魏德强,陈虎城,王荣

• 1:桂林电子科技大学教学实践部

摘要(Abstract)：

建立了移动电子束高斯热源作用下的三维相变硬化过程中温度场的数学模型,分析过程中考虑了热源分布、热物性参数、热辐射等因素对温度场的影响,得到了电子束扫描相变硬化温度场的分布规律和硬化层的形态,并进行了实验验证;探讨了电子束工艺参数对硬化区深度和宽度的影响。结果表明:移动电子束高斯热源作用下的温度分布等值线呈勺状,表面最高温度滞后于束流中心,且处理后硬化层横截面呈月牙状;在固态相变条件下,硬化层的宽度和深度随着扫描功率的增加呈非线性增加,随着扫描速度的增加呈非线性减小。

关键词(KeyWords)： 45钢;电子束;相变硬化;高斯分布;温度场

Abstract:

Keywords:

基金项目(Foundation): 广西自然科学基金(2010GXNSFA013028,2012GXNSFDA053026)

作者(Author): 魏德强,陈虎城,王荣

DOI: 10.13289/j.issn.1009-6264.2012.08.030

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