Investigation of high-strength and high-precision pulse-current-assisted diffusion bonding of Ti-6Al-4V alloy

被引：1

作者：

Zhang, Qiuguang ^{[1
,2
]}

Wu, Tong ^{[1
]}

Yang, Jia ^{[1
]}

Fu, Mengchun ^{[1
]}

Xu, Jiujie ^{[1
]}

Zhou, Hangze ^{[1
]}

Huang, Zhao ^{[1
]}

Wang, Ce ^{[1
,2
]}

Lin, Panpan ^{[1
]}

Lin, Tiesong ^{[1
]}

Yue, Xin ^{[1
,3
]}

He, Peng ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Precis Welding & Joining Mat & Struc, Harbin 150001, Peoples R China

[2] Zhengzhou Res Inst, Harbin Inst Technol, Zhengzhou 450018, Peoples R China

[3] Suzhou Res Inst, Harbin Inst Technol, Suzhou 215128, Peoples R China

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2025年 / 133卷

基金：

中国国家自然科学基金;

关键词：

Pulsed-current-assisted diffusion bonding; Ti-6Al-4V; Post-bonding heat treatment; Electromigration effect; High strength; High precision; MECHANICAL-PROPERTIES; TITANIUM-ALLOY; 304-STAINLESS-STEEL; INTERLAYER; DYNAMICS; FRICTION;

D O I：

10.1016/j.jmapro.2024.12.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, a new strategy for the fabrication of high-strength and high-precision diffusion bonding joints is proposed by combining high-pressure pulsed-current-assisted diffusion bonding (PCADB) at a low temperature for a short time and post-bonding heat treatment (PBHT). High-quality bonding joints were obtained by this technique. When the bonding temperature was 550 degrees C and 600 degrees C, the tensile strength reached 768.2 MPa and 862.1 MPa respectively after PBHT, which was equal to 84.0 % and 94.6 % of that of the base material. Meanwhile, the deformation rate at the bonding temperatures of 550 degrees C and 600 degrees C was controlled at 1.08 % and 1.12 %, respectively. The microstructure characterization of needle-like grains and sub-grains demonstrates the role of the high pressure and the in-situ heating induced by pulsed current. Furthermore, the numerical calculations were performed and the relevant microstructure evolution models were established.

引用

页码：1025 / 1037

页数：13

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