On the heterogeneous microstructure and strengthening mechanisms in a laser welding AZ80 magnesium alloy

被引：5

作者：

Liu, Yu ^{[1
,2
]}

Zhu, Gaoming ^{[1
,2
,3
]}

Wang, Yaqi ^{[4
]}

Xin, Zhifeng ^{[5
]}

Hao, Ning ^{[5
]}

Huang, Wei ^{[5
]}

Yi, Sangbong ^{[6
]}

Letzig, Dietmar ^{[3
]}

Lienert, Ulrich ^{[7
]}

Wang, Jie ^{[1
,2
]}

Zeng, Xiaoqin ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[3] Helmholtz Zentrum Hereon, Inst Mat & Proc Design, D-21502 Geesthacht, Germany

[4] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China

[5] Lenovo Beijing Ltd, Consumer & SMB Notebook Dev Ctr, Beijing 100094, Peoples R China

[6] Kumoh Natl Inst Technol, Sch Mat Sci & Engn, Gumi 39177, Gyeongbuk, South Korea

[7] Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany

来源：

SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Magnesium alloy; Laser welding; Mechanical properties; Synchrotron X-ray diffraction; MG ALLOY; JOINT PERFORMANCE; BEHAVIOR; TEXTURE; AZ61;

D O I：

10.1038/s41598-024-73767-0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This study investigates the microstructural characteristics and mechanical properties of a laser welded AZ80 magnesium alloy. The welding process led to the formation of coarse-grained fusion zone (FZ), where a secondary phase formed continuous network. Mg17Al12 precipitation and coarsening of grain boundaries occurred in the heat affected zone. The welded joint exhibited excellent mechanical properties with a yield strength of 202 MPa and a joint efficiency of 92%. The microstructure analysis via EPMA and EBSD in conjunction with synchrotron X-ray diffraction analysis reveals that precipitates and increased dislocation density in the fusion zone are primary strengthening mechanisms for the laser welded AZ80 Mg alloy.

引用

页数：8

共 38 条

[1] Relationship between base metal properties and friction stir welding process parameters [J].

Balasubramanian, V. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 480 (1-2) :397-403

[2] A review of laser welding techniques for magnesium alloys [J].

Cao, X ;

Jahazi, M ;

Immarigeon, JP ;

Wallace, W .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2006, 171 (02) :188-204

[3] Microstructure and mechanical properties of AZ31B Mg alloy fabricated by friction stir welding with pulse current [J].

Chen, Shujun ;

Wang, Lei ;

Jiang, Xiaoqing ;

Yuan, Tao ;

Jiang, Wang ;

Liu, Yongyong .

JOURNAL OF MANUFACTURING PROCESSES, 2021, 71 :317-328

[4] A double molten pool laser welding process for joining magnesium alloys and aluminum alloys: The process, microstructure and mechanical properties of joints [J].

Cui, Mengfei ;

Zheng, Zhentai ;

Du, Peng ;

Chang, Liang .

MATERIALS TODAY COMMUNICATIONS, 2023, 35

[5] First-principles core energies of isolated basal and prism screw dislocations in magnesium [J].

Dan, Yang ;

Trinkle, Dallas R. .

MATERIALS RESEARCH LETTERS, 2022, 10 (06) :360-368

[6] Microstructural observations and tensile fracture behavior of FSW twin roll cast AZ31 Mg sheets [J].

Dorbane, A. ;

Ayoub, G. ;

Mansoor, B. ;

Hamade, R. F. ;

Kridli, G. ;

Shabadi, R. ;

Imad, A. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 649 :190-200

[7] Effect of heat input on microstructure and mechanical properties of TIG-welded semisolid cast AXE622 Mg alloy [J].

Eftekhar, A. Habibi ;

Sadrossadat, S. Mohsen ;

Reihanian, M. .

MATERIALS CHARACTERIZATION, 2022, 184

[8]

Glicksman ME, 2011, PRINCIPLES OF SOLIDIFICATION: AN INTRODUCTION TO MODERN CASTING AND CRYSTAL GROWTH CONCEPTS, P1, DOI 10.1007/978-1-4419-7344-3

[9] Ultrastrong Mg Alloy via Nano-spaced Stacking Faults [J].

Jian, W. W. ;

Cheng, G. M. ;

Xu, W. Z. ;

Yuan, H. ;

Tsai, M. H. ;

Wang, Q. D. ;

Koch, C. C. ;

Zhu, Y. T. ;

Mathaudhu, S. N. .

MATERIALS RESEARCH LETTERS, 2013, 1 (02) :61-66

[10] Research advances on weldability of Mg alloy and other metals worldwide in recent 20 years [J].

Liu, YuQiang ;

Yu, Deshui ;

Zhang, Yan ;

Zhou, JianPing ;

Sun, DaQian ;

Li, HongMei .

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2023, 25 :3458-3481

← 1 2 3 4 →