IMR OpenIR
Overcoming the strength-ductility trade-off of an aluminum matrix composite by novel core-shell structured reinforcing particulates
Zhang, Xuezheng1,2; Chen, Tijun1; Ma, Siming2; Qin, He1; Ma, Jinyuan3
Corresponding AuthorChen, Tijun(chentj@lut.cn)
2021-02-01
Source PublicationCOMPOSITES PART B-ENGINEERING
ISSN1359-8368
Volume206Pages:15
AbstractThe trade-off between strength and ductility of particulate reinforced metal matrix composites (PRMMCs) has been a longstanding puzzle. Here we propose an effective strategy to surmount the inverse relationship between strength and ductility of an A356 Al alloy based PRMMC by in situ synthesizing novel reinforcing particulates with a special core-shell (CS) structure. Such structure features a Ti core inside a dual-layer shell: the inner layer has a nano-grained (similar to 130 nm) heterogeneous structure, and the outer layer possesses a composite structure composed of a (Al,Si)(3)Ti substrate with dense dispersion of nanoparticles. As a result, the obtained composite reinforced with such CS reinforcing particulates (CS composite) achieves an unprecedented tensile elongation to failure of 8.3 +/- 0.8% and a uniform elongation of 7.1 +/- 0.6%, which nearly triples that of the same alloy based composite reinforced with monolithic (Al,Si)(3)Ti particulates (monolithic composite) and equivalent to corresponding matrix alloy while maintaining high ultimate tensile strength of 373 +/- 8.8 MPa and yield strength of 268 +/- 7.9 MPa, equivalent to monolithic composite simultaneously. This special architecture of shell renders itself a high capability of stress bearing and good toughness, and the nanoparticles in outer layer further slower crack development, which significantly postpone crack formation in shell. Subsequent propagation of cracks in Ti core is also constrained remarkably by the transformation-induced plasticity effect occurred ahead of crack tips resulting from stress-induced phase transformation of hcp-Ti into fcc-Ti. These factors lead to highest work hardening rate that undergoes a long plateau and thus overcome the strength-ductility trade-off of A356 alloy based PRMMC.
KeywordMetal matrix composites Core-shell structure Toughening mechanism Strengthening mechanism
Funding OrganizationNational Natural Science Foundation of China ; Basic Scientific Fund of Gansu Universities ; Program for Hongliu Outstanding Talents of Lanzhou University of Technology
DOI10.1016/j.compositesb.2020.108541
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51564035] ; Basic Scientific Fund of Gansu Universities[G2014-07] ; Program for Hongliu Outstanding Talents of Lanzhou University of Technology[2012-03]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Multidisciplinary ; Materials Science, Composites
WOS IDWOS:000600593500007
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158720
Collection中国科学院金属研究所
Corresponding AuthorChen, Tijun
Affiliation1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
2.Purdue Univ, Sch Engn Technol, 401 N Grant St, W Lafayette, IN 47906 USA
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xuezheng,Chen, Tijun,Ma, Siming,et al. Overcoming the strength-ductility trade-off of an aluminum matrix composite by novel core-shell structured reinforcing particulates[J]. COMPOSITES PART B-ENGINEERING,2021,206:15.
APA Zhang, Xuezheng,Chen, Tijun,Ma, Siming,Qin, He,&Ma, Jinyuan.(2021).Overcoming the strength-ductility trade-off of an aluminum matrix composite by novel core-shell structured reinforcing particulates.COMPOSITES PART B-ENGINEERING,206,15.
MLA Zhang, Xuezheng,et al."Overcoming the strength-ductility trade-off of an aluminum matrix composite by novel core-shell structured reinforcing particulates".COMPOSITES PART B-ENGINEERING 206(2021):15.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Xuezheng]'s Articles
[Chen, Tijun]'s Articles
[Ma, Siming]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Xuezheng]'s Articles
[Chen, Tijun]'s Articles
[Ma, Siming]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Xuezheng]'s Articles
[Chen, Tijun]'s Articles
[Ma, Siming]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.