EFFECT OF RARE-EARTH AND CALCIUM TREATMENTS ON THE MECHANICAL, PHYSICAL, AND ELECTROCHEMICAL PROPERTIES OF A 16MN STEEL

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	EFFECT OF RARE-EARTH AND CALCIUM TREATMENTS ON THE MECHANICAL, PHYSICAL, AND ELECTROCHEMICAL PROPERTIES OF A 16MN STEEL
	L. Q. Shi; J. Z. Chen; D. O. Northwood
	1992
发表期刊	Journal of Materials Engineering and Performance
ISSN	1059-9495
卷号	1 期号:1 页码:21-27
摘要	Two treatment methods, namely Ca-Si injection into the ladle and rare earth (RE) additions to the mold, were investigated for their effectiveness in controlling the microstructure, particularly sulfide inclusions, and hence the properties of a 16Mn plain-carbon steel. A combined Ca + RE treatment increased the critical crack opening displacement in the transverse direction of sheet material to that in the rolling direction. The combined treatment also improved the resistance to stress-corrosion cracking (SCC) in a boiling 20 wt.% NH4NO3 solution. Too large a RE addition, ultimately lowers SCC resistance. The RE additions retarded austenite grain growth, whereas the Ca-only addition accelerated grain growth. The changes in fracture behavior, SCC resistance, and austenite grain growth behavior are explained in terms of the segregation of the RE to the grain boundaries and the subsequent changes in the electrochemical and mechanical properties of the grain boundaries relative to the grain interiors. A combined treatment of injecting 3.4 kg Ca-Si per ton of steel into the molten steel and adding 0.03 wt.% RE to the mold yielded optimum properties.
部门归属	acad sinica,inst met res,shenyang,peoples r china.;shi, lq (reprint author), univ windsor,engn mat grp,windsor n9b 3p4,ontario,canada
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/39288
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Q. Shi,J. Z. Chen,D. O. Northwood. EFFECT OF RARE-EARTH AND CALCIUM TREATMENTS ON THE MECHANICAL, PHYSICAL, AND ELECTROCHEMICAL PROPERTIES OF A 16MN STEEL[J]. Journal of Materials Engineering and Performance,1992,1(1):21-27.
APA	L. Q. Shi,J. Z. Chen,&D. O. Northwood.(1992).EFFECT OF RARE-EARTH AND CALCIUM TREATMENTS ON THE MECHANICAL, PHYSICAL, AND ELECTROCHEMICAL PROPERTIES OF A 16MN STEEL.Journal of Materials Engineering and Performance,1(1),21-27.
MLA	L. Q. Shi,et al."EFFECT OF RARE-EARTH AND CALCIUM TREATMENTS ON THE MECHANICAL, PHYSICAL, AND ELECTROCHEMICAL PROPERTIES OF A 16MN STEEL".Journal of Materials Engineering and Performance 1.1(1992):21-27.