Enhanced chromizing kinetics of tool steel by means of surface mechanical attrition treatment

IMR OpenIR

	Enhanced chromizing kinetics of tool steel by means of surface mechanical attrition treatment
	S. D. Lu; Z. B. Wang; K. Lu
	2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:4-5 页码:995-1002
摘要	A nanostructured surface layer of about 20 mu m in thickness was fabricated on a hot-working tool steel (AISI H13) plate by means of surface mechanical attrition treatment (SMAT). Chromizing behaviors of the SMAT sample were investigated in comparison with its coarse-grained counterpart. Relative to the coarse-grained form, the Cr-diffusion depth was obviously enhanced by SMAT at various chromizing temperatures, with a maximum increment at 600 degrees C. A duplex chromizing treatment at 600 degrees C followed by at a higher temperature led to the formation of a much thicker chromized surface layer (up to 30 mu m in thickness) on the SMAT sample. This might be attributed to the formation of a large amount of nanosized chromium compounds in the surface layer at 600 degrees C, which retarded growth of nano-sized ferrite grains and improved the Cr diffusion at higher temperatures. Gradient distributions of Cr concentration, microstructure and hardness were formed in the chromized surface layer in the SMAT steel after the duplex chromizing treatment, leading to an obvious enhancement in the wear resistance. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[lu, s. d.; wang, z. b.; lu, k.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;wang, zb (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;zbwang@imr.ac.cn lu@imr.ac.cn
关键词	Nanostructured Materials Surface Mechanical Attrition Treatment Hot-working Tool Steel Duplex Chromizing Treatment Diffusion Low-carbon Steel Nanostructured Materials Duplex Treatment Wear-resistance H13 Steel Layer Diffusion Coatings Behavior Copper
URL	查看原文
WOS记录号	WOS:000273983900018
引用统计	被引频次：52[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31343
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. D. Lu,Z. B. Wang,K. Lu. Enhanced chromizing kinetics of tool steel by means of surface mechanical attrition treatment[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(4-5):995-1002.
APA	S. D. Lu,Z. B. Wang,&K. Lu.(2010).Enhanced chromizing kinetics of tool steel by means of surface mechanical attrition treatment.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(4-5),995-1002.
MLA	S. D. Lu,et al."Enhanced chromizing kinetics of tool steel by means of surface mechanical attrition treatment".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.4-5(2010):995-1002.