Numerical Simulation on Pulsed Laser Ablation of the Single-Crystal Superalloy Considering Material Moving Front and Effect of Comprehensive Heat Dissipation
文献类型：期刊论文
| 作者 | Wang, Bin; Huang, Yihui; Jiao, Junke; Wang, Hao; Wang, Ji; Zhang, Wenwu; Sheng, Liyuan |
| 刊名 | MICROMACHINES
 |
| 出版日期 | 2021 |
| 卷号 | 12期号:2 |
| 英文摘要 | In the present research, an iterative numerical model is proposed to investigate the nanosecond pulsed laser ablation (PLA) mechanism of the DD6 single-crystal superalloy. In the numerical model, two subroutines are introduced to trace the moving boundary and update the thermal load. The iteration between the main governing equation and the two subroutines enables the PLA numerical simulation to consider material moving front and effect of comprehensive heat dissipation including thermal convection and radiation. The basic experimental results exhibit a good agreement with simulation results which indicates the good accuracy of the simulation model. Therefore, the PLA mechanism of the DD6 single-crystal superalloy is studied base on the improved iterative model, which indicates the evolution of temperature field, ablation zone morphology, formation of recast layer and heat-affected zone are closely related with time. The temperature of the laser spot center increases sharply at the first stage, reaching a maximum value of 5252 K, and then decreases gradually. The thermal dissipation postpones the ablation rate but promotes the formation of a recast layer and heat-affected zone. Due to the evaporation and thermal dissipation, the depth of the molten layer exhibits two rapid increasing stages. The comprehensive analysis of the PLA processing by the improved simulation model helps the understanding of the intrinsic mechanism, which would contribute to the further optimizing parameters of PLA fabrication of the DD6 single-crystal superalloy. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22226]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Sheng, LY (corresponding author), PKU HKUST ShenZhen HongKong Inst, Labortary Adv Mat & Proc, Shenzhen 518057, Peoples R China. 2.Huang, YH (corresponding author), Univ Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Inst Adv Mfg Technol, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, Bin,Huang, Yihui,Jiao, Junke,et al. Numerical Simulation on Pulsed Laser Ablation of the Single-Crystal Superalloy Considering Material Moving Front and Effect of Comprehensive Heat Dissipation[J]. MICROMACHINES,2021,12(2). |
| APA | Wang, Bin.,Huang, Yihui.,Jiao, Junke.,Wang, Hao.,Wang, Ji.,...&Sheng, Liyuan.(2021).Numerical Simulation on Pulsed Laser Ablation of the Single-Crystal Superalloy Considering Material Moving Front and Effect of Comprehensive Heat Dissipation.MICROMACHINES,12(2). |
| MLA | Wang, Bin,et al."Numerical Simulation on Pulsed Laser Ablation of the Single-Crystal Superalloy Considering Material Moving Front and Effect of Comprehensive Heat Dissipation".MICROMACHINES 12.2(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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