Changing regularity of structure and phase of HDA-steel under diffusion treatment

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.
会议录名称	CONTRIBUTIONS OF SURFACE ENGINEERING TO MODERN MANUFACTURING AND REMANUFACTURING
	2002
会议名称	3rd International Conference on Surface Engineering
会议日期	OCT 10-13, 2002
会议地点	CHENGDU, PEOPLES R CHINA
摘要	In 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记录号	WOS:000180624600091
ISBN号	7-81057-661-5
收录类别	CPCI-S
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58937
专题	力学所知识产出(1956-2008)
通讯作者	Yu, SX (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Yu SX,Xia Y,Yao M,et al. Changing regularity of structure and phase of HDA-steel under diffusion treatment[C]CONTRIBUTIONS OF SURFACE ENGINEERING TO MODERN MANUFACTURING AND REMANUFACTURING,2002.

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