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Numerical simulation of the effects of the impact velocity on the particle deposition characteristics in cold gas dynamic spraying 被引量：1

Numerical simulation of the effects of the impact velocity on the particle deposition characteristics in cold gas dynamic spraying
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摘要 In this study, the effects of the impact velocity on the particle deposition characteristics in cold gas dynamic spraying （CGDS） of 304 stainless steel （SS） on an interstitial free （IF） steel substrate are numerical simulated by means of a finite element analysis （FEA）. The results have illustrated that when the particle impact velocity exceeds a critical value at which adiabatic shear instability of the particle starts to occur. Meanwhile, the fatten ratio and impact crater depth （or the effective contacting area ） increase rapidly. The particle-substrate bonding and deposition mechanism can be attributed to such an adiabatic shear deformation induced by both the compressive force and the slide friction force of particle. The critical velocity can be predicted by numerical simulation, which is useful to optimize the CGDS processing parameters for various materials. In this study, the effects of the impact velocity on the particle deposition characteristics in cold gas dynamic spraying （CGDS） of 304 stainless steel （SS） on an interstitial free （IF） steel substrate are numerical simulated by means of a finite element analysis （FEA）. The results have illustrated that when the particle impact velocity exceeds a critical value at which adiabatic shear instability of the particle starts to occur. Meanwhile, the fatten ratio and impact crater depth （or the effective contacting area ） increase rapidly. The particle-substrate bonding and deposition mechanism can be attributed to such an adiabatic shear deformation induced by both the compressive force and the slide friction force of particle. The critical velocity can be predicted by numerical simulation, which is useful to optimize the CGDS processing parameters for various materials.
作者 MENG Xianming ZHANG Junbao HAN Wei LIANG Yongli YANG Xiaoping ZHAO Jie
机构地区 School of Materials Science and Engineering Advanced Technology Division
出处 《Baosteel Technical Research》 CAS 2011年第1期12-16,共5页 宝钢技术研究（英文版）
关键词 numerical simulation cold gas dynamic spraying（CGDS） DEFORMATION particle impact velocity numerical simulation cold gas dynamic spraying（CGDS） deformation particle impact velocity
分类号 TG174.442 [金属学及工艺—金属表面处理] TD235.222 [矿业工程—矿井建设]
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参考文献16

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同被引文献13

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  • 5Duong Hung, Yusuke Nakano, Fumihiko Tana- ka,et al. Preserving the strength of corrugated cardboard under high humidity condition using nano-sized mists [ J ]. Composites Science and Technology,2010,70(14) :2123 - 2127.
  • 6Hung D V, Tong S, Nakano Y, et al. Measure- ments of particle size distributions produced by humidifiers operating in high humidity storage environments [J]. Bio-systems Engineering, 2010,107(1) :54-60.
  • 7Isidro Diego, Susana Torno, Javier Torano, et al. A practical use of CFD for ventilation of underground work [J].Tunneling and Under- ground Space Technology, 2011, 26 (1): 189 - 200.
  • 8Hideki Yamada, Gyuyoug Yoon, Masaya Oku- miya, et al. Study of cooling system with water mist sprayers : Fundamental examination of par- ticle size distribution and cooling effects [J]. Building Simulation ,2008,1 ( 3 ) :214 - 222.
  • 9袁江涛,杨立,孙嵘,陈翾,张健.高温气流内雾滴运动与蒸发特性的理论分析[J].海军工程大学学报,2008,20(2):5-8. 被引量：13
  • 10向立平,王汉青.高温高湿矿井人体热舒适数值模拟研究[J].矿业工程研究,2009,24(3):66-69. 被引量：13

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Baosteel Technical Research
2011年 第1期

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