Effect of the range of particle sizes on the heat resistance of chrome-nickel alloys |
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Authors: | H H Maksymovych A V Filipovs'kyi V A Lopushans'kyi |
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Affiliation: | (1) Karpenko Physicomechanical Institute, Ukrainian Academy of Sciences, L'viv |
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Abstract: | We study the effect of the range of particle sizes in KhN45Yu alloy and 12Kh18N10T and 15Kh25T steels on their heat resistance at temperatures of 800, 1000, and 1200°C in air on a base of up to 1000 h. It is shown that materials with a coarse-grained structure exhibit a much higher oxidation susceptibility than those with a fine-grained structure. For the materials under investigation, the oxidation rates are greater in the stressed state and increase as a result of thermal cycling.Translated from Fiziko-Khimicheskaya Mekhanika Materialov, Vol. 30, No. 5, pp. 45–49, September–October, 1994. |
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