摘要
在超高锰钢中加入不同含量的硼(0.0015%～0.0060%),随着硼含量的增加,在热处理后金相组织中晶界碳化物相应减少,晶内碳化物以粒状和团块状分布;硬度在213～221 HB变化;冲击韧性先升高后降低,最高值为αk=191J/cm2,最低值为αk=165J/cm2。在低冲击应力磨料磨损条件下,随硼含量的增加磨损表面形貌SEM照片切痕变浅,凿坑减少。结果表明,超高锰钢中加入0.003%左右的硼,其综合性能较好。
When adding boron of 0.001 5%-0.006 0% into the super-high manganese steel, and water toughening treated, it was found that with the increasing of boron content, the carbide amount at the grain boundary decreased, and the carbides inside the crystal grain distributed in the form of particle and conglomeration; the hardness of the steel changed between HB 213-221; the impact toughness increased firstly and then reduced, maximum αk=191 J/cm^2, minimum αk=165 J/cm^2. Under the low impact abrasive wear, with the increasing of boron amount the SEM images of the worn surface showed that the chip trace became shallow and the pits reduced. The better performance can be obtained when adding 0.003% boron into the super-high manganese steel.
出处
《铸造》
CAS
CSCD
北大核心
2008年第2期134-136,共3页
Foundry
基金
国家高技术研究发展计划(863计划)2006AA03Z529
关键词
超高锰钢
硼含量
冲击韧性
耐磨性能
磨损表面形貌
super-high manganese steel
boron content
impact toughness
abrasion resistance
wear appearance
