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Spherical indentation method for estimating equibiaxial residual stress and elastic-plastic properties of metals simultaneously
Peng GL1; Lu ZK2; Ma Y1; Feng YH(冯义辉)2; Huan Y(郇勇)2; Zhang TH(张泰华)1
Source PublicationJOURNAL OF MATERIALS RESEARCH
2018-04-27
Volume33Issue:8Pages:884-897
ISSN0884-2914
Abstract

For instrumented spherical indentation, the presence of equibiaxial residual stress in a material will lead the indentation load-depth curve to shift upward or downward. The load differences between the stressed and stress-free curves were used to estimate the equibiaxial residual stress. Using dimensional analysis and finite element simulations, the equibiaxial residual stress was related to the elastic-plastic parameters and the relative load difference at a fixed normalized indentation depth (h/R = 0.1). Based on these expressions, and together with the method for determining elastic-plastic parameters established in our previous work, an integrated method was proposed to estimate the equibiaxial residual stress and elastic-plastic parameters of metals simultaneously via instrumented spherical indentation. This method avoids preknowledge of the yield strength and measuring the contact area. Applications were illustrated on Al 2024, Al 7075, and Ti Grade 5 with introduced stresses. By comparing the results determined by this integrated method with the reference values, the maximum relative error is generally within +/- 10% for the yield strength, within +/- 15% for the elastic modulus, and within +/- 20% for the equibiaxial

DOI10.1557/jmr.2018.57
Indexed BySCI ; EI
Language英语
WOS IDWOS:000435838600002
WOS KeywordInstrumented Sharp Indentation ; Mechanical-properties ; Sensing Indentation ; Knoop Indentation ; Strain Fields ; Nanoindentation ; Load ; Directions ; Indenters
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(11727803 ; Public Welfare Project of Zhejiang Province(2015C31074) ; 11772302 ; 11672356 ; 11502235 ; 11402233)
ClassificationQ3
Ranking4
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77640
Collection非线性力学国家重点实验室
Corresponding AuthorZhang TH(张泰华)
Affiliation1.Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310014, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Peng GL,Lu ZK,Ma Y,et al. Spherical indentation method for estimating equibiaxial residual stress and elastic-plastic properties of metals simultaneously[J]. JOURNAL OF MATERIALS RESEARCH,2018,33(8):884-897.
APA Peng GL,Lu ZK,Ma Y,Feng YH,Huan Y,&Zhang TH.(2018).Spherical indentation method for estimating equibiaxial residual stress and elastic-plastic properties of metals simultaneously.JOURNAL OF MATERIALS RESEARCH,33(8),884-897.
MLA Peng GL,et al."Spherical indentation method for estimating equibiaxial residual stress and elastic-plastic properties of metals simultaneously".JOURNAL OF MATERIALS RESEARCH 33.8(2018):884-897.
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