摘要
H13钢作为钢管轧制用芯棒,对其冲击韧性有一定要求。生产中发现某电渣重熔H13钢芯棒冲击韧性偏低。本文通过光学显微镜以及扫描电镜等手段分析了钢中块状共晶碳化物以及非金属夹杂物。结果表明,冲击韧性低的主要原因是钢中存在带状组织、大块的共晶碳化物以及非金属夹杂物。非金属夹杂物中发现了带有棱角的（Ti,V）CN型氮化物、圆形的Al_2O_3和Ca O·Al_2O_3,以及包覆着Al_2O_3和Mg O·Al_2O_3核心的方形氮化物。
H13 steel is used as mandrel for steel tube rolling,it has certain requirements of impact toughness.It was found in production that the impact toughness of H13 steel mandrel remelted by electroslag remelting was low.Bulk eutectic carbides and nonmetallic inclusions in steel were analyzed by means of optical microscope and scanning electron microscope.The results show that the main causes of low impact toughness are strip structure,eutectic carbides and nonmetallic inclusions.Angular（Ti,V）CN nitride,round Al_2O_3and Ca O·Al_2O_3,and square nitride coated with the cores of Al_2O_3and Mg O·Al_2O_3are found in non-metallic inclusions.
作者
彭飞
王鹏
张立德
PENG Fei;WANG Peng;ZHANG Lide(Shanghai Branch, Gamesa Wind （Tianjin） Co., Ltd., Shanghai 200060, China;Tianjin Sairui Machine Equipment Co., Ltd., Tianjin 300301, China;Harbin Electric Corporation （QHD） Heavy Equipment Co., Ltd., Qinhuangdao 066206, China)
出处
《热加工工艺》
CSCD
北大核心
2018年第7期258-262,共5页
Hot Working Technology
关键词
H13钢芯棒
冲击韧性
带状组织
共晶碳化物
非金属夹杂物
H13 steel mandrel
impact toughness
banded structure
eutectic carbides
nonmetallic inclusions
