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Direct Observation on the Evolution of Shear Banding and Buckling in Tungsten Fiber Reinforced Zr-Based Bulk Metallic Glass Composite
J. H. Chen; Y. Chen; M. Q. Jiang; X. W. Chen; H. M. Fu; H. F. Zhang; L. H. Dai
2014
Source PublicationMetallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN1073-5623
Volume45AIssue:12Pages:5397-5408
AbstractThe evolution of micro-damage and deformation of each phase in the composite plays a pivotal role in the clarification of deformation mechanism of composite. However, limited model and mechanical experiments were conducted to reveal the evolution of the deformation of the two phases in the tungsten fiber reinforced Zr-based bulk metallic glass composite. In this study, quasi-static compressive tests were performed on this composite. For the first time, the evolution of micro-damage and deformation of the two phases in this composite, i.e., shear banding of the metallic glass matrix and buckling deformation of the tungsten fiber, were investigated systematically by controlling the loading process at different degrees of deformation. It is found that under uniaxial compression, buckling of the tungsten fiber occurs first, while the metallic glass matrix deforms homogeneously. Upon further loading, shear bands initiate from the fiber/matrix interface and propagate in the metallic glass matrix. Finally, the composite fractures in a mixed mode, with splitting in the tungsten fiber, along with shear fracture in the metallic glass matrix. Through the analysis on the stress state in the composite and resistance to shear banding of the two phases during compressive deformation, the possible deformation mechanism of the composite is unveiled. The deformation map of the composite, which covers from elastic deformation to final fracture, is obtained as well.
description.department[chen, j. h. ; chen, y. ; jiang, m. q.] chinese acad sci, inst mech, state key lab nonlinear mech, beijing 100190, peoples r china. [chen, x. w.] china acad engn phys, inst syst engn, mianyang 621999, sichuan, peoples r china. [fu, h. m. ; zhang, h. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [dai, l. h.] chinese acad sci, inst mech, state key lab nonlinear mech, beijing 100864, peoples r china. [dai, l. h.] beijing inst technol, state key lab explos sci & technol, beijing 100081, peoples r china. ; dai, lh (reprint author), chinese acad sci, inst mech, state key lab nonlinear mech, beijing 100864, peoples r china. ; lhdai@lnm.imech.ac.cn
KeywordPhase Dendrite Dispersions Matrix Composites Mechanical-properties Deformation Behaviors Amorphous-alloys Toughness Fracture Microstructure Dissipation Thickness
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73193
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
J. H. Chen,Y. Chen,M. Q. Jiang,et al. Direct Observation on the Evolution of Shear Banding and Buckling in Tungsten Fiber Reinforced Zr-Based Bulk Metallic Glass Composite[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2014,45A(12):5397-5408.
APA J. H. Chen.,Y. Chen.,M. Q. Jiang.,X. W. Chen.,H. M. Fu.,...&L. H. Dai.(2014).Direct Observation on the Evolution of Shear Banding and Buckling in Tungsten Fiber Reinforced Zr-Based Bulk Metallic Glass Composite.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,45A(12),5397-5408.
MLA J. H. Chen,et al."Direct Observation on the Evolution of Shear Banding and Buckling in Tungsten Fiber Reinforced Zr-Based Bulk Metallic Glass Composite".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 45A.12(2014):5397-5408.
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