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Strain rate sensitivity of sintered silver nanoparticles using rate-jump indentation
Long X; Tang WB; Feng YH(冯义辉); Chang C; Keer LM; Yao Y
发表期刊INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
2018-05-01
卷号140页码:60-67
ISSN0020-7403
摘要Nanoindentation experiments were performed at room temperature on pressure-less sintered silver nanoparticles (AgNP) samples. Two representative die attach solder materials: sintered electrically conductive silver adhesive and conventional Sn-3.0Ag center dot 0.5Cu solder were investigated. A novel technique of multiple strain-rate jumps is adopted accompanied by the continuous stiffness measurement, which can effectively determine the strain rate sensitivity (SRS) with good accuracy. Different strain rates and indentation depths are considered to obtain the nanomechanical properties such as hardness and Young's modulus. Compared with Young's modulus of sintered AgNP, the effect of applied strain rate is more influential to the hardness. In the loading stage, the SRS exponent decreases due to a smaller variation of hardness at a greater indentation depth. In the holding stage prior to the unloading of the applied indentation force, the creep displacement is relatively insensitive to the applied strain rate, however, the creep strain rate decays exponentially and the corresponding stress exponents are determined. (C) 2018 Elsevier Ltd. All rights reserved.
关键词Silver Nanoparticles Strain Rate Sensitivity Nanoindentation Strain Rate Sensitivity Creep Strain Rate Stress Exponent
DOI10.1016/j.ijmecsci.2018.02.035
收录类别SCI ; EI
语种英语
WOS记录号WOS:000432765300006
关键词[WOS]MECHANICAL-PROPERTIES ; NANOINDENTATION ; TEMPERATURE ; CREEP ; EVOLUTION ; TESTS ; SN
WOS研究方向Engineering ; Mechanics
WOS类目Engineering, Mechanical ; Mechanics
项目资助者National Natural Science Foundation of China(51508464 ; Natural Science Foundation of Shaanxi Province(2017JM1013) ; Fundamental Research Funds for the Central Universities(3102016ZY017) ; Astronautics Supporting Technology Foundation of China(2017-HT-XG) ; 11772257)
论文分区一类
力学所作者排名3
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文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77498
专题非线性力学国家重点实验室
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GB/T 7714
Long X,Tang WB,Feng YH,et al. Strain rate sensitivity of sintered silver nanoparticles using rate-jump indentation[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2018,140:60-67.
APA Long X,Tang WB,冯义辉,Chang C,Keer LM,&Yao Y.(2018).Strain rate sensitivity of sintered silver nanoparticles using rate-jump indentation.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,140,60-67.
MLA Long X,et al."Strain rate sensitivity of sintered silver nanoparticles using rate-jump indentation".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 140(2018):60-67.
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