| 摘要: |
| 本文通过等温热处理系统地研究了Cu、Ni、Mo对球铁焊缝金属等温转变,奥-贝化能力及机械性能的影响,井利用X射线衍射仪、扫描电镜、透射电镜研究了低合金奥-贝球铁焊缝的基体结构,分析讨论了其强韧化机制,在此基础上首次研制成功了Ni-Mo低合金奥-贝球铁析焊分,与非合金化奥-贝球铁焊条相比,焊缝金属的奥-贝化能力提高2.5倍,其焊缝与焊接接头的机械性能均满足奥-贝球铁的要求。 |
| 关键词: 低合金奥-贝球铁 电弧焊 焊条 |
| DOI： |
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| Development of a low-alloy electrode for arc welding of austempered ductile iron |
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Sun Daqian1, Zhang Zhaozhi1, Zhou Zhenfeng1, Bian Xixian2
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1.Jilin University of Technology, Changchun;2.Electrical Engineering Equipment Co. China
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| Abstract: |
| Effects of Cu, Ni and Mo on the isothermal transformation,austemperability and mechanical properties of ductile iron weld metal were systematically investigated and the matrix structure of austemoered ductile iron weld was examined with scanning electron microscope and transmission electron microseope.On this basis a Ni-Mo low alloy electrode for arc welding of austempered ductile iron was developed for the first time,The austemperability of the Ni-Mo low,alloy weld metal increases by 2.5 times as compared with that of the unalloyed weld metal and the mechanical properties of the weld and welded joint can match the requirement of austenpered ductile iron. |
| Key words: low-alloy austempered ductile iron are welding electrode |
