Microhardness, Microstructure and Composition Behavior of Stainless Steel 304 Laser Surface Alloyed with Silicon

摘要

Laser surface alloying (LSA) of SUS 304 with silicon was investigated. When the impinged energy density was adjusted to be 100 Wmm~(-2), the LSA layer retained the rapidly solidified microstructure with cracks dispersing within the layer. At energy densities greater than 147 Wmm~(-2), it retained the granular structure with no crack. Its microhardness increased nearly in proportion to Si content.