连铸坯凝固偏析和高强热轧盘条的组织遗传性

钢铁研究学报, 2007, 19(1): 44-0.

连铸坯凝固偏析和高强热轧盘条的组织遗传性

(1. 南京理工大学材料科学与工程系, 江苏南京, 210094

4.4. 安徽工业大学金属材料与加工重点实验室, 安徽马鞍山 243002)

(1. Department of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

2.2. School of Material Science and Engineering, Anhui University of Technology, Ma′anshan, 243002, Anhui, China

4. 4. The Key Lab of Material and Processing, Anhui University of Technology, Ma′anshan 243002, Anhui, China)

关键词：热轧盘条;偏析;连铸坯;遗传

Solidification Segregation of Continuous Cast Steel Billets andStructure Heredity of High Strength Hot Rolled Rods

HUANG Zhenyi , CHEN Guang , NIU Yaran , WANG Guangpeng , HUANG Yixin , LIU Wenxue

Keywords： hot rod;segregation;continuous cast steel billet;heredity

通过对热轧盘条和连铸坯光学显微镜、扫描电镜观察和能谱分析以及化学成分检验，研究了高碳热轧盘条组织与连铸坯凝固偏析的关系。结果表明：碳、锰严重偏析是导致高强度预应力盘条中偏析带形成的主要原因。偏析带组织为非索氏体，其强度高，塑性差，在轧制过程中易产生微裂纹和孔洞；连铸坯的偏析会直接遗传给热轧盘条，严重影响热轧盘条的组织和性能。因此，针对连铸坯偏析的遗传性，制定了改进措施，经生产证明其效果显著。

The relationship between the element segregation of high carbon and high strength hot rolled rods and solidification structure is studied by SEM observation and chemical analysis. The results show that the formation of segregation band is mainly caused by serious segregation of C and Mn the segregation band is not sorbitic structure and has high strength and low plasticity. There are microcrack and microhole in them. The radical cause is serious segregation of continuous cast steel billets. The hot rods inherit segregation of continuous cast steel billets directly and the segregation greatly influences structure and property of hot rolled rods. According to heredity of segregation of continuous cast steel billets, effective measures have been taken against segregation.

参考文献

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网