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纳米力学科学与技术:国际期刊

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ISSN 打印: 2572-4258

ISSN 在线: 2572-4266

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: 1.3 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: 1.7 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: 0.7 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: 0.00023 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: 0.11 SJR: 0.244 SNIP: 0.521 CiteScore™:: 3.6 H-Index: 14

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DURALIUM BEHAVIOR IN MULTISTAGE ARTIFICIAL AGING PROCESS

卷 8, 册 3, 2017, pp. 223-230
DOI: 10.1615/NanoSciTechnolIntJ.v8.i3.50
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摘要

Duralium is an aluminum alloy that has been used widely in automotive and aerospace industries. As to the properties, it has high strength and ductility and also a light weight. The mechanical properties of duralium can be improved by applying the aging process. Multistage aging of duralium consists of heat treatment at a temperature of 550°C and quenching followed by aging at 150°C for 10 h with three steps of the aging process. The sample morphology was analyzed by using optical microscopy and a scanning electron microscope (SEM). Phase identification of duralium was obtained from X-Ray diffraction (XRD), whereas the mechanical properties were obtained from a tensile test, hardness test, and an impact test. The morphology of duralium in the multistage process showed the increment in precipitate with circular grains. The average particle size obtained from the Scherer equation laid in the range 18–33 nm. Phase identification showed different major peaks in the multistage aging process. There was a weakened peak intensity phenomenon, whereby under aging conditions, the major peak happened at [220], [311], and [323], indicating the precipitate intensity. The highest tensile strength was obtained for duralium at the first aging stage, the highest hardness number was obtained for duralium at the third aging stage, and the highest toughness was obtained for it at the first aging stage. This research introduced new method to improve the duralium properties by a multistage aging process at 150°C for 10 h.

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