Grain refinement and mechanical properties of pure aluminum processed by accumulative extrusion bonding

被引：55

作者：

Chen, Xiang ^{[1
,2
]}

Huang, Guang-sheng ^{[1
,2
]}

Liu, Shuai-shuai ^{[1
,2
]}

Han, Ting-zhuang ^{[1
,2
]}

Jiang, Bin ^{[1
,2
]}

Tang, Ai-tao ^{[1
,2
]}

Zhu, Yun-tian ^{[3
]}

Pan, Fu-sheng ^{[1
,2
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[3] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2019年 / 29卷 / 03期

基金：

中国国家自然科学基金;

关键词：

aluminum; accumulative extrusion bonding; microstructure; mechanical properties; strain hardening rate; STRAIN-HARDENING BEHAVIOR; MICROSTRUCTURAL EVOLUTION; MG ALLOY; ARB; DUCTILITY; STRENGTH; DEFORMATION;

D O I：

10.1016/S1003-6326(19)64953-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Ultrafine-grained aluminum processed by a new severe plastic deformation technique, accumulative extrusion bonding (AEB), was investigated. Microstructural characterization indicated good interfacial bonding and an average grain size of similar to 440 nm was obtained after six passes. Tensile testing revealed that the strength reached the maximum value of 195 MPa and the total elongation exceeded 16% after five passes. The hardness was also significantly improved and almost reached saturation after the first pass. SEM fractography of AEB-processed specimens after tensile test showed that failure mode was shear ductile fracture with elongated shallow dimples. Comparison with conventional accumulative roll bonding indicates that this new AEB technique is more effective in refining grain and improving mechanical properties of the specimens.

引用

页码：437 / 447

页数：11

共 39 条

[11] 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

[12] Microstructural evolution of Mg-7Al-2Sn Mg alloy during multi-directional impact forging [J].

Jiang, M. G. ;

Yan, H. ;

Gao, L. ;

Chen, R. S. .

JOURNAL OF MAGNESIUM AND ALLOYS, 2015, 3 (03) :180-187

[13] Mechanical behavior and microstructural evolution upon annealing of the accumulative roll-bonding (ARB) processed Al alloy 1100 [J].

Kwan, Charles ;

Wang, Zhirui ;

Kang, Suk-Bong .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 480 (1-2) :148-159

[14] Progress in cold roll bonding of metals [J].

Li, Long ;

Nagai, Kotobu ;

Yin, Fuxing .

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 2008, 9 (02)

[15] Microstructures and mechanical properties of Al/Zn composites prepared by accumulative roll bonding and heat treatment [J].

Liu, C. Y. ;

Zhang, B. ;

Yu, P. F. ;

Jing, R. ;

Ma, M. Z. ;

Liu, R. P. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 580 :36-40

[16] Microstructure and strength of commercial purity aluminium (AA 1200) cold-rolled to large strains [J].

Liu, Q ;

Huang, X ;

Lloyd, DJ ;

Hansen, N .

ACTA MATERIALIA, 2002, 50 (15) :3789-3802

[17] A new strategy to simultaneous increase in the strength and ductility of AA2024 alloy via accumulative roll bonding (ARB) [J].

Naseri, M. ;

Reihanian, M. ;

Borhani, E. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 656 :12-20

[18] Static mechanical properties and ductility of biomedical ultrafine-grained commercially pure titanium produced by ECAP process [J].

Naseri, Reza ;

Kadkhodayan, Mehran ;

Shariati, Mahmoud .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2017, 27 (09) :1964-1975

[19] Constrained groove pressing and subsequent annealing of Al-Mn-Si alloy: Microstructure evolutions, crystallographic transformations, mechanical properties, electrical conductivity and corrosion resistance [J].

Pouraliakbar, Hesam ;

Jandaghi, Mohammad Reza ;

Khalaj, Gholamreza .

MATERIALS & DESIGN, 2017, 124 :34-46

[20] Analysis of the mechanical properties and deformation behavior of nanostructured commercially pure Al processed by equal channel angular pressing (ECAP) [J].

Reihanian, M. ;

Ebrahimi, R. ;

Tsuji, N. ;

Moshksar, M. M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 473 (1-2) :189-194

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