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国际多尺度计算工程期刊

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ISSN 打印: 1543-1649

ISSN 在线: 1940-4352

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.4 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 2.2 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00034 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.46 SJR: 0.333 SNIP: 0.606 CiteScore™:: 3.1 H-Index: 31

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Nonuniformity Effect of Surface-Nanocrystalline Materials in Nanoindentation Test

卷 4, 册 1, 2006, pp. 183-196
DOI: 10.1615/IntJMultCompEng.v4.i1.120
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摘要

In the present research, microstructures of the surface-nanocrystalline Al alloy material are observed and measured based on the transmission electron microscopy (TEM) technique, and the corresponding mechanical behaviors are investigated experimentally and theoretically. In the experimental research, the nanoindentation test method is used, and the load and microhardness curves are measured, which strongly depend on the grain size and grain size nonuniformity. Two kinds of the nanoindentation test methods are adopted: the randomly selected loading point method and the continuous stiffness method. In the theoretical modeling, based on the microstructure characteristics of the surface-nanocrystalline Al alloy material, a dislocation pile-up model considering the grain size effect and based on the Mott theory is presented and used. The hardness-indent depth curves are predicted and modeled.

对本文的引用
  1. Wu Bo, Liang Lihong, Ma Hansong, Wei Yueguang, A trans-scale model for size effects and intergranular fracture in nanocrystalline and ultra-fine polycrystalline metals, Computational Materials Science, 57, 2012. Crossref

  2. CHEN LI, WEI YUEGUANG, CHARACTERIZATIONS OF SIZE EFFECT AND OVERALL MECHANICAL BEHAVIOR OF NANOCRYSTALLINE METALS, International Journal of Applied Mechanics, 05, 01, 2013. Crossref

  3. Chen Li, Wei Yueguang, Overall mechanical behavior of nanocrystalline materials accompanied by damage evolution on grain boundaries, International Journal of Damage Mechanics, 23, 1, 2014. Crossref

  4. Wu Bo, Wei Yue Guang, A Computational Model for Intergranular Fracture in Nanocrystalline and Ultra-Fine Polycrystalline Metals, Materials Science Forum, 633-634, 2009. Crossref

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