摘要
对国内外含硫易切削非调质钢进行了对比研究,结果表明:国内钢样中硫含量明显高于国外,AlS、氮含量稍低,总氧质量分数基本一致(约为11×10-6);国内外钢样中显微组织基本一致,都是由沿晶分布的铁素体和珠光体所组成,国外钢晶粒较为粗大,国内钢晶粒相对细小;国外钢样中硫化物呈弥散状分布,形态趋于纺锤形,而国内钢样中硫化物分布不均匀,形态趋于细长形。
The comparative study about the sulfur containing free-cutting non-quenched and tempered steels from domestic and abroad is done in this paper. The results show that the sulphur content from domestic samples is higer than that from abroad, and the Als and nitrogen contents are a bit lower, the total oxygen content of both from home and abroad samples are basically consistent, about 11×10^-6 ; The microstructures of the samples both from home and abroad consist of intergranular ferrite and pearlite, but the grain size for the foreign samples is coarser, compared to the domestic samples. The sulphides in foreign samples are dispersed distribution, their shapes tend to be spindle- like; but the sulphides in domesic samples are in uneven distribution, their shapes tend to be elongated.
出处
《炼钢》
CAS
北大核心
2013年第3期58-61,共4页
Steelmaking
基金
安徽省高校省级科学研究重点项目(KJ2013A057)
关键词
易切削非调质钢
硫化物
分布
free-cutting non-quenched and tempered steels
sulphides
distribution
