Rate-dependent nanoindentation creep behavior of a Fe-based amorphous coating

doi:10.1016/j.jnoncrysol.2022.121668

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	Rate-dependent nanoindentation creep behavior of a Fe-based amorphous coating
	Zhai, Haimin 2; Zhang, Yongang 2; He, Dongqing 2; Zhang, Xinjian 2; Cheng, Bo 2; Li, Wensheng 2; Li, Chunling 1; Li, Xiaosong 3; Cai, Anhui 3
刊名	Journal of Non-Crystalline Solids
	2022-08-15
卷号	590
关键词	Amorphous materials Coatings Creep Creep resistance Defects Nanoindentation Stress analysis Stress relaxation Anelastic and viscoplastic deformation, creep mechanism Anelastic deformation Creep mechanism Detonation spray Fe-based amorphous coatings Loading rate Nano indentation Nanoindentation creeps Rate dependent Viscoplastic deformation
ISSN号	0022-3093
DOI	10.1016/j.jnoncrysol.2022.121668
英文摘要	A very thick (∼1 mm) coating of Fe-based amorphous material was applied to a Q235 steel substrate by detonation spraying. The rate-dependent anelastic and viscoplastic deformations of the coating were investigated through nanoindentation creep experiments with loading rates of 0.1∼5 mN s−1; the results were analyzed using the Maxwell-Voigt model with two Kelvin units. Creep deformation in the Fe-based amorphous coating was found to be sensitive to loading rate; the nanohardness, creep-stress exponent, and viscosity lessened with increased loading rate during viscoplastic deformation. The presence of two characteristic peaks in the relaxation-time spectrum shows that the anelastic deformation was related to the activation of two types of defects. Low loading rates promoted the activation of defects in the soft region with long relaxation times; larger loading rates promoted the activation of defects in the hard region with shorter structural relaxation times, allowing plastic deformation. This resulted in lower creep resistance at higher loading rates. © 2022 Elsevier B.V.
语种	英语
出版者	Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158425]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院机电工程学院
作者单位	1.School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Hunan Provincial Key Laboratory of Electromagnetic Equipment Design and Manufacturing, Hunan Institute of Science and Technology, Yueyang; 414000, China
推荐引用方式 GB/T 7714	Zhai, Haimin,Zhang, Yongang,He, Dongqing,et al. Rate-dependent nanoindentation creep behavior of a Fe-based amorphous coating[J]. Journal of Non-Crystalline Solids,2022,590.
APA	Zhai, Haimin.,Zhang, Yongang.,He, Dongqing.,Zhang, Xinjian.,Cheng, Bo.,...&Cai, Anhui.(2022).Rate-dependent nanoindentation creep behavior of a Fe-based amorphous coating.Journal of Non-Crystalline Solids,590.
MLA	Zhai, Haimin,et al."Rate-dependent nanoindentation creep behavior of a Fe-based amorphous coating".Journal of Non-Crystalline Solids 590(2022).