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Shock and spall behaviors of a high specific strength steel: Effects of impact stress and microstructure
Wang W; Zhang HS(张虎生); Yang MX(杨沐鑫); Jiang P(姜萍); Yuan FP(袁福平); Wu XL(武晓雷); Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15,North 4th Ring,West Rd, Beijing 100190, Peoples R China.; Yuan, FP (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China.
Source PublicationJOURNAL OF APPLIED PHYSICS
2017-04-07
Volume121Issue:13
ISSN0021-8979
AbstractA series of plate-impact experiments were conducted to investigate the influences of impact stress and microstructure on the shock and spall behaviors of a high specific strength steel (HSSS). The HSSS shows a strong positive strain rate sensitivity on the yield strength. With increasing impact stress up to about 6 GPa the spall strength is found to decrease significantly and then levels off with further increasing impact stress. This trend is proposed to be attributed to the accumulation damage within the target as the initial shock-induced compression wave propagates through the target. The microcracks are clearly observed to nucleate from the interfaces between gamma-austenite and B2 phase and propagate along the interfaces or cut through the B2 phase in the HSSS during the spalling process. The Hugoniot elastic limit and the spall strength were found to be highly dependent on the microstructure. The spall strength was found to be higher when the density of the void nucleation sites is lower indicating that the spall strength should be a microstructure parameter of the HSSS under impact tensile conditions depending on the density of phase interfaces. It was also found that there is a tradeoff between the specific yield strength and the spall strength for this HSSS; thus the current findings should provide insights for achieving an optimal combination of both mechanical properties for impact-resistant applications by tailoring the microstructure. Published by AIP Publishing.
DOI10.1063/1.4979346
Indexed BySCI ; EI
Language英语
WOS IDWOS:000398636600041
WOS KeywordINDUCED PLASTICITY STEELS ; VOID GROWTH ; STRAIN-RATE ; DUCTILE FRACTURE ; ALLOY STEELS ; MODEL ; COMPRESSION ; DAMAGE ; SOLIDS ; DEFORMATION
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
Funding OrganizationNSFC(11672313 ; National Key Basic Research Program of China(2012CB932203 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040503) ; 11472286 ; 2012CB937500) ; 11572328)
DepartmentLNM实验平台 ; LNM材料介观力学性能的表征
Classification二类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60568
Collection非线性力学国家重点实验室
Corresponding AuthorYuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15,North 4th Ring,West Rd, Beijing 100190, Peoples R China.; Yuan, FP (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang W,Zhang HS,Yang MX,et al. Shock and spall behaviors of a high specific strength steel: Effects of impact stress and microstructure[J]. JOURNAL OF APPLIED PHYSICS,2017,121(13).
APA Wang W.,张虎生.,杨沐鑫.,姜萍.,袁福平.,...&Yuan, FP .(2017).Shock and spall behaviors of a high specific strength steel: Effects of impact stress and microstructure.JOURNAL OF APPLIED PHYSICS,121(13).
MLA Wang W,et al."Shock and spall behaviors of a high specific strength steel: Effects of impact stress and microstructure".JOURNAL OF APPLIED PHYSICS 121.13(2017).
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