Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion
The underlying physical mechanisms of metal materials associated with the effects of helium bubbles on surface damage under complex shock loading remain mysterious, primarily due to the challenges of observing dynamic evolution in situ and in real time. To address this issue, this study conducts mol...
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Elsevier
2025-06-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525004332 |
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| author | Qiang Bao Haonan Sui Bao Wu Xin-Xin Wang Qi Zhu Jian-Li Shao An-Min He Pei Wang |
| author_facet | Qiang Bao Haonan Sui Bao Wu Xin-Xin Wang Qi Zhu Jian-Li Shao An-Min He Pei Wang |
| author_sort | Qiang Bao |
| collection | DOAJ |
| description | The underlying physical mechanisms of metal materials associated with the effects of helium bubbles on surface damage under complex shock loading remain mysterious, primarily due to the challenges of observing dynamic evolution in situ and in real time. To address this issue, this study conducts molecular dynamics simulations of copper containing helium bubbles. The results clearly demonstrate that these bubbles lead to more devastating surface fragmentation and enhanced micro-jetting in copper under the double shock loading, and two primary mechanisms governing it in metals with defects are proposed to explain it. On the one hand, helium bubbles expanded due to the release of the first shock wave from the right surface, are collapsed under secondary shock wave, resulting in a local temperature increment and re-distribution. Consequently, the near-surface region of copper containing helium bubbles is more susceptible to melting, which diminishes the binding capacity of the copper matrix to the helium bubbles. On the other hand, the helium bubbles serve as energy storage container under shock loading; the energy absorbed from bubble compression during the shock is subsequently released, accelerating the movement of the microjet and causing severe surface damage through helium bubble expansion. |
| format | Article |
| id | doaj-art-6d9a965c8eb74ec3bb95bdc7ad8263ac |
| institution | OA Journals |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-6d9a965c8eb74ec3bb95bdc7ad8263ac2025-08-20T02:09:18ZengElsevierMaterials & Design0264-12752025-06-0125411401310.1016/j.matdes.2025.114013Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansionQiang Bao0Haonan Sui1Bao Wu2Xin-Xin Wang3Qi Zhu4Jian-Li Shao5An-Min He6Pei Wang7Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of ChinaLaboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of ChinaLaboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of ChinaLaboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of China; Corresponding author.Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of ChinaLaboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of ChinaLaboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of China; Center for Applied Physics and Technology, Peking University, Beijing 100871, People's Republic of China; Corresponding author at: Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of China.The underlying physical mechanisms of metal materials associated with the effects of helium bubbles on surface damage under complex shock loading remain mysterious, primarily due to the challenges of observing dynamic evolution in situ and in real time. To address this issue, this study conducts molecular dynamics simulations of copper containing helium bubbles. The results clearly demonstrate that these bubbles lead to more devastating surface fragmentation and enhanced micro-jetting in copper under the double shock loading, and two primary mechanisms governing it in metals with defects are proposed to explain it. On the one hand, helium bubbles expanded due to the release of the first shock wave from the right surface, are collapsed under secondary shock wave, resulting in a local temperature increment and re-distribution. Consequently, the near-surface region of copper containing helium bubbles is more susceptible to melting, which diminishes the binding capacity of the copper matrix to the helium bubbles. On the other hand, the helium bubbles serve as energy storage container under shock loading; the energy absorbed from bubble compression during the shock is subsequently released, accelerating the movement of the microjet and causing severe surface damage through helium bubble expansion.http://www.sciencedirect.com/science/article/pii/S0264127525004332Two successive shock loadingSurface fragmentationIrriadiated copperHelium bubbles |
| spellingShingle | Qiang Bao Haonan Sui Bao Wu Xin-Xin Wang Qi Zhu Jian-Li Shao An-Min He Pei Wang Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion Materials & Design Two successive shock loading Surface fragmentation Irriadiated copper Helium bubbles |
| title | Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion |
| title_full | Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion |
| title_fullStr | Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion |
| title_full_unstemmed | Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion |
| title_short | Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion |
| title_sort | near surface fragmentation in irradiated copper under two successive shock loading effects of local temperature re distribution and helium bubble expansion |
| topic | Two successive shock loading Surface fragmentation Irriadiated copper Helium bubbles |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525004332 |
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