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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
2018-04-27
发表期刊JOURNAL OF MATERIALS RESEARCH
卷号33期号:8页码:884-897
ISSN0884-2914
摘要

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
收录类别SCI ; EI
语种英语
WOS记录号WOS:000435838600002
关键词[WOS]Instrumented Sharp Indentation ; Mechanical-properties ; Sensing Indentation ; Knoop Indentation ; Strain Fields ; Nanoindentation ; Load ; Directions ; Indenters
WOS研究方向Materials Science
WOS类目Materials Science, Multidisciplinary
项目资助者National Natural Science Foundation of China(11727803 ; Public Welfare Project of Zhejiang Province(2015C31074) ; 11772302 ; 11672356 ; 11502235 ; 11402233)
论文分区Q3
力学所作者排名4
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77640
专题非线性力学国家重点实验室
通讯作者Zhang TH(张泰华)
作者单位1.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
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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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