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, economize energy and can prevent high temperature oxidation of magnesium alloys. Meanwhile, little was studied on higher strain rate superplasticity of the commercial magnesium alloys with large grain size... High strain rate superplasticity of AZ31 alloy ZHOU Hai-tao(周海涛), JIANG Yong-feng(蒋永锋), ZHONG Jian-wei(钟建伟), ZHAO Zhong-kai(赵仲恺), LI Qing-bo(李庆波) 1. School of Materials Science and Engineering......
, and precipitate of internal oxides A12O3. Key words: K44 superalloy; high temperature oxidation; oxidation kinetics 1 Introduction In comparison with advanced aircraft engine, the work environment of gas... (Al+Ti), the high-temperature mechanical properties are high. The oxidation behavior of the superalloy K44 is rarely studied up to now. In this study, oxidation kinetics and scales composition of K44......
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results showed that a mixture oxide consisting of main TiO2 rather than protective Al2O3 was produced and their oxidation kinetics was very complicated[9-12]. For structural materials at high temperature, their high temperature oxidation resistance is a very important aspect during their service life. In this work, the oxidation behaviors of a kind of Ti3Al-based alloy was investigated......
reduces the oxidation rate during the initial stage by preventing the formation of Ni-riched scales and promoting an earlier development of an exclusive external alumina layer on the alloy surface. Key... O2 has been investigated by Yi et al[7], who found that the oxidation rate was increased by the presence of Si during the early stages of oxidation, but was reduced after longer times due......
HIGH-TEMPERATURE OXIDATION OF FGH96 P/M SUPERALLOY Y. W. Zhang1,J.X. Dong2,M.C. Zhang2,F.J. Liu2 (1.Central Iron and Steel Research Institute, Beijing 100081, China;2.School of Materials Science and Engineering, University of Science and Technology Beijing,Beijing 100083, China) Abstract:High temperature oxidation behaviors of FGH96 P/M superalloy have been studied in air at temperatures......
oxidation resistance[6]. During the early oxidation of Mg-Y alloys (w(Y)=0.82%, 1.09%, 4.32%, 25%) at high temperatures, the increase of Y led to the decrease of the oxidation rate[7]. On the other hand... alloys are listed in Table 1. As expected, the oxidation rate increased rapidly with an increase in the oxidation temperature. It is seen that the addition of Y is more effective than that of Y2O3......
function and improve the high-temperature oxidation resistance of the composites. 4 Conclusions 1) The oxidation mass gain rate of CeO2-SiO2/ Ni-W-P composites increases with increasing oxidation... High-temperature oxidation behavior of CeO2-SiO2/Ni-W-P composites XU Rui-dong(徐瑞东)1, WANG Jun-li(王军丽)2, GUO Zhong-cheng(郭忠诚)1, WANG Hua(王 华)1 1. Faculty of Metallurgy and Energy......
. Ag-SnO2 contact materials fabricated by IO method have high resistance to arcing, high welding adhesion resistance, high hardness and strength. But the oxidation of Ag-Sn alloy is difficult when the content of Sn exceed 6%(mass fraction) in silver alloy. In order to enhance the oxidation rate of Ag-Sn alloy, we add Cu and Bi to Ag-Sn alloy. Consequently, the objective of this paper is to investigate......
of oxidation rate does not continue at elevated temperatures. Due to the high stress-growth effect at 900 ℃, the thin Al2O3 layer cannot completely prevent further oxidation of the alloy underneath. When... oxygen was studied. Fe-15Cu-5Al alloy presents an irregular high-temperature oxidation behavior between 700-1 000 ℃, though the kinetic curve at each temperature can be approximately considered......
