【摘要】 研究了中高碳量Ｆｅ－２Ｎｉ－０．５Ｍｏ－ｘＣ及Ｆｅ－２Ｃｕ－ｘＣ粉末锻造钢经淬火－回火热处理后的综合力学性能。由４６００合金粉制造的Ｆｅ－２Ｎｉ－０．５Ｍｏ－０．６Ｃ成分和由水雾化铁粉制造的Ｆｅ－２Ｃｕ－０．５Ｃ成分的粉末锻造钢具有良好的综合力学性能。前者抗拉强度达１５７０ＭＰａ，硬度为ＨＲＣ４５．２，冲击韧性为３１．４Ｊ／ｃｍ２。后者抗拉强度达１０９０ＭＰａ，硬度为ＨＲＣ４０．７，冲击韧性为３８．０Ｊ／ｃｍ２。可以满足要求具有高强度、良好韧性以及较高耐磨性的结构零件的需要。更多还原

【Abstract】 Combination mechaniCal properties of Fe-2Ni-0. 5Mo--xC and Fe-2Cu-xC powder forged steel with median and high carbon contents after quenching and t6mpering treatment have been studied. The Fe-2Ni-0. 5Mo-0. 6C POwder forged steel made from 4600 alloy powder and the Fe-2Cu -0. 5C powder forged steel mode from water atomized iron powder have good combination mechanical properties. The former has an ultimate tensile strength of 1570MPa, a hardness of HRC 45.2 and an impact toughness of 31. 4J/cm2,and the later has an ultimate tensile strength of 1090MPa,a hardness of HRC 40.7 and an impact toughness of 38. 0J/cm2. They can satisfy demands for structural parts with high Strength, good toughness and superior wear resistance.更多还原