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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

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ISSN Печать: 1093-3611

ISSN Онлайн: 1940-4360

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: 0.4 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: 0.1 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: 0.00005 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: 0.07 SJR: 0.198 SNIP: 0.48 CiteScore™:: 1.1 H-Index: 20

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INFLUENCE OF SUBSTRATE COMPOSITION, OXIDE SCALE MORPHOLOGY AND OTHER PHYSICAL PARAMETERS ON THE RESIDUAL STRESSES IN ALUMINA SCALES DEVELOPED AT HIGH TEMPERATURE ON FeCrAl ALLOYS

Том 2, Выпуск 3, 1998, pp. 369-379
DOI: 10.1615/HighTempMatProc.v2.i3.60
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Residual stresses in the oxide scale are determined at room temperature by X-ray diffraction using the sin2 Ψ method on various FeCrAl alloys developing an alpha-alumina scale after oxidation tests at 1200°C and 1350°C. Experimental results show that:
- Residual compressive stresses in the alumina scale depend strongly on the morphology of scale: for compact oxide scale developed on a "strong" alloy with oxide dispersions such as MA 956, the stresses are higher than those determined in porous, cellular or buckled scales developed on a "weak" alloy.
- The residual stress level increases with increasing compactness, oxide scale thickness, cooling rate and substrate thickness. Moreover, as the experimental stress level is always lower than the calculated stress level using an elastic model, it is suggested that stress relaxation occurs during cooling and that an elasto-viscoplastic model has to be developed in order to account for the experimental stresses. The first results show an agreement between experimental data and calculations.

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