| 摘要 |
Disclosed are a hypereutectic white iron alloy and articles such as pump components made therefrom. Besides iron and unavoidable impurities the alloy comprises, in weight percent based on the total weight of the alloy, from 3 to 6 C, from 0.01 to 1.2 N, from 0.1 to 4 B, from 3 to 48 Cr, from 0.1 to 7.5 Ni and from 0.1 to 4 Si and, optionally, one or more of Mn, Co, Cu, Mo, W, V, Mg, Ca, rare earth elements, Nb, Ta, Ti, Zr, Hf, Al. |
| 主权项 |
1. A hypereutectic white iron alloy, wherein the alloy comprises, in weight percent based on a total weight of the alloy:Cfrom 3 to 6Bfrom 0.1 to 4Nfrom 0.01 to 1.2Crfrom 3 to 48Nifrom 0.1 to 7.5Sifrom 0.1 to 4Mnfrom 0 to 8Cofrom 0 to 5Cufrom 0 to 5Mofrom 0 to 5Wfrom 0 to 6Vfrom 0 to 12Nbfrom 0 to 6Tifrom 0 to 5Zrfrom 0 to 2(Mg + Ca)from 0 to 0.2one or more rare earth elementsfrom 0 to 3one or more of Ta, Hf, Alfrom 0 to 3, remainder Fe and incidential impurities; and wherein the alloy in an as cast state has a Brinell hardness (HB) of at least 700. |
