| Effect of Si,Mn and Al on the Microstructure and Mechanical Properties of ADI Weld Metal |
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| 引用本文： | DaqianSUN LianLIU 等. Effect of Si,Mn and Al on the Microstructure and Mechanical Properties of ADI Weld Metal[J]. 材料科学技术学报, 2002, 18(3): 271-274 |
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| 作者姓名： | DaqianSUN LianLIU 等 |
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| 作者单位： | [1]SchoolofMaterialsScienceandEngineering,JilinUniversity,Changchun130025,China [2]DalianUnieristyofTechnology,Dalian116012,CHina |
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| 摘 要： | The effects of Si,Mn and Al on the microstructure and mechanical properties of ADl weld have been studied.The microstructure of ADl weld metal mainly consists of bainitic ferrite and retained austenite.Mechanical properties of Adl weld increase with increasing Si content,but an excess of Si(3.79%) results in decreasing the austemperability owing to decreasing the carbon content of the matrix austenite.Mn increases the retained austenite volume fractio,but the ductility and impact toughness of weld obviously decrease with increasing Mn content because of increased amount of martenite and twin martenite.In the range of 0.13%-0.64%Al ,increasing Al content favours improving the mechanical properties of ADl weld.Therefore,it is very important to select suitable Si,Mn and Al contents to improve mechanical properties of ADl weld .
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| 关 键 词： | ADI焊接金属 显微组织 铝 锰 硅 球墨铸铁 奥氏体回火 |
Effect of Si, Mn and Al on the Microstructure and Mechanical Properties of ADI Weld Metal |
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| Daqian SUN,Zhenfeng ZHOU,Wenquan WANG,Lian LIU. Effect of Si, Mn and Al on the Microstructure and Mechanical Properties of ADI Weld Metal[J]. Journal of Materials Science & Technology, 2002, 18(3): 271-274 |
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| Authors: | Daqian SUN Zhenfeng ZHOU Wenquan WANG Lian LIU |
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| Affiliation: | School of Materials Science and Engineering, Jilin University, Changchun 130025, China... |
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| Abstract: | The effects of Si, Mn and Al on the microstructure and mechanical properties of ADI weld have been studied. The microstructure of ADI weld metal mainly consists of bainitic ferrite and retained austenite. Mechanical properties of ADI weld increase with increasing Si content, but an excess of Si(3.79%) results in decreasing the austemperability owing to decreasing the carbon content of the matrix austenite. Mn increases the retained austenite volume fraction, but the ductility and impact toughness of weld obviously decrease with increasing Mn content because of increased amount of martenite and twin martenite. In the range of 0.13%-0.64%AI, increasing Al content favours improving the mechanical properties of ADI weld. Therefore, it is very important to select suitable Si, Mn and Al contents to improve mechanical properties of ADI weld. |
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| Keywords: | ADI weld metal Microstructure Mechanical properties |
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