Effect of boron addition on the microstructure and mechanical properties of 6.5% V-5% W high speed steel

Title
Effect of boron addition on the microstructure and mechanical properties of 6.5% V-5% W high speed steel
Author(s)
백응률비타아스티니유스프라세요[유스프라세요]
Keywords
GRAIN-BOUNDARY SEGREGATION; ALLOYING ELEMENTS; FRACTURE-BEHAVIOR; HOT DUCTILITY; IRON
Issue Date
201212
Publisher
KOREAN INST METALS MATERIALS
Citation
METALS AND MATERIALS INTERNATIONAL, v.18, no.6, pp.923 - 931
Abstract
The effect of adding 0.04% additional boron to 6.5% V-5% W high speed steel was investigated. The microstructure characterization, phase identification, and carbide identification of the materials were performed using SEM/EDS and XRD. The cell size and carbide volume fraction were examined using image analysis software. The boron distribution was observed by PTA Boron Tracking. The addition of 0.04% more boron to a HSS alloy exerted a cell refining effect on the sample. The cell refinement of dendritic structures in the alloy containing boron may be attributed to the constitutional supercooling effect associated with the fairly small distribution coefficient for boron in iron. The addition of boron increases the bending strength of the material by more than 10%, as well as increasing its hardness.
URI
http://hdl.handle.net/YU.REPOSITORY/26757http://dx.doi.org/10.1007/s12540-012-6003-6
ISSN
1598-9623
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공과대학 > 신소재공학부 > Articles
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