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An Aluminide Surface Layer Containing Lower-Al on Ferritic-Martensitic Steel Formed by Lower-Temperature Aluminization
Guo, S.; Wang, Z. B.; Lu, K.; zbwang@imr.ac.cn
2015
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume31Issue:12Pages:1268-1273
AbstractAn aluminide (AlFe and alpha-(FeAl)) surface layer containing lower-Al was formed on ferritic-martensitic steel P92 by means of surface mechanical attrition treatment (SMAT) combined with a duplex aluminization process at lower temperatures, i.e. a packed aluminization followed by a diffusion annealing treatment below its tempering temperature. Indentation tests indicated that the lower-Al surface layer formed on the SMAT sample is more resistant to cracking and has better adhesion to the substrate in comparison with the Al5Fe2 layer formed on the as-received sample after the duplex aluminization process. Isothermal steam oxidation measurements showed that the oxidation resistance is increased significantly by the lower-Al surface layer due to the formation of a protective (Fe,Cr)A(2)O(4) layer. The rate constant of oxidation was estimated to decrease from similar to 0.849 mg(2)cm(-4)h(-1) of the as-received material to similar to 0.011 mg(2)cm(-4)h(-1) of the AlFe layer at 700 degrees C. Copyright (C) 2015, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved.
description.department[guo, s. ; wang, z. b. ; lu, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
KeywordSurface Mechanical Attrition Treatment (Smat) Ferritic-martensitic Steel Lower-temperature Aluminization Aluminide Steam Oxidation
Funding OrganizationMinistry of Science and Technology of the People's Republic of China [2012CB932201]; National Natural Science Foundation of China [91226204]; Key Research Program of Chinese Academy of Sciences [KGZD-EW-T06]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74621
Collection中国科学院金属研究所
Corresponding Authorzbwang@imr.ac.cn
Recommended Citation
GB/T 7714
Guo, S.,Wang, Z. B.,Lu, K.,et al. An Aluminide Surface Layer Containing Lower-Al on Ferritic-Martensitic Steel Formed by Lower-Temperature Aluminization[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2015,31(12):1268-1273.
APA Guo, S.,Wang, Z. B.,Lu, K.,&zbwang@imr.ac.cn.(2015).An Aluminide Surface Layer Containing Lower-Al on Ferritic-Martensitic Steel Formed by Lower-Temperature Aluminization.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,31(12),1268-1273.
MLA Guo, S.,et al."An Aluminide Surface Layer Containing Lower-Al on Ferritic-Martensitic Steel Formed by Lower-Temperature Aluminization".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 31.12(2015):1268-1273.
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