大功率载流异种金属接头的导电特性及调控机理研究

In view of the common problems in the welding manufacturing of high power current carrying equipment in nonferrous metallurgy and other related industries，the purpose of this research is to realize the control of the electrical conductivity and its distribution characteristics of dissimilar metal joints, and to establish the theoretical system for optimization, regulation and evaluation of the electrical conductive properties of the dissimilar metal joints. The main scientific problems include: 1) the technological mechanism of the formation of dissimilar metal joints and the correlation with the conductive properties of the joints; 2) Mechanism of the influence of interface behavior, microstructure evolution and metallurgical physical process on the electrical conductivity of the dissimilar metal joints; 3) Degradation mechanism and evolution of the conductive properties of dissimilar metal joints under service environment. The above research has an important academic value in understanding the relationship between the formation of dissimilar metal joints and the alienation of electrical conductivity. The theoretical system created by the research work has important theoretical value and engineering application prospect for the manufacture of high power energy transmission and transformation equipment.

针对有色电解冶金等相关行业大功率能量传输转化载流装备焊接制造的共性问题，以控制异种金属接头导电性及其分布特征为目标，旨在建立对接头导电特性的形成和异化过程进行优化、调控并进行科学评价的理论体系，形成创新的研究思路并提出了系统的研究方案。项目研究的科学问题包括：1）异种金属接头成形的工艺机理及与接头导电特性的相关性；2）异种金属接头的界面行为、组织演化和冶金过程等对接头导电性能的异化作用及性能调控方法和机理；3）服役环境下异种金属接头导电性能的退化机理和失效演变过程。以上研究对深入理解异种金属接头的形成与导电特性异化作用之间的联系，实现异种金属接头导电特性的控制具有重要的学术价值。研究工作形成的理论体系对各种高功率能量传输或转化载流装备的焊接制造具有重要的理论价值和工程应用前景。

针对有色电解冶金等相关行业大功率能量传输转化载流装备焊接制造的共性问题，以控制异种金属接头导电性及其分布特征为目标，旨在建立对接头导电特性的形成和异化过程进行优化、调控并进行科学评价的理论体系，形成创新的研究思路并提出了系统的研究方案。项目研究的科学问题包括：1）异种金属接头成形的工艺机理及与接头导电特性的相关性；2）异种金属接头形成的界面行为、组织演化、冶金物理过程等对接头导电性能异化作用的本质及物理冶金调控方法和机理；3）服役环境下异种金属接头导电性能的退化机理和失效演变过程及其评价与表征。以上研究对深入理解异种金属接头的形成与导电特性异化作用之间的联系，实现异种金属接头导电特性的控制具有重要的学术价值。研究工作形成的理论体系对各种高功率能量传输或转化载流装备的焊接制造具有重要的理论价值和工程应用前景。