Hardening of high-energy self-ion irradiated FeCrAl ODS alloys evaluated by micro- and nano-hardness tests

doi:10.1016/j.ijpvp.2021.104522

	Hardening of high-energy self-ion irradiated FeCrAl ODS alloys evaluated by micro- and nano-hardness tests
	Han, Xuxiao 1,2,3; Zhang, Chonghong 1,2; Yang, Yitao 1,2; Niu, Mengke 1,2; Wang, Tieshan 3; Kimura, Akihiko 4
刊名	INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
	2021-12-01
卷号	194 页码:7
关键词	FeCrAl ODS alloys Irradiation hardening Nano-hardness Micro-hardness Nix-Gao model Modified Nix-Gao model
ISSN号	0308-0161
DOI	10.1016/j.ijpvp.2021.104522
通讯作者	Zhang, Chonghong(c.h.zhang@impcas.ac.cn)
英文摘要	Hardening of two kinds of FeCrAl ODS alloys irradiated by high-energy heavy ions to about 0.8 dpa at nominal 200 degrees C is investigated. A damage layer of 24 mu m in thickness produced by the ion irradiation in the specimens makes possible both the micro- and the nano-hardness tests. Nix-Gao model is used to eliminate the indentation size effect (ISE) from the hardness data of the damage plateau so as to obtain the equivalent bulk hardness values. Results of the hardness tests show that the FeCrAl ODS alloy with 0.8 wt% Hf addition exhibits better resistance to irradiation hardening than that with 0.6 wt% Zr addition. A correlation between the micro- and the nanohardness data is established as HV0 = 74.5H(0) (HV0 in unit of kgf/mm(2), H-0 in unit of GPa) for the ODS alloys. A modified Nix-Gao model which includes a maximum allowable density of the geometrically necessary dislocation (GND) and a non-uniform distribution of GNDs can fit well the nano-hardness data in the entire indentation depth range, including the near surface region with a damage ramp.
资助项目	National Key Research and Development Program of China[2017YFB0702202] ; National Natural Science Foundation of China[U1532262]
WOS关键词	FERRITIC STEELS ; BILINEAR BEHAVIOR ; YIELD-STRESS ; INDENTATION ; MICROINDENTATION ; NANOINDENTATION ; DAMAGE ; SCALE ; F82H
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000705529000030
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/136165]
专题	中国科学院近代物理研究所
通讯作者	Zhang, Chonghong
作者单位	1.Chinese Acad Sci, Inst Modern Phys, 509 Nanchang Rd, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 3.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 4.Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan
推荐引用方式 GB/T 7714	Han, Xuxiao,Zhang, Chonghong,Yang, Yitao,et al. Hardening of high-energy self-ion irradiated FeCrAl ODS alloys evaluated by micro- and nano-hardness tests[J]. INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING,2021,194:7.
APA	Han, Xuxiao,Zhang, Chonghong,Yang, Yitao,Niu, Mengke,Wang, Tieshan,&Kimura, Akihiko.(2021).Hardening of high-energy self-ion irradiated FeCrAl ODS alloys evaluated by micro- and nano-hardness tests.INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING,194,7.
MLA	Han, Xuxiao,et al."Hardening of high-energy self-ion irradiated FeCrAl ODS alloys evaluated by micro- and nano-hardness tests".INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING 194(2021):7.