Microstructure and mechanical properties of pure Mg after spiral equal-channel extrusion

被引：2

作者：

Li, Jinghui ^{[1
]}

Li, Fuguo ^{[2
]}

Liang, Shan ^{[3
]}

Huang, Zhenyi ^{[1
]}

Zhang, Mingya ^{[1
]}

机构：

[1] Anhui Univ Technol, Sch Met Engn, Maanshan 243002, Peoples R China

[2] Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian, Peoples R China

[3] Anhui Univ Technol, Sch Innovat Educ, Maanshan, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2021年 / 37卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Pure magnesium; severe plastic deformation; microstructure evolution; mechanical properties; recrystallisation; SEVERE PLASTIC-DEFORMATION; MAGNESIUM ALLOY; SHEAR LOCALIZATION; FLOW BEHAVIOR; TEMPERATURE; EVOLUTION;

D O I：

10.1080/02670836.2021.1901366

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

One of the severe plastic deformation techniques, elliptical cross-sectioned spiral equal-channel extrusion (ECSEE) was successfully applied to the pure Mg processed at 200 degrees C and the microstructure and properties were studied. The observation shows that the grains are refined to 2.1 mu m after 2-pass deformation. The proportion of high-angle grain boundary increases to 49.4% after 6-pass. The minimum time of grain boundary rotating 30 degrees is about 0.847 ms, and the maximum time is 2.34 ms. TEM observation illustrates the grain morphology evolves from shear bands to recrystallised grains. There was a significant increase in strength to similar to 180 MPa but a decrease in the ductility (similar to 12%) of pure Mg after 6-pass ECSEE. The refinement mechanism is mainly divided into mechanical and physical refinement.

引用

页码：384 / 394

页数：11

共 50 条

[11] Comparison of microstructure and mechanical properties of pure copper processed by twist extrusion and equal channel angular Pressing
Bar Bahadori, Sh Ranj
Dehghani, K.
Mousavi, S. A. A. Akbari
MATERIALS LETTERS, 2015, 152 : 48 - 52
[12] Mechanical properties of pure aluminium processed by equal channel angular extrusion
Mabuchi, M
Higashi, K
JOURNAL OF MATERIALS SCIENCE LETTERS, 1998, 17 (03) : 215 - 217
[13] Microstructure evolution and mechanical properties of AZ 31 Mg alloy processed by equal channel angular extrusion
Jin, L
Lin, DL
Mao, DL
Zeng, XQ
Ding, WJ
MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS, 2005, 488-489 : 601 - 604
[14] Microstructure and mechanical properties affecting crack growth behaviour in AA6060 produced by equal-channel angular extrusion
Meyer, L. W.
Sommer, K.
Halle, T.
Hockauf, M.
NANOMATERIALS BY SEVERE PLASTIC DEFORMATION IV, PTS 1 AND 2, 2008, 584-586 : 815 - 820
[15] Microstructure and properties of pure titanium processed by equal-channel angular pressing at room temperature
Zhao, Xicheng
Fu, Wenjie
Yang, Xirong
Langdon, Terence G.
SCRIPTA MATERIALIA, 2008, 59 (05) : 542 - 545
[16] Microstructure and mechanical properties after annealing of equal-channel angular pressed interstitial-free steel
Hazra, Sujoy S.
Pereloma, Elena V.
Gazder, Azdiar A.
ACTA MATERIALIA, 2011, 59 (10) : 4015 - 4029
[17] Mechanical properties and microstructure of AA1050 after ECAE (Equal Channel Angular Extrusion)
Kim, K. J.
Yang, D. Y.
Yoon, J. W.
NUMIFORM 2010, VOLS 1 AND 2: DEDICATED TO PROFESSOR O. C. ZIENKIEWICZ (1921-2009), 2010, 1252 : 981 - +
[18] Mechanical and wear properties of ultrafine-grained pure Ti produced by multi-pass equal-channel angular extrusion
Purcek, G.
Saray, O.
Kul, O.
Karaman, I.
Yapici, G. G.
Haouaoui, M.
Maier, H. J.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 517 (1-2): : 97 - 104
[19] Influence of Equal Channel Angular Pressing and Cyclic Extrusion Compression on the Microstructure Evolution and Mechanical Properties of Pure Aluminum
Abd El Aal, Mohamed Ibrahim
MATERIALS, 2024, 17 (20)
[20] Equal-channel angular extrusion of beryllium
R. D. Field
C. T. Necker
K. T. Hartwig
J. F. Bingert
S. R. Agnew
Metallurgical and Materials Transactions A, 2002, 33 : 965 - 972

← 1 2 3 4 5 →