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Influence of solid solution strengthening on the local mechanical properties of single crystal and ultrafine-grained binary Cu-AlX solid solutions
Maier-Kiener, Verena1; An, Xianghai2,3; Li, Linlin2; Zhang, Zhefeng2; Pippan, Reinhard4; Durst, Karsten5
Corresponding AuthorDurst, Karsten(k.durst@phm.tu-darmstadt.de)
2017-12-28
Source PublicationJOURNAL OF MATERIALS RESEARCH
ISSN0884-2914
Volume32Issue:24Pages:4583-4591
AbstractIn this work, the influence of Al-solutes on the mechanical behavior of Cu-AlX solid solutions has been studied using indentation strain rate jump tests for single crystalline and ultrafine-grained (UFG) microstructures from high pressure torsion (HPT) processing. Al-solutes in Cu classically lead to a solid solution strengthening, coupled with a decrease in stacking fault energy, which influences also the grain size after HPT processing. For all alloys, a higher hardness is found at lower indentation depths, which can be nicely described by a modified Nix/Gao model down to 100 nm indentation depth. Among the single crystals, the largest size effects are found for the higher solute contents, indicating a stronger work hardening at small length scales for the solid solutions. The dilute UFG solid solutions showed a strong softening after a strain rate reduction test, with a pronounced transient region. Cu-A115 is, however, quite stable, showing abrupt changes in hardness without strong transients. This indicates that solute solution strengthening does not only influence the indentation size effect and structure formation during HPT processing but also stabilizes the grain structure during subsequent deformation.
Keywordnanostructure nano-indentation hardness
Funding OrganizationAustrian Federal Government within framework of the COMET Funding Program (MPPE) ; ERC (USMS) ; National Natural Science Foundation of China (NSFC)
DOI10.1557/jmr.2017.320
Indexed BySCI
Language英语
Funding ProjectAustrian Federal Government within framework of the COMET Funding Program (MPPE)[837900A7.19] ; ERC (USMS)[340185] ; National Natural Science Foundation of China (NSFC)[51331007] ; National Natural Science Foundation of China (NSFC)[51471170]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000419001500014
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80431
Corresponding AuthorDurst, Karsten
Affiliation1.Univ Leoben, Dept Phys Met & Mat Testing, A-8700 Leoben, Austria
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
3.Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
4.Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria
5.Tech Univ Darmstadt, Phys Met, D-64287 Darmstadt, Germany
Recommended Citation
GB/T 7714
Maier-Kiener, Verena,An, Xianghai,Li, Linlin,et al. Influence of solid solution strengthening on the local mechanical properties of single crystal and ultrafine-grained binary Cu-AlX solid solutions[J]. JOURNAL OF MATERIALS RESEARCH,2017,32(24):4583-4591.
APA Maier-Kiener, Verena,An, Xianghai,Li, Linlin,Zhang, Zhefeng,Pippan, Reinhard,&Durst, Karsten.(2017).Influence of solid solution strengthening on the local mechanical properties of single crystal and ultrafine-grained binary Cu-AlX solid solutions.JOURNAL OF MATERIALS RESEARCH,32(24),4583-4591.
MLA Maier-Kiener, Verena,et al."Influence of solid solution strengthening on the local mechanical properties of single crystal and ultrafine-grained binary Cu-AlX solid solutions".JOURNAL OF MATERIALS RESEARCH 32.24(2017):4583-4591.
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