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强流脉冲电子束表面改性的物理模型及数值模拟 预览 被引量:18

Physical model and numerical simulation of intense pulsed electron beam surface modification
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摘要 推导出了强流脉冲电子束处理过程的应力场方程,利用数值模拟,得到了温度场和应力场的分布曲线,分别给出了熔化深度、升降温的速率及温度梯度的大小,准静态应力和热应力波的幅值、应力波的传播及反射过程,利用数值模拟结果对实验中观察到的实验现象熔化深度、材料表层及次表层数微米范围内组织结构的变化及数百微米的硬度提高等给出了解释. A one-dimension temperature and stress model is proposed based on the beam-target interaction process and thermal-elastic theory for the intense pulsed electron beam treatment. The temperature and stress profiles are derived by the numerical simulation. According to the simulation, the melted layer is about 2000 nm in depth, the rate of rapid heating and cooling reaches 108-109 K/s, the amplitude of quasi-static thermal stress is about several hundreds MPa, the vibratory frequency of thermal stress wave is about 106-108 Hz. The simulation explains satisfactorily the observed experimental phenomena as the surface melting depth and the depth distribution of microhardness.
作者 秦颖 吴爱民 邹建新 郝胜智 刘悦 王晓钢 董闯 Qin, Ying[1]; Wu, Ai-Min[1]; Zou, Jian-Xian[1]; Hao, Sheng-Zhi[1]; Liu, Yue[1]; Wang, Xiao-Gang[1]; Dong, Chuang[1]
机构地区 大连理工大学
出处 《强激光与粒子束》 EI CAS CSCD 北大核心 2003年第7期 701-704,共4页 High Power Laser and Particle Beams
关键词 强流脉冲电子束 表面改性 物理模型 数值模拟 应力场方程 温度场 熔化深度 热应力波 材料科学 Computer simulation Microhardness Surface treatment Temperature Thermal stress
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  • 1严宗达,王洪礼编著,.热应力[M],1993:428.
  • 2乐小云,赵渭江,颜莎,韩宝玺,向伟,强脉冲离子束辐照金属材料表面热力学效应计算[J].强激光与粒子束,2001,13(4):456-460. 被引量:12
  • 3刘振民,郝胜智,钛离子注入9Cr18钢的强流脉冲电子束后处理[J].核技术,2000,23(7):447-451. 被引量:13
  • 4吴爱民,陈景松,张爱民,邹建新,郝胜智,徐洮,董闯,模具钢电子束表面改性研究[J].核技术,2002,25(8):608-614. 被引量:21
  • 5Proskurovsky D I, Rotshtein V P, Ozur G E, et al. Pulsed electron-beam technology for surface modification of metallic materials[J]. J Vac Sci Technol A, 1998, 16 (4) : 2480--2488. 被引量:1
  • 6Pogrebnjak A D, Bratushka S, Boyko V I, et al. A review of mixing processes in Ta/Fe systems treated by high current electron beams[J].Nuclear Instruments and Methods in Physics Research B, 1998, 145: 373--390. 被引量:1
  • 7Pogrebnjak A D, Ladysev V S, Pogrebnjak N A, et al. A comparison of radiation damage and mechanical and tribological properties of α-Fe exposed to intense pulsed electron and ion beams[J]. Vacuum, 2000, 58: 45--52. 被引量:1
  • 8Proskurovsky D I, Rotshtein V P, Ozur G E, et al. Physical foundations for surface treatment of materials with low energy, high current electron beams[J]. Surface and Coatings Technology, 2000, 125: 49--56. 被引量:1
  • 9Hao S Z, Yao S, Guan J, et al. Surface treatment of aluminum by high current pulsed electron beam[J]. Current Applied Physics, 2001,1:203--208. 被引量:1
  • 10Dong C, Wu A M, Hao S Z, et al. Surface treatment by high current pulsed electron beam[J]. Surface and Coatings Technology, 2003,163--164,620--624. 被引量:1

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