| LY12CZ铝合金焊件在热循环作用下的尺寸不稳定性 |
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| 引用本文： | 刘雪松,徐文立,方洪渊,田锡唐.LY12CZ铝合金焊件在热循环作用下的尺寸不稳定性[J].焊接学报,2004,25(3):82-84. |
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| 作者姓名： | 刘雪松 徐文立 方洪渊 田锡唐 |
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| 作者单位： | 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 摘 要： | 采用三坐标测量机作为测量方法试验研究了LY12CZ铝合金焊接件在经受热循环作用下的尺寸不稳定变形规律，并对产生这种变形的机理进行力学和微观组织分析。结果表明，LY12CZ铝合金焊接件经受9次热循环后，尺寸趋于稳定。焊件发生尺寸不稳定变形的原因与温度条件、微观组织的变化，焊接残余应力的松弛密切相关。
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| 关 键 词： | LY12CZ铝合金 热循环 尺寸不稳定性 |
| 文章编号： | 0253-360X(2004)03-82-03 |
| 收稿时间： | 2004/3/5 0:00:00 |
field;finite element analysisDimensional instability of LY12CZ welded specimens under condition of thermal cycles |
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| LIU Xue-song,XU Wen-li,FANG Hong-yuan and TIAN Xi-tang.field;finite element analysisDimensional instability of LY12CZ welded specimens under condition of thermal cycles[J].Transactions of The China Welding Institution,2004,25(3):82-84. |
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| Authors: | LIU Xue-song XU Wen-li FANG Hong-yuan and TIAN Xi-tang |
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| Affiliation: | National Key laboratory of Advanced Welding Production and Technology, Harbin Institute of Technology, Harbin 150001, China,National Key laboratory of Advanced Welding Production and Technology, Harbin Institute of Technology, Harbin 150001, China,National Key laboratory of Advanced Welding Production and Technology, Harbin Institute of Technology, Harbin 150001, China and National Key laboratory of Advanced Welding Production and Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | With the Three-Coordinate Measuring Machine, the di-mensional instability of LY12CZ welded specimens under the condition ofthermal cycles was investigated experimentally. The deformation mecha-nism was analyzed from the viewpoint of mechanics and microstructures.Experimental results show that the dimensions of LY12CE welded speci-mens will tend to stable after mine thermal cycles, and the reasons for in-stable deformation of welded specimens are tightly related with tempera-ture, change of mierostructures and relief of residual welding stress. |
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| Keywords: | LY12CZ aluminum alloy thermal cycles dimensionalinstability |
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