Title of article
Erosion damage of laser alloyed stainless steel in mercury
Author/Authors
Zherebtsov، نويسنده , , Sergey and Naoe، نويسنده , , Takashi and Futakawa، نويسنده , , Masatoshi and Maekawa، نويسنده , , Katsuhiro، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
9
From page
6035
To page
6043
Abstract
The effect of laser surface alloying of type 316 stainless steel on the erosion resistance in mercury has been investigated. The alloying was produced by melting predeposited Al–Si powder and a portion of underlying substrate with a pulsed Nd:YAG laser beam. The microhardness of the modified layer was found to be 2.5 times higher than that of untreated steel. The erosion test of laser alloyed surface and steel in mercury was carried out by using the electromagnetic impact testing machine. The laser alloyed surface was found to be less damaged after 105 cycles of impacts compared to untreated stainless steel. However, after 106 cycles the erosion resistance of the modified layer is much lower than that of untreated steel. Liquid metal embrittlement in contact with mercury and residual stresses were considered as factors impairing the erosion resistance of the laser alloyed surface.
Keywords
aluminum , Laser surface alloying , Cavitation erosion damage , 316 stainless steel , mercury , Silicon
Journal title
Surface and Coatings Technology
Serial Year
2007
Journal title
Surface and Coatings Technology
Record number
1816029
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