非连续增强金属基复合材料剧烈塑性变形行为研究进展

Research progress on severe plastic deformation behaviors of discontinuously reinforced metal matrix composites

综述了非连续增强金属基复合材料剧烈塑性变形(SPD)行为的研究进展,系统阐述了等径弯曲通道变形(ECAP)、高压扭转(HPT)、多向锻造(MF)、累积叠轧(ARB)和循环挤压压缩(CEC)5种SPD的加工原理和方法。集中介绍了这些方法在铝基、镁基、铜基和钛基等金属基复合材料方面应用的研究进展。重点介绍了金属基复合材料SPD的微观组织演化和变形力学行为,详细阐明了金属基复合材料SPD机制以及超细晶形成机理,指出了金属基复合材料在SPD中存在的深层次问题及发展趋势,展望了利用SPD方法制备超细晶非连续增强金属基复合材料的应用前景。

Research progress was reviewed on the severe plastic deformation(SPD)behaviors of discontinuously reinforced metal matrix composites.Five kinds of SPD processing principle and methods,including equal channel angular pressing(ECAP),high pressure torsion(HRT),multiple forging(MF),accumulative roll bonding(ARB)and cyclic extrusion compression(CEC),were systematically described.The applications of these methods in aluminum matrix,magnesium matrix,copper matrix and titanium matrix composites,etc.were introduced intensively.The special attention was paid to the microstructure evolution and deformation mechanical behavior of metal matrix composites by SPD,and the SPD mechanism and formation mechanism in the preparation of ultrafine-grain composites were also discussed in details.Moreover,the existing problems and developing trend of metal matrix composites in SPD process were stated briefly,and the application of SPD method for preparing discontinuously reinforced metal matrix composites with ultrafine-grain was prospected.