The void nucleation mechanism within lead phase during spallation of leaded brass

doi:10.1080/14786435.2018.1468942

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	The void nucleation mechanism within lead phase during spallation of leaded brass
	Yang, Y ; Wang, C ; Chen, XZ ; Chen, KG ; Hu, HB ; Fu, YA
	2018
发表期刊	PHILOSOPHICAL MAGAZINE
ISSN	1478-6435
卷号	98 期号:21 页码:1975-1990
文章类型	期刊论文
摘要	The incipient spall behaviours of Cu-34%Zn-3%Pb leaded brass samples with annealed and cryogenic-treated conditions were loaded using one-stage light gas gun experiments. The effect of Pb-phase on dynamic damage nucleation in leaded brass specimens was investigated by means of optical microscopy, scanning electron microscopy and x-ray computer tomography. It was found that the voids of incipient spall were mainly nucleated in the interior of the lead (no tensile stress would be produced within lead according to the impact theory) instead of nucleated at the phase interface as expected by quasi-static damage fracture theory. A nucleation model is proposed in the present work that is the asymmetry high compression zones in the centre of the lead-phase were formed by the rarefaction wave convergence effects of matrix/quasi-spherical lead interface, which caused adiabatic temperature rise that exceeded melting point of lead due to severe plastic deformation, finally led to local melting and void nucleation. In addition, the spall strength and damage rate increased with the increase in the Pb-phase number.
关键词	High-purity Copper Sweeping Detonation Polycrystalline Copper Ductile Fracture Damage Failure Metals Strength Behavior
DOI	10.1080/14786435.2018.1468942
收录类别	SCI
语种	英语
WOS记录号	WOS:000435124800005
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/29184
专题	中科院上海应用物理研究所2011-2018年
作者单位	1.Yang, Y 2.Wang, C 3.Chen, XZ 4.Chen, KG 5.Hu, HB 6.Fu, YA
推荐引用方式 GB/T 7714	Yang, Y,Wang, C,Chen, XZ,et al. The void nucleation mechanism within lead phase during spallation of leaded brass[J]. PHILOSOPHICAL MAGAZINE,2018,98(21):1975-1990.
APA	Yang, Y,Wang, C,Chen, XZ,Chen, KG,Hu, HB,&Fu, YA.(2018).The void nucleation mechanism within lead phase during spallation of leaded brass.PHILOSOPHICAL MAGAZINE,98(21),1975-1990.
MLA	Yang, Y,et al."The void nucleation mechanism within lead phase during spallation of leaded brass".PHILOSOPHICAL MAGAZINE 98.21(2018):1975-1990.

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