Thermal-mechanical simulation of high-current pulsed electron beam surface modification process of pure aluminum

ZOU Jianxin QIN Ying WU Aimin HAO Shengzhi WANG Xiaogang DONG Chuang

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Thermal-mechanical simulation of high-current pulsed electron beam surface modification process of pure aluminum

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- Thermal-mechanical simulation of high-current pulsed electron beam surface modification process of pure aluminum
- NUCLEAR TECHNIQUES Issue 7, (2004)
- 作者机构：
  
  1. 大连理工大学三束材料改性国家重点实验室
  2. 大连理工大学三束材料改性国家重点实验室,大连,116023
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG174
- Published：01 July 2004
- 稿件说明：
移动端阅览
[1]邹建新,秦颖,吴爱民,郝胜智,王晓钢,董闯.强流脉冲电子束纯铝表面改性过程的热力学模拟[J].核技术,2004(07):519-524.

ZOU Jianxin QIN Ying WU Aimin HAO Shengzhi WANG Xiaogang DONG Chuang. Thermal-mechanical simulation of high-current pulsed electron beam surface modification process of pure aluminum[J]. Nuclear techniques, 2004, (7): 519-524.
[1]邹建新,秦颖,吴爱民,郝胜智,王晓钢,董闯.强流脉冲电子束纯铝表面改性过程的热力学模拟[J].核技术,2004(07):519-524. DOI：

ZOU Jianxin QIN Ying WU Aimin HAO Shengzhi WANG Xiaogang DONG Chuang. Thermal-mechanical simulation of high-current pulsed electron beam surface modification process of pure aluminum[J]. Nuclear techniques, 2004, (7): 519-524. DOI：

摘要

针对强流脉冲电子束表面改性的特点

建立了相应的数学物理模型

以纯铝材表面改性实验为基础

计算了由强流脉冲电子束辐照材料表面所产生快速升降温与熔凝过程

对其中的熔化、蒸发、热应力波等现象分别进行了数值模拟。计算结果表明

熔化深度约在1-10μm

与实验结果接近;蒸发作用影响较小

汽化层厚度仅为纳米量级;热应力波的幅值约在0.1 MPa量级

且与脉冲的能量密度大致成正比

但是对材料结构和性能有重要影响。

Abstract

A mathematical physics model is established to describe the surface modification process of High Current Pulsed Electron Beams (HCPEB) of pure aluminum alloy. Computer simulation is used to reveal the phenomena of fast heating and cooling

melting

solidification

evaporation

and thermal stress wave associated with the HCPEB bombardment. The calculated melting depth is about 1-10μm

which is close to the experimental results. The evaporated layer is at nanometer level

which can be omitted in the calculation of temperature field. The thermal stress wave

though as weak as about 0.1 MPa in peak amplitude (proportional to pulsed energy density)

has strong impacts on material’s structure and properties.

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Related Author

DENG Chang

ZHANG Lin

LIU Xiaojing

LIU Chuandong

XU Wei

HE Hui

LIU Xiaojing

YANG Xuan

Related Institution

School of Mechanical Engineering, Shanghai Jiao Tong University

Shanghai Digital Nuclear Reactor Technology Intergration Innovation Center

Nuclear Science and Engineering School, Shanghai Jiao Tong University

School of Energy and Power Engineering, Xi'an Jiao tong University

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China

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