Spalling fracture of Ni/Al nanolaminates influenced by chemical reaction

doi:10.1063/5.0056596

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	Spalling fracture of Ni/Al nanolaminates influenced by chemical reaction
	Tian, Xia 1; Xiang, Meizhen 2; Cui, Junzhi 3,4; Ji, Guangyu 5; Fu, Zhuojia 1
	2021-08-21
发表期刊	JOURNAL OF APPLIED PHYSICS
ISSN	0021-8979
卷号	130 期号:7 页码:7
摘要	We investigate spalling behaviors of Ni/Al nanolaminates by molecular dynamics simulations. First, we discuss spalling damage distributions in shocked Ni/Al nanolaminates. Voids nucleate in Al layers, while no voids are located in Ni layers or along the Ni/Al interfaces. This is because the spall strength of single-crystalline Ni is higher than that of single-crystalline Al. We reveal influences of a shock-induced chemical reaction on dynamic spalling damage and fracture processes. An abnormal "decrease -> increase -> decrease" zigzag variation tendency of the spall strength of Ni/Al nanolaminates as the impact velocity increase is observed in our simulations, which resulted from combining effects of micro-structures, chemical reactions, and temperature softening. When the impacting intensity is relatively low, the spall strength of Ni/Al nanolaminates decreases as the impact velocity increases due to micro-structure effects. However, when the loading velocity increases to a certain magnitude (2.5 km/s), the intimate contact of liquid Al with amorphous Ni near the interface makes the chemical reaction rate increase rapidly to form a large amount of Ni/Al alloys and enhances the spall strength. Published under an exclusive license by AIP Publishing.
DOI	10.1063/5.0056596
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NNSFC)[11972147] ; National Natural Science Foundation of China (NNSFC)[11772068] ; National Natural Science Foundation of China (NNSFC)[11932006] ; National Natural Science Foundation of China (NNSFC)[51739007]
WOS研究方向	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:000685806900001
出版者	AMER INST PHYSICS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/59108
专题	中国科学院数学与系统科学研究院
通讯作者	Xiang, Meizhen; Fu, Zhuojia
作者单位	1.Hohai Univ, Coll Mech & Mat, Nanjing 210098, Peoples R China 2.Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China 3.Chinese Acad Sci, Acad Math & Syst Sci, ICMSEC, LSEC, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China 5.Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Tian, Xia,Xiang, Meizhen,Cui, Junzhi,et al. Spalling fracture of Ni/Al nanolaminates influenced by chemical reaction[J]. JOURNAL OF APPLIED PHYSICS,2021,130(7):7.
APA	Tian, Xia,Xiang, Meizhen,Cui, Junzhi,Ji, Guangyu,&Fu, Zhuojia.(2021).Spalling fracture of Ni/Al nanolaminates influenced by chemical reaction.JOURNAL OF APPLIED PHYSICS,130(7),7.
MLA	Tian, Xia,et al."Spalling fracture of Ni/Al nanolaminates influenced by chemical reaction".JOURNAL OF APPLIED PHYSICS 130.7(2021):7.