Study on the Durable Factors of the Grain Size in 18CrNiMo7-6 by Heating and Cooling Method
Study researches durable factors of the grain size in 18CrNiMo7-6 by heating and cooling method. Results show that alloying elements Nb and Al have a strong pining effect on the grain boundaries, Al/N ratio between 2.0-2.5 can promote the grain not to grow up for a long time, and refine grains significantly with furnace heating and after carburizing-quenching once, and can inhibit the abnormal growth of individual grains.
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
J. X. Liu et al., "Study on the Durable Factors of the Grain Size in 18CrNiMo7-6 by Heating and Cooling Method", Advanced Materials Research, Vols. 194-196, pp. 228-231, 2011