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
ISSN1478-6435
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
DOI10.1080/14786435.2018.1468942
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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