Alternative TitleEffect of Hf on Microstructure and Property of ODS-FeCrAl Alloy
吴飒建1; 李静1; 刘实1
Source Publication原子能科学技术
Other AbstractIn order to study the effect of a small amount of Hf on the microstructure and property of ODS-FeCrAl alloy,two kinds of 14 Cr-ODS-FeCrAl alloys were prepared by mechanical alloying and subsequent hot isostatic pressing.The microstructure,mechanical property,air oxidation resistance at 1200℃and steam corrosion resistance at 1200℃were tested.TEM results show that the oxide precipitate phases of YAlO3 oxide in the two kinds of alloys are fine and dispersed,while the addition of Hf promotes the formation of Y2Hf2O7 nano-oxide with finer particle size in the alloy matrix.Due to the Orowan strengthening mechanism,the two kinds of alloys have excellent mechanical property at room temperature and high temperature.The results of XRD and SEM show that the surface of the two kinds of alloys form uniform and denseα-Al2O3 film after air oxidation at 1200℃and steam corrosion at 1200℃,which protects the alloy.The addition of Hf is beneficial to form more uniformα-Al2O3 films under the condition of 1200℃steam corrosion,to inhibit the outward diffusion of Al3+,and to avoid the formation of cavities at the internal grain boundary of the alloy.
KeywordODS合金 显微组织 氧化物析出相 力学性能 高温空气氧化 高温水蒸气腐蚀
Indexed ByCSCD
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Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
吴飒建,李静,刘实. Hf对ODS-FeCrAl合金微观组织及性能的影响[J]. 原子能科学技术,2020,54.0(004):648-656.
APA 吴飒建,李静,&刘实.(2020).Hf对ODS-FeCrAl合金微观组织及性能的影响.原子能科学技术,54.0(004),648-656.
MLA 吴飒建,et al."Hf对ODS-FeCrAl合金微观组织及性能的影响".原子能科学技术 54.0.004(2020):648-656.
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