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http://dx.doi.org/10.3795/KSME-A.2017.41.4.307

Study on Laser Cladding of Heat Resisting Steel Using EuTroLoy 16006 Powder(II) - Characteristics of Alloying Elements Distribution of Multi Pass Clad Layer -  

Kim, Jong Do (Division of Marine Engineering, Korea Maritime and Ocean Univ.)
Lee, Eun Jin (Graduate School, Korea Maritime and Ocean Univ.)
Kim, Cheol Gyu (Jonghap Polestar Co., Ltd.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.4, 2017 , pp. 307-312 More about this Journal
Abstract
Laser cladding has some advantages compared to conventional cladding technologies such as arc welding and thermal spraying. Laser cladding produces a metallurgically well-bonded clad layer with a lower dilution ratio and few defects. Based on the characteristics of a 1-pass clad layer with many parameters, which were investigated in a previous report, it was found that it was essential to overlap a 1-pass clad layer when cladding a large area. In this study, the shape differences of multi-pass clad layers with various overlapping ratios were compared. Then, the alloying element distribution of cladding with a certain overlapping ratio was investigated using EDS and EPMA. As the overlapping ratio increased, the length of the clad decreased and its height increased. In addition, the height of the multi-pass cladding was higher than that of the 1-pass cladding under the same condition. The Fe content of the highly diluted first clad was found to be approximately 20 % in an element analysis. However in the area outside of the first clad, the Fe content was decreased to 10 % as a result of minimum dilution, and a uniform distribution of elements was found.
Keywords
Overlapping Ratio; Multi-Pass Clad; Hardness; Alloying Element Distribution;
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Times Cited By KSCI : 2  (Citation Analysis)
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