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Journal of KWJS. 2005;23(2):75-80. Published online May 12, 2005.
- Characteristics of Hardness of (Cr, Fe)_7C₃ in the Chromium-Carbide-Type Chromium White Iron Hardfacing Weld Deposits
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Eung-Ryul Baek
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- Abstract
- The effect of chemical constituents of (Cr, Fe)_7C₃ carbide phase on its hardness in the chromium-carbide type Cr white iron hardfacing weld deposits has been investigated. In order to examine (Cr, Fe)_7C₃ carbide phase, a series of filler metals with varying chromium contents was used. The alloys were deposited once or twice on a mild steel plate using the self-shielding flux cored are welding process. The hardness of (Cr, Fe)_7C₃ carbide phase was measured by the micro-Vickers hardness test. It was shown that hardness of (Cr, Fe)_7C₃ carbide phase increased with increasing Cr content in (Cr, Fe)_7C₃ carbide phase. This behavior of the hardness of (Cr, Fe)_7C₃ carbide phase was explained by the types of chemical bonds that hold atoms together in (Cr, Fe)_7C₃ carbide phase.
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