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Laser cladding of a featureless iron-based alloy
被引:28
|作者:
Aghasibeig, Maniya
[1
]
Fredriksson, Hasse
[1
]
机构:
[1] Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden
关键词:
Laser cladding;
Iron-based alloys;
Featureless phase;
Epsilon phase;
COMPOSITE COATINGS;
MO;
SI;
MICROSTRUCTURE;
BEHAVIOR;
PHASE;
D O I:
10.1016/j.surfcoat.2012.08.013
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
Laser cladding experiments with powder injection technique were carried out to create coatings of Fe-8.1Cr6.4Mn-5.3Si-6.9Mo-3.6C alloy on AISI 1018 steel substrates using a diode laser. Analysis of the clad layers showed that an almost featureless structure was formed at different dilutions between 1% and 4%. The featureless phase with a high hardness of 1155 HV was characterized as a metastable solid solution of e phase. However, the featureless structure appeared to be very brittle with numerous cracks. After heat-treatment, it decomposed into a bainitic structure with a high hardness of 884 HV. (c) 2012 Elsevier B.V. All rights reserved.
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页码:32 / 37
页数:6
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