IMECH-IR  > 力学所知识产出(1956-2008)
Changing regularity of structure and phase of HDA-steel under diffusion treatment
Yu SX; Xia Y(夏原); Yao M; Yu, SX (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
Source PublicationCONTRIBUTIONS OF SURFACE ENGINEERING TO MODERN MANUFACTURING AND REMANUFACTURING
2002
Conference Name3rd International Conference on Surface Engineering
Conference DateOCT 10-13, 2002
Conference PlaceCHENGDU, PEOPLES R CHINA
AbstractIn this paper, the changing regularity of structure and phase of hot dip aluminizing (HDA) steel after diffusion treatment at different temperature and time was studied by means of SEM and XRD. The results showed that, after diffusion treatment at 550degreesCsimilar to650degreesC, the surface layer of the HDA coating, which is the main source to apply aluminum to the HDA coating, gradually becomes thinner, even disappears. With diffusion temperature increasing between 550degreesC and 650degreesC and time prolonging, the transition layer in HDA coating gradually becomes thicker. As a result of diffusion treatment at 700degreesCsimilar to900degreesC, the aluminum in the HDA coating quickly evaporated due to without protecting the surface of HDA-steel with protective materials. This gives rise to the appearing of internal oxidation in the transition layer. With diffusion temperature increasing between 700degreesC and 900degreesC, diffraction intension of FeAl phase in the transition layer in XRD spectrums becomes stronger, but Fe2Al5 phase still exists in the transition layer. After diffusion treatment at 900degreesC, the thickness of FeAl phase becomes from 25 mum to 50 mum. FeAl phase existing in the transition layer strikingly improves oxidation resistance of HDA coating on steel at high temperature in air.
WOS IDWOS:000180624600091
ISBN7-81057-661-5
Indexed ByCPCI-S
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58937
Collection力学所知识产出(1956-2008)
Corresponding AuthorYu, SX (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Yu SX,Xia Y,Yao M,et al. Changing regularity of structure and phase of HDA-steel under diffusion treatment[C]. CHENGDU, ERHUAN RD, CHENGDU 610031, SICHUAN, PEOPLES R CHINA:SOUTHWEST JIAOTONG UNIV PRESS,2002.
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