Room temperature nanoindentation creep behavior of detonation sprayed Fe-based amorphous coating

doi:10.1016/j.intermet.2021.107426

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Room temperature nanoindentation creep behavior of detonation sprayed Fe-based amorphous coating
	Zhai, Haimin 1; Ma, Xu 1; Cheng, Bo 1; He, Dongqing 1; Zhang, Xinjian 1; Li, Wensheng 1; Li, Chunling 2; Li, Xiaosong 3; Cai, Anhui 3
刊名	INTERMETALLICS
	2022-02-01
卷号	141
关键词	Fe-based amorphous coating Detonation spary Nanoindentation creep Stress exponent Shear transition zone volume
ISSN号	0966-9795
DOI	10.1016/j.intermet.2021.107426
英文摘要	The Fe-based amorphous amorphous coating with a thickness of 150 mu m was prepared by detonation spraying. Under a constant strain rate (0.01 s-1 and 0.50 s-1) and a holding time of 50 s, the Fe-based amorphous coatings were subjected to room temperature nanoindentation creep tests with the penetration depth varying from 50 nm to 500 nm, then the depth-dependent creep deformation mechanism of Fe-based amorphous coating during nanoindentation tests were investigated in detail. The results show that the creep responses of coating obviously depend on the indentation penetration depth (hp) and the indentation load rate, i.e., the creep displacement of coating increases with the increase of hp and loading strain rate. This is mainly due to the rapid increase in the shear transition zone volume of the coating as the hp increases, making it easier for the shear band to be excited to nucleate, and results in an obvious creep deformation. Moreover, at high strain rates, the initiation rate of the free volume in the amorphous coating far exceeds its annihilation rate, resulting in a large amount of excess free volume in the amorphous coating, which makes it easier to excite multiple shear bands in the amorphous coating and cause creep plastic deformation.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000728570300001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154816]
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.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Peoples R China; 3.Hunan Inst Sci & Technol, Hunan Prov Key Lab Electromagnet Equipment Design, Yueyang 414000, Peoples R China
推荐引用方式 GB/T 7714	Zhai, Haimin,Ma, Xu,Cheng, Bo,et al. Room temperature nanoindentation creep behavior of detonation sprayed Fe-based amorphous coating[J]. INTERMETALLICS,2022,141.
APA	Zhai, Haimin.,Ma, Xu.,Cheng, Bo.,He, Dongqing.,Zhang, Xinjian.,...&Cai, Anhui.(2022).Room temperature nanoindentation creep behavior of detonation sprayed Fe-based amorphous coating.INTERMETALLICS,141.
MLA	Zhai, Haimin,et al."Room temperature nanoindentation creep behavior of detonation sprayed Fe-based amorphous coating".INTERMETALLICS 141(2022).