Variable-parameter NiTi ultrasonic spot welding with Cu interlayer

被引：18

作者：

Ao, S. S. ^{[1
]}

Zhang, W. ^{[1
,2
]}

Li, C. J. ^{[1
]}

Oliveira, J. P. ^{[3
,4
]}

Zeng, Z. ^{[5
]}

Luo, Z. ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

[2] Univ Groningen, Fac Sci & Engn, Dept Adv Prod Engn, Groningen, Netherlands

[3] NOVA Univ Lisbon, NOVA Sch Sci & Technol, Dept Mech & Ind Engn, UNIDEMI, Caparica, Portugal

[4] Univ NOVA Lisboa, NOVA Sch Sci & Technol, Dept Mat Sci, CENIMAT I3N, Caparica, Portugal

[5] Univ Elect Sci & Technol China, Sch Mech & Elect Engn, Chengdu, Sichuan, Peoples R China

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2021年 / 36卷 / 05期

关键词：

Ultrasonic; welding; NiTi; interlayer; parameter; microstructure; performance; fracture; MECHANICAL-PROPERTIES; AL-ALLOY; MICROSTRUCTURE; THICKNESS; INTERFACE; BEHAVIOR; METAL;

D O I：

10.1080/10426914.2020.1843676

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

NiTi thin sheets were ultrasonic spot welded with a Cu interlayer, where different welding vibration amplitudes were applied to study the influence on the surface and interface microstructural characteristics, phase transformation behavior and mechanical response of the joints, which aimed to enhance the joint performance by proper optimization of the process parameters. An excellent bonding interface was achieved when an optimized vibration amplitude was applied, with a recrystallized microstructure formed in the Cu foil side near the bonding interface, which helped to improve the mechanical performance of the joints. Joints made with vibration amplitude of 55 mu m had an improved strength compared to the NiTi base material.

引用

页码：599 / 607

页数：9

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