A construction machinery bucket part includes a body including a low alloy cast iron, and a wear resistant tip cast bonded to an end portion of the body and including a white cast iron. The construction machinery bucket part includes dissimilar materials, and has improved economic feasibility and wear resistance.

A construction machinery bucket part includes a body including a low alloy cast iron, and a wear resistant tip cast bonded to an end portion of the body and including a white cast iron. The construction machinery bucket part includes dissimilar materials, and has improved economic feasibility and wear resistance.

Disclosed is an abrasive and corrosive wear-resistant high chromium cast iron containing: 1.0 to 3.0 wt % of carbon (C); 0.5 to 2.0 wt % of silicon (Si); 0.5 to 2.0 wt % of manganese (Mn); 25.0 to 36.0 wt % of chromium (Cr); 0.5 to 3.0 wt % of nickel (Ni); 0.3 to 2.0 wt % of molybdenum (Mo); 0.5 to 1.5 wt % of copper (Cu); 0.2 to 2.0 wt % of vanadium (V); 0.03 to 0.3 wt % of titanium (Ti); more than 0 wt % but not more than 0.03 wt % of niobium (Nb); more than 0 wt % but not more than 0.03 wt % of zirconium (Zr); more than 0 wt % but not more than 0.3 wt % of nitrogen (N); more than 0 wt % but not more than 0.03 wt % of cobalt (Co); and iron (Fe) balance and other unavoidable impurities. Further disclosed are a method of preparing the same cast iron and a part of a FGD apparatus of a thermoelectric power plant.

A hypereutectic chromium white iron alloy which comprises, in weight percent based on the total weight of the alloy, from 1.5 to 2.85 carbon, from 0.01 to 1.2 nitrogen, from 0.1 to 1.4 boron, from 3 to 34 chromium, from 0.1 to 7.5 Ni, and from 0.1 to 4 Si. The alloy may optionally comprise one or more additional elements, i.e., manganese, cobalt, copper, molybdenum, tungsten, vanadium, niobium, titanium, zirconium, magnesium and/or calcium, one or more rare earth elements, and one or more of tantalum, hafnium, aluminum. The remainder of the alloy is constituted by iron and unavoidable (incidential) impurities. Articles cast from the alloy, especially cryogenically hardened articles, are also disclosed.

A hypereutectic chromium white iron alloy which comprises, in weight percent based on the total weight of the alloy, from 1.5 to 2.85 carbon, from 0.01 to 1.2 nitrogen, from 0.1 to 1.4 boron, from 3 to 34 chromium, from 0.1 to 7.5 Ni, and from 0.1 to 4 Si. The alloy may optionally comprise one or more additional elements, i.e., manganese, cobalt, copper, molybdenum, tungsten, vanadium, niobium, titanium, zirconium, magnesium and/or calcium, one or more rare earth elements, and one or more of tantalum, hafnium, aluminum. The remainder of the alloy is constituted by iron and unavoidable (incidential) impurities. Articles cast from the alloy, especially cryogenically hardened articles, are also disclosed.

A casting of a white cast iron alloy and a method of producing the casting are disclosed. A white cast alloy is also disclosed. The casting has a solution treated microstructure that comprises a ferrous matrix of retained austenite and chromium carbides dispersed in the matrix, with the carbides comprising 15 to 60% volume fraction of the alloy. The matrix composition comprises: manganese: 8 to 20 wt %; carbon: 0.8 to 1.5 wt %; chromium: 5 to 15 wt %; and iron: balance (including incidental impurities).

A casting of a white cast iron alloy and a method of producing the casting are disclosed. A white cast alloy is also disclosed. The casting has a solution treated microstructure that comprises a ferrous matrix of retained austenite and chromium carbides dispersed in the matrix, with the carbides comprising 15 to 60% volume fraction of the alloy. The matrix composition comprises: manganese: 8 to 20 wt %; carbon: 0.8 to 1.5 wt %; chromium: 5 to 15 wt %; and iron: balance (including incidental impurities).

A highly impact resistant ductile iron casting is made from a specified high nickel content ductile iron composition and post-treated with a specified heating and cooling profile to achieve an elongation exceeding the ASTM A536 (60-40-18) standard, and meeting or exceeding Charpy V Notch impact resistance at 20 F. of greater than 11.0 ft.lbs.

A highly impact resistant ductile iron casting is made from a specified high nickel content ductile iron composition and post-treated with a specified heating and cooling profile to achieve an elongation exceeding the ASTM A536 (60-40-18) standard, and meeting or exceeding Charpy V Notch impact resistance at 20 F. of greater than 11.0 ft.lbs.

A highly impact resistant ductile iron casting is made from a specified high nickel content ductile iron composition and post-treated with a specified heating and cooling profile to achieve an elongation exceeding the ASTM A536 (60-40-18) standard, and meeting or exceeding Charpy V Notch impact resistance at 20 F. of greater than 11.0 ft. lbs.