The effects of ultrasonic frequency pulse arc on deposit and bimetallic interface of wire-arc directed energy deposited Inconel 690 component

IF 7 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-05-30 DOI:10.1016/j.msea.2025.148601

Linwei Cai , Zewu Qi , Baoqiang Cong , Qingfu Yang , Yubin Zhou , Zhongbing Chen , Li Lu , Zhenxin Liang , Jianping Yang , Jiankun Xiong , Zhiyong Li , Bojin Qi

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引用次数: 0

Abstract

Constant direct current (DC) arc and ultrasonic frequency pulse (UFP) arc were employed as heat source to fabricate Inconel 690 alloy components by wire-arc directed energy deposition (WADED). The effects of ultrasonic frequency pulse arc on microstructure and mechanical properties of the deposits and interfaces were investigated. With UFP arc, the microstructure of deposit transformed from columnar dendrites to a mixture of columnar dendrites and equiaxed dendrites, and the average grain size reduced by 40 % approximately. Moreover, the carbides in deposit and interface were decreased with UFP arc mode. The deposit in UFP-WADED component presented improved hardness value compared with that in DC-WADED component. Although UFP arc has a minimal influence on the tensile property improvement of deposit, it can particularly enhance the elongation of interface. The refinement of grains and the reduction of carbides with UFP arc were important reasons for the change in properties.

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超声频率脉冲电弧对线弧定向能沉积Inconel 690元件镀层及双金属界面的影响

采用恒直流电弧和超声频率脉冲电弧作为热源，采用线弧定向能沉积（wded）技术制备了Inconel 690合金零件。研究了超声频率脉冲电弧对镀层及界面组织和力学性能的影响。在UFP电弧作用下，沉积层的显微组织由柱状枝晶转变为柱状枝晶与等轴枝晶的混合，平均晶粒尺寸减小约40%。同时，UFP电弧模式降低了镀层和界面中的碳化物含量。与DC-WADED构件相比，UFP-WADED构件的镀层硬度值有所提高。UFP电弧对镀层拉伸性能的改善影响不大，但对界面伸长率的提高作用明显。UFP电弧对晶粒的细化和碳化物的减少是导致性能变化的重要原因。

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.