction stir welded aluminum matrix composites reinfor
Microstructural refinement and property enhancement of cast light alloys via friction stir processin
Effect of Friction Stir Processing Procedures on Microstructure and Mechanical Properties of Mg-Al-Z
Effect of microstructural evolution on mechanical properties of friction stir welded AA2009/SiCp com
Grain boundary misorientation and texture development in friction stir welded SiCp/Al-Cu-Mg composit
Influence of tool dimension and welding parameters on microstructure and mechanical properties of fr
Effect of initial butt surface on tensile properties and fracture behavior of friction stir welded A
Effects of friction stir welding parameters on microstructures and mechanical properties of brass jo
Achieving exceptionally high superplasticity at high strain rates in a micrograined Al-Mg-Sc alloy p
Development of a fine-grained microstructure and the properties of a nugget zone in friction stir we
Effects of post-weld heat-treatment and second-welding on tensile properties of friction stir welded
Effect of welding parameters on tensile properties and fracture behavior of friction stir welded Al-
Effect of welding parameters on microstructure and tensile properties of friction stir welded 6061 A
会议论文
Microstructural evolution and performance of friction stir welded aluminum matrix composites reinfor
Microstructural evolution and mechanical properties of friction stir welded/processed magnesium allo
Effect of microstructural evolution on mechanical properties of friction stir welded magnesium alloy
Challenge and opportunities for friction stir welding of discontinuously reinforced metal matrix com
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