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

被引：0

作者：

Cai, Linwei ^{[1
]}

Qi, Zewu ^{[1
,2
]}

Cong, Baoqiang ^{[1
]}

Yang, Qingfu ^{[1
]}

Zhou, Yubin ^{[1
]}

Chen, Zhongbing ^{[3
]}

Lu, Li ^{[3
]}

Liang, Zhenxin ^{[3
]}

Yang, Jianping ^{[4
]}

Xiong, Jiankun ^{[4
]}

Li, Zhiyong ^{[5
]}

Qi, Bojin ^{[1
]}

机构：

[1] School of Mechanical Engineering and Automation, Beihang University, Beijing

[2] National Key Laboratory for Remanufacturing, Beijing

[3] Suzhou Nuclear Power Research Institute Co., Ltd., Suzhou

[4] Dongfang Turbine Co., Ltd., Sichuan

[5] Shandong Aotai Electric Co., Ltd., Jinan

来源：

Materials Science and Engineering: A | 2025年 / 941卷

基金：

中国国家自然科学基金;

关键词：

Inconel; 690; alloy; Mechanical properties; Microstructure; Ultrasonic frequency pulse arc; Wire arc directed energy deposition;

D O I：

10.1016/j.msea.2025.148601

中图分类号：

学科分类号：

摘要：

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. © 2025 Elsevier B.V.

引用

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