Effect of welding process methods on the regularity of iron element in copper/steel deposited layer

被引:0
作者
王艳
李龙庆
卢红
王君君
机构
[1] CollegeofMaterialScienceandEngineering,XihuaUniversity
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中图分类号
TG457 [各种金属材料和构件的焊接];
学科分类号
摘要
Copper was surfaced on the Q235 substrate by shielded metal arc welding(SMAW) and tungsten inert-gas(TIG)arc welding,the regularity of iron element in deposited metal was analyzed by metallograph,scanning electron microscopy and energy disperse spectroscopy.The results indicate that with the increase of SMAW welding speed,the iron content decreases and the granular or spherical iron becomes more bulky in the overlay.The iron content obviously decreases with the increase of surfacing layers' numbers in multilayer welding because of the substrate dilution.On the third layer,the microstructure of deposited metal is single-phase e-copper.Under the influence of welding methods,the granular or spherical crystal morphology is more likely to form in SMAW for the more divergent arc heat,but is dendrite in TIG welding because of centralized arc energy.
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页码:55 / 59
页数:5
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