摘要
以履带板用钢ZG31Mn2SiREB为研究对象,在880℃正常淬火前对其进行1200℃高温扩散退火预处理,研究了预处理工艺对其淬火组织和力学性能的影响。结果表明:ZG31Mn2SiREB钢铸态组织粗大不均,直接淬火后组织及显微硬度分布极不均匀,冲击韧度较低;经高温扩散退火预处理后,最终组织均匀细小,显微硬度分布均匀,冲击韧度明显提高。
The per-treatment process of high-temperature diffusing annealing at 1200 ℃ for ZG31Mn2SiREB track plate steel was taken before normal quenching at 880 ℃.The effects of pre-heat treatment process on quenching microstructure and mechanical properties were studied.The results show that the microstructure of ZG31Mn2SiREB as-cast is thick and uneven,the distribution of microstructure and microhardness is extremely uneven afterdirect quenching,impact toughness is low.The microstructure and microhardness is extremely even after high-temperature diffusing annealing,the impact toughness greatly improves.
出处
《热加工工艺》
CSCD
北大核心
2010年第20期190-192,195,共4页
Hot Working Technology
基金
河南省高校科技创新人才支持计划(2009HASTIT023)
国家自然科学基金资助项目(50771042)
关键词
履带板
高温扩散退火
显微组织
冲击韧度
track plate
high-temperature diffusing annealing
microstructure
impact toughness
