【摘要】 探讨了合金元素对马氏体时效不锈钢各项力学性能的影响规律,结果表明:影响强度和硬度的最主要合金元素是Ti,Cu是最有效的改善马氏体时效强化不锈钢的断裂韧性的合金元素,合金元素Ni和Mo对强度、硬度以及韧性的影响不是很大。并在此基础上进一步优化了马氏体时效不锈钢的合金成分,该成分的合金钢具有超高强度(Rm=1 610MPa)的同时保持了高韧性(KIC=94 MPa.m1/2),达到了超高强度高韧性合金钢的标准。更多还原

【Abstract】 The effects of alloying elements on the mechanical properties of the maraging stainless steel are studied.Results show that the principal alloying element affecting the strength and hardness of the steel is element Ti,and Cu is the element that can most effectively improve the fracture toughness of the maraging stainless steel,and as far as the effects on the strength and toughness of the steel is concerned alloying elements Ni and Mo are of little significance.On the basis of the studies the alloying compositions of the maraging stainless steel are further optimized and thus the alloy steel containing such compositions possesses super high strength (Rm=1 610 MPa) and high toughness (KIC=94 MPa·m1/2) simultaneously and conforms with the standards of the super high strength and high toughness alloying steel.更多还原