摘要
通过实验室真空感应炉试验,研究了超低氧条件下钢中复合非金属夹杂物的形成。研究发现:在含有一定硫的超低氧钢中高熔点氧化物夹杂很少,大部分为MnS。钢中Al2O3的尺寸较MgO-Al2O3系夹杂要大。以高熔点夹杂物为异质形核核心析出的MnS能显著提高钢材的疲劳寿命,此种复合夹杂物的形成与钢液成分、高熔点夹杂物的尺寸有关。
Investigation was made in laboratorial on formation of complex inclusions in steels which contained ultra- low oxygen by vacuum induction furnace. It is found that MnS is the main inclusion in the ultra-low oxygen steel containing a certain S content, and the number of high melting point oxide inclusions is smaller. The size of Al2O3 inclusion is often larger than that of MgO-Al2O3 spinel. MnS which precipitated from high melting point inclu- sions as heterogeneous nucleus can significantly improve the fatigue life of the steel, the formation of such complex inclusions steel is related to steel compositions and the size of high melting point inclusions.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2014年第1期12-15,共4页
Journal of Iron and Steel Research
基金
国家重点基础研究发展计划项目(2010CB630806)
关键词
超低氧
疲劳
复合夹杂物
寿命
ultra-low oxygen
fatigue ； complex inclusion ； life
