Enhanced thermal stability of the cellular structure through nano-scale oxide precipitation in 3D printed 316L stainless steel

doi:10.1016/j.fusengdes.2020.112213

	Enhanced thermal stability of the cellular structure through nano-scale oxide precipitation in 3D printed 316L stainless steel
	Zhang, Xu 1,2; Cao, Haibo 1; Yang, Xinyi 1; Zhao, Yanyun 1; Wang, Huijuan 2; Mao, Xiaodong 1; Zhai, Yutao 1
刊名	FUSION ENGINEERING AND DESIGN
	2021-03-01
卷号	164
关键词	Cellular structure Thermal stability Oxide dispersion strengthened Additively manufactured alloys
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2020.112213
通讯作者	Zhao, Yanyun(yanyun.zhao@inest.cas.cn) ; Zhai, Yutao(yutao.zhai@inest.cas.cn)
英文摘要	The cellular structure is one of the reasons for the improvement of 316 L performance which fabricated by additive manufacturing technology. However, the cellular structure tends to disappear at high temperatures. In this study, oxide nanoparticles were introduced into the 316 L matrix to improve the thermal stability of the cellular structure, this material was successfully fabricated by mechanical alloying followed with laser-powder-bed-fusion (LPBF). The thermal stability of the cellular structure in 316 L was tested with isothermal heat treatment at 1073 K, 1173 K and 1273 K, respectively. The microstructural stability of the cellular was characterized with scanning electron microscopy, transmission electron microscopy (TEM), electron backscatter diffraction, X-ray diffraction measurements and Vickers microhardness testing. The cellular structure was stable at 1073 K due to the dispersed precipitates pining the dislocations at its boundary. The chemical composition of the oxide precipitates with sizes in the range of 10-200 nm was examined by TEM combined with an energy dispersive spectrometry. This work provided a method to enhance the thermal stability of the microstructure of the additively manufactured stainless steel 316 L.
资助项目	National MCF (Magnetic Confinement Fusion) Energy R&D Program of China[2018YFE0306100] ; National Natural Science Foundation of China[51901223]
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000631004200001
资助机构	National MCF (Magnetic Confinement Fusion) Energy R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120807]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao, Yanyun; Zhai, Yutao
作者单位	1.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Hefei Inst Phys Sci, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xu,Cao, Haibo,Yang, Xinyi,et al. Enhanced thermal stability of the cellular structure through nano-scale oxide precipitation in 3D printed 316L stainless steel[J]. FUSION ENGINEERING AND DESIGN,2021,164.
APA	Zhang, Xu.,Cao, Haibo.,Yang, Xinyi.,Zhao, Yanyun.,Wang, Huijuan.,...&Zhai, Yutao.(2021).Enhanced thermal stability of the cellular structure through nano-scale oxide precipitation in 3D printed 316L stainless steel.FUSION ENGINEERING AND DESIGN,164.
MLA	Zhang, Xu,et al."Enhanced thermal stability of the cellular structure through nano-scale oxide precipitation in 3D printed 316L stainless steel".FUSION ENGINEERING AND DESIGN 164(2021).