Effects of Zr addition on evolution behavior of inclusions in EH36 shipbuilding steel: from casting to welding

被引：26
|
作者：
Zou, Xiao-dong [1 ]
Sun, Jin-cheng [1 ]
Zhao, Da-peng [1 ]
Matsuura, Hiroyuki [2 ]
Wang, Cong [1 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
[2] Univ Tokyo, Dept Mat Engn, Tokyo 1138656, Japan
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2018年 / 25卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Inclusion; Zr; Acicular ferrite; Shipbuilding steel; Evolution behavior; HEAT-AFFECTED ZONE; LOW-CARBON STEELS; ACICULAR FERRITE; GRAIN-GROWTH; MG ADDITION; MICROSTRUCTURE; TI; NUCLEATION; TOUGHNESS; ALLOY;
D O I：
10.1007/s42243-018-0022-6
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The inclusions evolution behavior in the continuous casting slab, rolled plates, and simulated welding samples of EH36 steels with and without Zr addition has been systematically investigated. The inclusions in plain EH36 steel are almost composed of Al-Ca-S-O(-Mn) and undergo negligible changes during the whole process. With Zr addition, a large amount of individually fine MnS precipitates and Zr-containing inclusions are generated. In the rolled EH36-Zr sample, Zr-containing complex inclusions are effective to promote the nucleation of acicular ferrite on the surface, which are hardly found in the simulated welding sample of EH36-Zr steel due to the segregation of soluble Ti and Zr on the grain boundary.
引用
收藏
页码：164 / 172
页数：9
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