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研究了微量Ｍｇ在３５ＣｒＮｉ３ＭｏＶ钢中的作用与机理。结果表明，适量Ｍｇ使其室温和－４０℃冲击功ＡｋＶ提高６～２６Ｊ，并降低了韧脆转变温度、改善了断裂韧度和高温持久性能。钢中最佳Ｍｇ含量范围为０．００３０％～０．００６５％。
The effect and mechanism of trace Mg in 35CrNi3MoV steel were studied. The results show that Mg increases the room temperature and the impact energy at -40 ℃ by 6 ~ 26J, decreases the ductile-brittle transition temperature and improves the fracture toughness and high-temperature durability. The optimum Mg content in the steel ranged from 0.0030% to 0.0065%.