| 引用本文: | 汪舟,姜传海,Volker Schulze,陈艳华,嵇宁.不同光束移动速度下的激光淬火有限元分析[J].材料科学与工艺,2011,19(4):95-102.DOI:10.11951/j.issn.1005-0299.20110420. |
| WANG Zhou,JIANG Chuan-hai,Volker Schulze,CHEN Yan-hua,JI Ning.FEM analysis of laser hardening with different laser moving velocities[J].Materials Science and Technology,2011,19(4):95-102.DOI:10.11951/j.issn.1005-0299.20110420. |
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| 不同光束移动速度下的激光淬火有限元分析 |
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汪舟1,2, 姜传海1, Volker Schulze2, 陈艳华1, 嵇宁3
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1.上海交通大学材料科学与工程学院;2.Institut für Werkstoffkunde I,Karlsruhe Institute of Technology,Karlsruhe 76128;3.LEMHE/ICMMO,UMR 8182,Université Paris-Sud 11,Orsay 91405
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| 摘要: |
| 为研究不同激光淬火处理条件下激光淬火温度场和物相结构,运用ABAQUS/Standard对激光淬火处理AISI4140钢进行了有限元模拟,并结合实验进行了验证.结果表明:激光淬火材料最高温度并不在光束中心,而是出现在距激光束中心2 mm的位置,且不随着光束移动速度的增大而改变位置;在激光束最高温度恒定为1150℃情况下,不同移动速度对于升温速率影响更加显著,而降温速率则相对稳定;材料本身性质和热边界条件是影响降温速率的主要因素,激光束移动速度为次要因素.另外,可以通过此模型制定合理激光处理工艺得到相应深度马氏体硬化层. |
| 关键词: AISI4140钢 激光淬火 温度场 马氏体层深 有限元模拟 |
| DOI：10.11951/j.issn.1005-0299.20110420 |
| 分类号:TG156.3 |
| 基金项目:白玉兰科技人才基金资助项目(2007B071);国家建设高水平大学公派研究生项目(2008) |
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| FEM analysis of laser hardening with different laser moving velocities |
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WANG Zhou1,2, JIANG Chuan-hai1, Volker Schulze2, CHEN Yan-hua1, JI Ning3
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1.School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;2.Institut für Werkstoffkunde I,Karlsruhe Institute of Technology,Karlsruhe 76128,Germany;3.LEMHE/ICMMO,UMR 8182,UniversitéParis-Sud 11,Orsay 91405,France
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| Abstract: |
| To investigate the temperature field and phase distribution in laser hardening with different laser moving velocities,the simulation of laser hardening process for AISI 4140 was carried out using finite element analysis software ABAQUS/Standard and the simulated results were verified by corresponding experimental results.The results showed that the maximum temperature position on laser hardening treated surface did not appear at the center of laser beam but 2 mm behind the center and the maximum temperature position did not change with the increasing of laser moving velocity.The change of laser moving velocity influenced heating rate more significant than cooling rate and the cooling rate was relative stable when laser moving velocity change.The main affecting factor on cooling rate was the property of material and the thermal boundary condition,the secondary factor was laser moving velocity.Additionally,using this model could establish reasonable parameters to obtain any depth of martensitic hardened layer. |
| Key words: AISI4140 laser hardening temperature field depth of matensitic layer finite element simulation |
