Theoretical analysis for self-sharpening penetration of tungsten high-entropy alloy into steel target with elevated impact velocities

doi:10.1007/s10409-021-01086-y

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Theoretical analysis for self-sharpening penetration of tungsten high-entropy alloy into steel target with elevated impact velocities
	Chen, Haihua 3; Zhang, Xianfeng 3; Liu, Chuang 3; Xiong, Wei 3; Tan, Mengting 3; Dai LH(戴兰宏)1,2
刊名	ACTA MECHANICA SINICA
	2021-06-16
页码	13
关键词	Impact dynamics Long-rod projectile Tungsten high-entropy alloy (WHEA) Self-sharpening penetration Solid solution strengthening
ISSN号	0567-7718
DOI	10.1007/s10409-021-01086-y
通讯作者	Zhang, Xianfeng(lynx@njust.edu.cn)
英文摘要	The "self-sharpening" effect has been observed experimentally in the penetration of tungsten high-entropy alloy (WHEA) into steel targets in previous study. From the microscopic observation of the residual WHEA long-rod projectile (LRP), the multiphase structure at micro-scale of WHEA is the key effects on self-sharpening penetration process. In order to describe the distinctive penetration behavior, the interaction between micro phases is introduced to modify the hydrodynamic penetration model. The yield strengths of WHEA phases are determined based on the solid solution strengthening methods. Combined with the elbow-streamline model, the self-sharpening mechanism is revealed in view of the multi-phase flow dynamics and the flow field in the deformation area of the LRP nose is characterized to depict the shear layer evolution and the shape of the LRP's nose as well as the determination of the penetration channel. The self-sharpening coefficient considering the reduction of nose radius is proposed and introduced into the penetration model to calculate the depth of penetration and the penetration channel. Results show that the multi-phase interaction at the microscopic level contributes to the inhomogeneous distribution of the WHEA phases. The shear layer evolution separates part of the LRP material from the nose and makes the nose radius decrease more quickly. It is also the reason that WHEA LRPs have a pointed nose compared with the mushroom nose of WHA heavy alloy (WHA) LRPs. The calculated results agree well with the corresponding experimental data of WHA and WHEA LRPs penetrating into semi-infinite medium carbon steel targets with elevated impact velocities.
分类号	Q3
资助项目	National Natural Science Foundation of China[11790292] ; NSAF Joint Fund[U1730101]
WOS关键词	LONG RODS ; DYNAMIC DEFORMATION ; INTERFACE DEFEAT ; FEM ANALYSIS ; STRAIN-RATE ; BEHAVIOR ; PROJECTILES ; TRANSITION ; MODELS
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000662114900001
资助机构	National Natural Science Foundation of China ; NSAF Joint Fund
其他责任者	Zhang, Xianfeng
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86946]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Nanjing Univ Sci & Technol, Sch Mech Engn, Xiaolingwei 200, Nanjing 210094, Peoples R China;
推荐引用方式 GB/T 7714	Chen, Haihua,Zhang, Xianfeng,Liu, Chuang,et al. Theoretical analysis for self-sharpening penetration of tungsten high-entropy alloy into steel target with elevated impact velocities[J]. ACTA MECHANICA SINICA,2021:13.
APA	Chen, Haihua,Zhang, Xianfeng,Liu, Chuang,Xiong, Wei,Tan, Mengting,&戴兰宏.(2021).Theoretical analysis for self-sharpening penetration of tungsten high-entropy alloy into steel target with elevated impact velocities.ACTA MECHANICA SINICA,13.
MLA	Chen, Haihua,et al."Theoretical analysis for self-sharpening penetration of tungsten high-entropy alloy into steel target with elevated impact velocities".ACTA MECHANICA SINICA (2021):13.