IMECH-IR  > 非线性力学国家重点实验室
A Review on Heterogeneous Nanostructures: A Strategy for Superior Mechanical Properties in Metals
Ma Y(马彦); Yang MX(杨沐鑫); Yuan FP(袁福平); Wu XL(武晓雷)
Corresponding AuthorYuan, Fuping(fpyuan@lnm.imech.ac.cn)
Source PublicationMETALS
2019-05-01
Volume9Issue:5Pages:32
ISSN2075-4701
AbstractGenerally, strength and ductility are mutually exclusive in homogeneous metals. Nanostructured metals can have much higher strength when compared to their coarse-grained counterparts, while simple microstructure refinement to nanoscale generally results in poor strain hardening and limited ductility. In recent years, heterogeneous nanostructures in metals have been proven to be a new strategy to achieve unprecedented mechanical properties that are not accessible to their homogeneous counterparts. Here, we review recent advances in overcoming this strength-ductility trade-off by the designs of several heterogeneous nanostructures in metals: heterogeneous grain/lamellar/phase structures, gradient structure, nanotwinned structure and structure with nanoprecipitates. These structural heterogeneities can induce stress/strain partitioning between domains with dramatically different strengths, strain gradients and geometrically necessary dislocations near domain interfaces, and back-stress strengthening/hardening for high strength and large ductility. This review also provides the guideline for optimizing the mechanical properties in heterogeneous nanostructures by highlighting future challenges and opportunities.
Keywordstrength ductility heterogeneous nanostructures back-stress hardening strain gradient
DOI10.3390/met9050598
Indexed BySCI
Language英语
WOS IDWOS:000478818700115
WOS KeywordSTRAIN-RATE SENSITIVITY ; AUSTENITIC STAINLESS-STEEL ; SEVERE PLASTIC-DEFORMATION ; HIGH-TENSILE DUCTILITY ; MEDIUM-ENTROPY ALLOY ; GRAIN-SIZE ; HIGH-STRENGTH ; MICROSTRUCTURAL EVOLUTION ; BACK STRESS ; FRACTURE-BEHAVIOR
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding ProjectNational Key R&D Program of China[2017YFA0204402] ; National Key R&D Program of China[2017YFB0202802] ; National Natural Science Foundation of China[11672313] ; National Natural Science Foundation of China[11572328] ; National Natural Science Foundation of China[51601204] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
Classification二类/Q1
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79761
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Ma Y,Yang MX,Yuan FP,et al. A Review on Heterogeneous Nanostructures: A Strategy for Superior Mechanical Properties in Metals[J]. METALS,2019,9(5):32.
APA 马彦,杨沐鑫,袁福平,&武晓雷.(2019).A Review on Heterogeneous Nanostructures: A Strategy for Superior Mechanical Properties in Metals.METALS,9(5),32.
MLA 马彦,et al."A Review on Heterogeneous Nanostructures: A Strategy for Superior Mechanical Properties in Metals".METALS 9.5(2019):32.
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