| 焊接塑性应变演变过程——低碳钢、不锈钢及钛合金塑性应变演变特点及规律 |
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| 引用本文： | 王鹏,谢普,赵海燕,关桥.焊接塑性应变演变过程——低碳钢、不锈钢及钛合金塑性应变演变特点及规律[J].焊接学报,2013(12):63-66. |
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| 作者姓名： | 王鹏 谢普 赵海燕 关桥 |
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| 作者单位： | 清华大学机械工程系, 北京 100084,清华大学机械工程系, 北京 100084,清华大学机械工程系, 北京 100084,北京航空制造工程研究所, 北京 100024 |
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| 基金项目： | 国家自然科学基金资助项目(50935008,50505019,50975268);教育部新世纪优秀人才资助项目(NCET-07-0503);浙江省科技计划资助项目(2009C21019) |
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| 摘 要： | 采用数值模拟方法对低碳钢、不锈钢及钛合金3种材料薄板电弧焊接塑性应变演变过程进行了分析.结果表明,在焊接过程中,焊缝及近缝区内无论是纵向塑性应变还是横向塑性应变均为压缩塑性应变,熔池凝固及高温区冷却产生的拉伸卸载不足以完全抵消加热过程产生的压缩塑性应变,最终残留在焊缝及近缝区内的塑性应变仍保持压缩状态,压缩塑性区的宽度明显宽于材料"力学熔化"区宽度.
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| 关 键 词： | 低碳钢 不锈钢 钛合金 焊接塑性应变 有限元 |
| 收稿时间： | 2013/1/19 0:00:00 |
Fundamental research of welding plastic strain evolution process:Characteristics and law of evolution process of welding plastic strain in mild steel,stainless steel and titanium alloy thin plate |
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| WANG Peng,XIE Pu,ZHAO Haiyan and GUAN Qiao.Fundamental research of welding plastic strain evolution process:Characteristics and law of evolution process of welding plastic strain in mild steel,stainless steel and titanium alloy thin plate[J].Transactions of The China Welding Institution,2013(12):63-66. |
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| Authors: | WANG Peng XIE Pu ZHAO Haiyan and GUAN Qiao |
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| Affiliation: | Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China,Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China,Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China and Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China |
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| Abstract: | The evolution processes of arc welding plastic strain in mild steel,stainless steel and titanium alloy thin plate were analyzed by using numerical simulation method,respectively.Comparing with the measurement results,the calculation results demonstrate that both of longitudinal and transverse plastic strains in the weld and near weld zone during the welding process are compress plastic strain.The tensile unloading generated in the cooling stage cannot compensate the pre-existing compress plastic strain,which makes the residual plastic strain in the weld and near weld zone remain in compressive state.The width of compress plastic strain area is obviously wider than that of"materials'' mechanics melting zone".Welding speed has a significant effect on residual plastic strain and stress in titanium alloy plate. |
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| Keywords: | mild steel stainless steel titanium alloy welded plastic strain finite element analysis |
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