Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Effect of Volume Fraction of Cr Carbide Phase on the Abrasive Wear Behavior of the High Cr White Iron Harcfacing Weld Deposits

고크롬 철계 오버레이용접층의 긁힘마모거동에 미치는 크롬탄화물 양의 영향

  • 백응률 (포항산업과학연구원 소재연구부문)
  • Published : 1998.02.01
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Abstract

The effect of volume fraction of Cr carbide phase (Cr CVF) on the low stress abrasion resistance in the chromium-carbide-type high Cr white iron hardfacing weld deposits has been investigated. In order to examine Cr CVF, a series of alloys with varying Cr CVF by changing chromium and carbon contents and the ratio of Cr/C were employed. The alloys were deposited once or twice on a mild steel plate using the self-shielding flux cored arc welding process. The low stress abrasion resistance of the alloys against sands was measured by the Dry Sand/Rubber Wheel Abrasion Test (RWAT). It was shown that hardness and abrasion resistance increased with increasing Cr CVF within the whole test range (Cr CVF : 0.23-0.64). Both primary Cr carbide and eutectic Cr carbide were particularly effective in resisting wear due to their high hardness.

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References

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