Effects of Rare Earth on the Microstructure and Impact Toughness of H13 Steel

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	Effects of Rare Earth on the Microstructure and Impact Toughness of H13 Steel
	J. Z.; Fu Gao, P. X.; Liu, H. W.; Li, D. Z.
	2015
发表期刊	Metals
ISSN	2075-4701
卷号	5 期号:1 页码:383-394
摘要	Studies of H13 steel suggest that under appropriate conditions, additions of rare-earth metals (REM) can significantly enhance mechanical properties, such as impact toughness. This improvement is apparently due to the formation of finer and more dispersive RE inclusions and grain refinement after REM additions. In this present work, the microstructure evolution and mechanical properties of H13 steel with rare earth additions (0, 0.015, 0.025 and 0.1 wt.%) were investigated. The grain size, inclusions and fracture morphology were systematically studied by means of optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicate that REM addition of 0.015 wt.% can result in good improvement of performance compared to the REM additions of 0.025 wt.% and 0.1 wt.%. It is found that the impact toughness is significantly enhanced with the addition of 0.015% REM, which can be improved 90% from 10 J to 19 J. Such an addition of REM can result in a huge volume fraction of finer and more dispersive inclusions which are extremely good to toughness.
部门归属	[gao, jinzhu ; fu, paixian ; liu, hongwei ; li, dianzhong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; fu, px (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; jzgao11b@imr.ac.cn ; pxfu@imr.ac.cn ; hwliu@imr.ac.cn ; dzli@imr.ac.cn
关键词	D2 Tool Steel Mechanical-properties Thermal Fatigue Behavior Additions Resistance Aisi-h13 Cerium Iron Nucleation
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73801
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Z.,Fu Gao, P. X.,Liu, H. W.,et al. Effects of Rare Earth on the Microstructure and Impact Toughness of H13 Steel[J]. Metals,2015,5(1):383-394.
APA	J. Z.,Fu Gao, P. X.,Liu, H. W.,&Li, D. Z..(2015).Effects of Rare Earth on the Microstructure and Impact Toughness of H13 Steel.Metals,5(1),383-394.
MLA	J. Z.,et al."Effects of Rare Earth on the Microstructure and Impact Toughness of H13 Steel".Metals 5.1(2015):383-394.