The effect of V-Nb on the growth of austenite grains in 17CrNiMo6 gear steel  

作　　者：Zhao Yaping Wang Maoqiu Yuan Jiguo 

机构地区：[1]Special Steel Branch, Baoshan Iron ＆ Steel Co. , Ltd. , Shanghai 200940, China [2]Central Iron and Steel Research Institute, Beijing 100081, China

出　　处：《Baosteel Technical Research》2008年第2期46-50,共5页宝钢技术研究（英文版）

摘　　要：This study researches the effect of V-Nb on the growth of austenite grains in 17CrNiMo6 carburized gear steel. Results show that the carbonitride in V and Nb acts as second-phase particles in the steel, which can be used to block the migration of grain boundaries and the thinning of the austenite grains. This causes the crystals in the V-Nb microalloy 17CrNiMo6 steel to coarsen and the temperature to rise, thus reducing the cost of the carbonization that follows processing on the gears.This study researches the effect of V-Nb on the growth of austenite grains in 17CrNiMo6 carburized gear steel. Results show that the carbonitride in V and Nb acts as second-phase particles in the steel, which can be used to block the migration of grain boundaries and the thinning of the austenite grains. This causes the crystals in the V-Nb microalloy 17CrNiMo6 steel to coarsen and the temperature to rise, thus reducing the cost of the carbonization that follows processing on the gears.

关 键 词：V-Nb microalloy 17CrNiMo6 steel austenite grain pinning effect 

分 类 号：TG142.25[一般工业技术—材料科学与工程] TH132.41[金属学及工艺—金属材料]