| 不同焊接电流电压下超级钢热影响区晶粒尺寸的数值模拟 |
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| 引用本文： | 张满.不同焊接电流电压下超级钢热影响区晶粒尺寸的数值模拟[J].电焊机,2008,38(12). |
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| 作者姓名： | 张满 |
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| 作者单位： | 淮阴工学院,江苏,淮安,223001 |
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| 基金项目： | 江苏淮阴工学院青年教师科研基金
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| 摘 要： | .利用工程模拟软件模拟超级钢焊接温度场,在温度场模拟过程中对工件进行三维有限元网格划分,焊缝及热影响区等重要部位网格划分细密,离焊缝较远位置网格可适当稀疏.热源模型采用双椭球分布模式,利用计算机语言编制热源程序.从模拟温度场中提取热熔合线和焊接热循环曲线等信息,并实验加以验证,实验结果与模拟结果基本吻合.在热影响区温度场基础上,结合晶粒长大动力学原理计算热影响区晶粒尺寸,并实验加以验证,实验结果与计算结果基本吻合.利用此方法计算不同焊接电流、电压下热影响区晶粒尺寸,绘制晶粒尺寸图,定量预测了晶粒尺寸随电流、电压增加而增大的趋势.
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| 关 键 词： | 超级钢 热影响区 晶粒尺寸 |
Crystalline grain size simulation for HAZ of ultra fine grain steel under different welding electric current and voltage |
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| ZHANG Man.Crystalline grain size simulation for HAZ of ultra fine grain steel under different welding electric current and voltage[J].Electric Welding Machine,2008,38(12). |
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| Authors: | ZHANG Man |
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| Affiliation: | ZHANG Man(Huaiyin Institute of Technology,Huaian 223001,China) |
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| Abstract: | The welding temperature field of ultra fine grain steel was simulated by the simulation software.With the welding temperature field simulation,it was very important to divide the lattice reasonably.Fine lattice was applied in the welding seam and heat affected zone,and course lattice was applied in the zone far from the welding seam.It was crucial to choose the heat distribution function rationally.The heat distribution function was programmed by the computer language.From the welding temperature field simu... |
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| Keywords: | ultra fine grain steel heat affected zone crystalline grain size |
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