4．5Ni钢淬透性试验研究  

Experimental Study of Hardenability of 4.5 Ni Steel

作　　者：王任甫[1] 胡素坤[1] 孙民[1] 常海[1] 

机构地区：[1]洛阳船舶材料研究所

出　　处：《材料开发与应用》1995年第5期15-19,共5页Development and Application of Materials

摘　　要：通过４．５Ｎｉ钢淬透性曲线、等温转变曲线及常规力学性能试验，研究了４．５Ｎｉ钢的淬透性；同时分析了合金元素对淬透性的影响；并用临界冷却速度预测了厚板能否淬透。研究结果表明，由于合金元素的交互作用，４．５Ｎｉ钢的淬透性优良，不但８０ｍｍ厚板可以淬透，而且只要严格控制化学成分，同时提高淬火剂的冷却强度，厚度不大于１００ｍｍ的板材也能淬透。A study of the hardenability of 4.5 Ni steel was conducted by the isothermal transformation curve and the measurements of hardenability curves and mechanical properties,with the analyses of the influ-ences of the alloying elements on the hardenability given. A prediction of the hardenability of thick plates is given by mean s of cooling rates. The results in dicate that because of the in teraction of the alloying elements 4.5 Ni steel has good hardenability not only for plates with a thickness of 80mm but also for those with a thickness of less than 100 mm,as long as their compositions are strictly controlled with the cooling intensity of hardener increased.

关 键 词：船体结构钢 淬透性 热处理 

分 类 号：TG142.41[一般工业技术—材料科学与工程] TG162.8[金属学及工艺—金属材料]