Microstructure and nanoindentation hardness of shot-peened ultrafine-grained low-alloy steel

IMR OpenIR

	Microstructure and nanoindentation hardness of shot-peened ultrafine-grained low-alloy steel
其他题名	Microstructure and nanoindentation hardness of shot-peened ultrafine-grained low-alloy steel
	Feng Xiaowei 1; Xie Juan 2; Xue Wenying 3; Shen Yongfeng 2; Wang Hongbo 1; Liu Zhenyu 3
	2019
发表期刊	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN	1006-706X
卷号	26 期号:5 页码:472-482
摘要	The effect of shot peening (SP) on microstructure and hardness of ultrafine-grained (UFG) low-alloy steel was investigated. With increasing shot-peening time from 0.5 to 1.5 h, grain size of UFG low-alloy steel decreases from 400 to 280 nm at surface whilst that of the layer with a depth of 160 m decreases from (230 +/- 15) to (75 +/- 5) nm. Interestingly, nanoindentation shows that hardness increases linearly with increasing the SP duration, reaching a value as high as (7.10 +/- 0.1) GPa at the depth of 160 mu m after the SP duration of 1.5 h. The thickness of the SP treated layer is measured as similar to 300 mu m. The Hall-Petch (H-P) relationship was established for the hardening layer. Correspondingly, abrasion resistance should be similar to 51% higher than that of as-prepared UFG low-alloy steel. As shown in SP processing, grain refinement is the key factor responsible for the strengthening of the studied steel.
其他摘要	The effect of shot peening (SP) on microstructure and hardness of ultrafine-grained (UFG) low-alloy steel was investigated. With increasing shot-peening time from 0.5 to 1.5 h, grain size of UFG low-alloy steel decreases from 400 to 280 nm at surface whilst that of the layer with a depth of 160 lm decreases from (230 ± 15) to (75 ± 5) nm. Interestingly, nanoindentation shows that hardness increases linearly with increasing the SP duration, reaching a value as high as (7.10 ± 0.1) GPa at the depth of 160 lm after the SP duration of 1.5 h. The thickness of the SP treated layer is measured as ~300 lm. The Hall–Petch (H–P) relationship was established for the hardening layer. Correspondingly, abrasion resistance should be ~ 51 %higher than that of as-prepared UFG low-alloy steel. As shown in SP processing, grain refinement is the key factor responsible for the strengthening of the studied steel.
关键词	MECHANICAL-PROPERTIES CORROSION BEHAVIOR SURFACE FATIGUE MORPHOLOGY FILMS Low-alloy steel Shot peening Grain refinement Nanoindentation Hardness
收录类别	CSCD
语种	英语
资助项目	[NSAF] ; [National Natural Science Foundation of China (NSFC)] ; [Science and Technology Research Project of Education Department of Liaoning Province]
CSCD记录号	CSCD:6522115
引用统计	被引频次：6[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/142554
专题	中国科学院金属研究所
作者单位	1.中国科学院 2.中国科学院金属研究所 3.东北大学
推荐引用方式 GB/T 7714	Feng Xiaowei,Xie Juan,Xue Wenying,et al. Microstructure and nanoindentation hardness of shot-peened ultrafine-grained low-alloy steel[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2019,26(5):472-482.
APA	Feng Xiaowei,Xie Juan,Xue Wenying,Shen Yongfeng,Wang Hongbo,&Liu Zhenyu.(2019).Microstructure and nanoindentation hardness of shot-peened ultrafine-grained low-alloy steel.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,26(5),472-482.
MLA	Feng Xiaowei,et al."Microstructure and nanoindentation hardness of shot-peened ultrafine-grained low-alloy steel".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 26.5(2019):472-482.