铝对高氮18CrMnB钢淬透性的影响  

Influence of Aluminium on Hardenability of High Nitrogen 18CrMnB Steels

作　　者：魏吉祥[1] 李文卿[1] 李耀文[2] 许洪新[2] 

机构地区：[1]北京科技大学材料科学与工程系 [2]北京科技大学太原钢铁公司

出　　处：《北京科技大学学报》1991年第2期141-145,共5页Journal of University of Science and Technology Beijing

摘　　要：用显微径迹照像法研究了870℃端淬时钢中硼的分布和氮的固定情况,并用C_β参量表示钢中氮被固定的程度。结果表明,C_β值越大,淬透性越好,核参量很好地控制高氮18CrMnB钢的淬透性。C_β=14.5-27.5,可保证试验钢种有高而稳定的淬透性。The distribution of B and N in 18CrMnB steel during the hardening at 870℃ is investigated by means of the microphotography, and CB is used as a parameter to show the distribution of N in the steel. The results obtained are as follows: the hardenability increases with parameter Cβ, and if its value is between 14.5 though 27.5, the high hardenability of 18CrMnB steel is obtained. Cβ is a useful parameter for controlling the hardenability of this steel.

关 键 词：铝 淬透性 18CRMNB钢 硼钢 

分 类 号：TG142.13[一般工业技术—材料科学与工程]