Effect of Interdendritic Precipitations on the Mechanical Properties of GBF or EMS Processed Al-Zn-Mg-Cu Alloys

被引：6

作者：

Park, Sangeun ^{[1
]}

Kayani, Saif Haider ^{[1
]}

Kim, Hyungrae ^{[2
]}

Jung, Im Doo ^{[3
]}

Reddy, N. S. ^{[1
]}

Euh, Kwangjun ^{[4
,5
]}

Seol, Jae Bok ^{[1
]}

Kim, Jung Gi ^{[1
]}

Sung, Hyokyung ^{[1
]}

机构：

[1] Gyeongsang Natl Univ, Dept Mat Engn & Convergence Technol, Jinju 52828, South Korea

[2] Korea Aerosp Ind, Sacheon 52529, South Korea

[3] Ulsan Natl Inst Sci & Technol, Dept Mech Engn, Ulsan 44919, South Korea

[4] Korea Inst Mat Sci, Dept Aluminum, Chang Won 51508, South Korea

[5] Korea Univ Sci & Technol UST, Adv Mat Engn, Daejeon 34113, South Korea

来源：

CRYSTALS | 2021年 / 11卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

Al-Zn-Mg-Cu alloy; GBF process; EMS process; precipitates; ALUMINUM-ALLOY; SECONDARY PHASES; MICROSTRUCTURE; EVOLUTION; CAST; TEMPERATURE; DIFFRACTION; STRENGTH; BEHAVIOR;

D O I：

10.3390/cryst11101162

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The effects of nanoprecipitations on the mechanical properties of Al-Zn-Mg-Cu alloys after GBF (gas bubbling filtration) and EMS (electromagnetic stirring) casting were investigated. Dendritic cell structures were formed after GBF processing, while globular dendritic structures were nucleated after EMS processing. Equiaxed cell sizes were smaller in the EMS-processed specimens compared to the GBF-processed specimens, confirmed by EBSD (electron backscatter diffraction) analysis. Nanoprecipitations of eta ' phases inside of dendrites were observed by TEM (transmission electron microscope), and other Fe-bearing compounds were located in the dendritic boundaries. The yield strength of the T4 and T6 heat-treated specimens was close to 400 MPa and 500 MPa, respectively. Fractographic analysis was performed to investigate the effect of precipitations on tensile fracture.

引用

页数：11

共 47 条

[1] Microstructure and mechanical properties of a large billet of spray formed Al-Zn-Mg-Cu alloy with high Zn content [J].

Bai Pucun ;

Hou Xiaohu ;

Zhang Xiuyun ;

Zhao Chunwang ;

Xing Yongming .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 508 (1-2) :23-27

[2]

CHANG YC, 1992, THESIS CARNEGIE MELL

[3]

Chung T.-F., 2018, International Journal of Lightweight Materials and Manufacture, V1, P142, DOI 10.1016/j.ijlmm.2018.06.002

[4] Transmission electron microscopy investigation of separated nucleation and in-situ nucleation in AA7050 aluminium alloy [J].

Chung, Tsai-Fu ;

Yang, Yo-Lun ;

Huang, Bo-Ming ;

Shi, Zhusheng ;

Lin, Jianguo ;

Ohmura, Takahito ;

Yang, Jer-Ren .

ACTA MATERIALIA, 2018, 149 :377-387

[5] High temperature tensile properties, fracture behaviors and nanoscale precipitate variation of an Al-Zn-Mg-Cu alloy [J].

Dai, Pan ;

Luo, Xian ;

Yang, Yanqing ;

Kou, Zongde ;

Huang, Bin ;

Zang, Jinxin ;

Ru, Jigang .

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2020, 30 (01) :63-73

[6]

DEGISCHER HP, 1980, Z METALLKD, V71, P231

[7] Effects of the casting temperature on microstructure and mechanical properties of the squeeze-cast Al-Zn-Mg-Cu alloy [J].

Fan, C. H. ;

Chen, Z. H. ;

He, W. Q. ;

Chen, J. H. ;

Chen, D. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 504 (02) :L42-L45

[8] Structure-property models in Al-Zn-Mg-Cu alloys: A critical experimental assessment of shape castings [J].

Ghiaasiaan, Reza ;

Shankar, Sumanth .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 733 :235-245

[9] Quantitative metallography of precipitating and secondary phases after strengthening treatment of net shaped casting of Al-Zn-Mg-Cu (7000) alloys [J].

Ghiaasiaan, Reza ;

Amirkhiz, Babak Shalchi ;

Shankar, Sumanth .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 698 :206-217

[10] Structure of age-hardened aluminium-copper alloys [J].

Guinier, A .

NATURE, 1938, 142 :569-570

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