金属加工（热加工）Issue(6)：93-101,108,10.
变载荷塑性变形辅助射流电沉积制备层压梯度纳米孪晶铜结构性能研究
Research on the properties of laminated gradient nano-twinned copper fabricated by deformation-assisted jet electrodeposition with variable load
摘要
Abstract
Laminated gradient nano-twinned copper LNT-Cu(0/50/0)was prepared using deformation-assisted jet electrodeposition with the variable load of 0,50,0N.The cross-sectional morphology and grain microstructure of LNT-Cu(0/50/0)were characterized by field emission scanning electron microscopy(SEM).The results demonstrated that the laminatedgradient nano-twinned copper produced by this method is a dense,defect-free sample.The grain structure of LNT-Cu(0/50/0)transitions from columnar grains at the bottom to equiaxed grains in the middle,and back to columnar grains at the top,with average grain sizes of 550nm,157nm,and 531nm,respectively.The cross-sectional microhardness and tensile properties of LNT-Cu(0/50/0),as well as those of DAJED-Cu-0N and DAJED-Cu-50N,were tested using a Vickers microhardness tester and an electronic universal testing machine.The fracture morphology of LNT-Cu(0/50/0)was observed using SEM.The results showed that the cross-sectional hardness of LNT-Cu(0/50/0)exhibited a laminated gradient distribution,with an average microhardness of 150HV0.2 in the 0N deposition region and up to 190HV0.2 in the 50N deposition region.The cross-sectional microhardness in each region closely matched that of the corresponding single-load samples.The fracture morphology indicated ductile fracture characterized by microvoid coalescence.The yield strength of LNT-Cu(0/50/0)reached 339MPa,with a uniform elongation of 3.7％,showing a balanced mechanical performance.关键词
层压梯度纳米孪晶铜/射流电沉积/塑性变形/层压梯度显微结构/力学性能Key words
laminated gradient nano-twinned copper/jet electrodeposition/deformation/laminated gradient microstructure/mechanical properties引用本文复制引用
冯逸超,华嘉梁,耿燕飞,陈希章,郎文昌,方铁辉..变载荷塑性变形辅助射流电沉积制备层压梯度纳米孪晶铜结构性能研究[J].金属加工（热加工）,2025,(6):93-101,108,10.基金项目
国家自然科学基金项目(NO.51701069) （NO.51701069）
中央高校专项支持计划(NO.531118040070). （NO.531118040070）
