Effect of La Content on Inclusion Morphology in Automobile Sulfur-Containing Gear Steel SCr420H

doi:10.1002/srin.202300127

IMR OpenIR

	Effect of La Content on Inclusion Morphology in Automobile Sulfur-Containing Gear Steel SCr420H
	Sun, Meng 1; Jiang, Zhouhua 1,2; Li, Yang 1; Chen, Changyong 1; Mao, Yunqie 1; Ma, Shuai 1; Wang, Yucheng 1; Liu, Hang 3
通讯作者	Jiang, Zhouhua(jiangzh@smm.neu.edu.cn) ; Li, Yang(liy@smm.neu.edu.cn)
	2023-07-09
发表期刊	STEEL RESEARCH INTERNATIONAL
ISSN	1611-3683
页码	14
摘要	The inclusion morphology of sulfur-containing gear steel with different La addition (0, 0.08, 0.5, and 1%) is investigated in laboratory experiments. The La and S concentrations in steel melt significantly decrease with the holding time after La addition increases, leading to different types of inclusions with specific shapes. Inclusion transformation routes with the holding time increased under different La addition are summarized as follows: 1) 0%La addition: cluster-like Al2O3 + cluster-like MnS & RARR; irregular block-like MgAl2O4 + cluster-like MnS; 2) 0.08%La addition: cluster-like LaAlO3 + spherical-like La-Al-O-S-(MnS) & RARR; spherical-like La-Al-O-S-(MnS) + spherical-like La-Al-O-S-(MgO)-(MnS) + cluster-like MnS; 3) 0.5%La addition: flower-like La-O + spherical-like La-O-S & RARR; spherical-like La-O-S; and 4) 1%La addition: flower-like La-O + spherical-like La-O-S & RARR; spherical-like La-O-S + cubic-like La-O-S-N-As. The results of hot compression suggest that La-containing inclusions are less prone to the shape change than MnS; moreover, microcracks are formed at the surface of La-containing inclusions. The nanoindentation test demonstrates that the hardness of La-O-S is higher than MnS. The high La addition has a remarkable effect on refractory degradation. For 0.5% and 1% La, dissolved La reacts with the MgAl2O4 phase in the MgO-MgAl2O4 dual-phase refractory and changes into LaAlO3.
关键词	inclusions La morphology reactions refractory
资助者	National Science Foundation of China
DOI	10.1002/srin.202300127
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[52074075]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001022138400001
出版者	WILEY-V C H VERLAG GMBH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178454
专题	中国科学院金属研究所
通讯作者	Jiang, Zhouhua; Li, Yang
作者单位	1.Northeastern Univ, Sch Met, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automation, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, Meng,Jiang, Zhouhua,Li, Yang,et al. Effect of La Content on Inclusion Morphology in Automobile Sulfur-Containing Gear Steel SCr420H[J]. STEEL RESEARCH INTERNATIONAL,2023:14.
APA	Sun, Meng.,Jiang, Zhouhua.,Li, Yang.,Chen, Changyong.,Mao, Yunqie.,...&Liu, Hang.(2023).Effect of La Content on Inclusion Morphology in Automobile Sulfur-Containing Gear Steel SCr420H.STEEL RESEARCH INTERNATIONAL,14.
MLA	Sun, Meng,et al."Effect of La Content on Inclusion Morphology in Automobile Sulfur-Containing Gear Steel SCr420H".STEEL RESEARCH INTERNATIONAL (2023):14.