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Mechanical Properties and Microstructures of Commercial-Purity Aluminum Processed by Rotational Accelerated Shot Peening Plus Cold Rolling
Liu YF1; Cao Y1; Zhou H1; Chen XF(陈雪飞)2; Liu Y1; Xiao LR1; Huan XW1; Zhao YH1; Zhu YT1,3
Source PublicationADVANCED ENGINEERING MATERIALS
2020
Volume22Issue:1Pages:8
ISSN1438-1656
Abstract

Commercial-purity aluminum with 99.7% purity is processed by rotational accelerated shot peening (RASP) and cold-rolling. RASP samples are rolled at room temperature to a thickness reduction of 20% and 30%, for the purpose of surface roughness reduction and strengthening. Detailed microstructural characterization and hardness tests reveal that cold-rolling cause grain growth at the surfaces of RASP samples from approximate to 472 to approximate to 1000 nm. Moderate cold-rolling is effective in smoothing the surface of RASP samples, while improving strength and maintaining ductility. However, cold-rolling to more than 30% thickness reduction eventually diminishes the gradient nanostructure. During cold-rolling of RASP samples, a transition zone with strong strain incompatibility is noticed by a sharp rise in hardness at some point of the hardness-distribution curve from the surface to the core of the sample. This transition zone is a result of quick generation of geometrically necessary dislocations. Although the transition zone with strong strain incompatibility is short-lived, it is anticipated to be common among gradient-nanostructured materials under cold-rolling condition.

Keywordcommercial-purity aluminum gradient structures mechanical properties microstructures plastic deformation
DOI10.1002/adem.201900478
Indexed BySCI ; EI
Language英语
WOS IDWOS:000508434300006
WOS KeywordNANOSTRUCTURED SURFACE-LAYER ; HIGH-PRESSURE TORSION ; GRAIN-REFINEMENT ; STAINLESS-STEEL ; METALS ; SIZE ; DEFORMATION ; TEMPERATURE ; EVOLUTION ; STRENGTH
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Classification二类
Ranking2
ContributorLiu, Ying
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81329
Collection非线性力学国家重点实验室
Affiliation1.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nano & Heterogeneous Mat Ctr, Nanjing 210094, Peoples R China;
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
3.North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
Recommended Citation
GB/T 7714
Liu YF,Cao Y,Zhou H,et al. Mechanical Properties and Microstructures of Commercial-Purity Aluminum Processed by Rotational Accelerated Shot Peening Plus Cold Rolling[J]. ADVANCED ENGINEERING MATERIALS,2020,22(1):8.
APA Liu YF.,Cao Y.,Zhou H.,Chen XF.,Liu Y.,...&Zhu YT.(2020).Mechanical Properties and Microstructures of Commercial-Purity Aluminum Processed by Rotational Accelerated Shot Peening Plus Cold Rolling.ADVANCED ENGINEERING MATERIALS,22(1),8.
MLA Liu YF,et al."Mechanical Properties and Microstructures of Commercial-Purity Aluminum Processed by Rotational Accelerated Shot Peening Plus Cold Rolling".ADVANCED ENGINEERING MATERIALS 22.1(2020):8.
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