• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Manufacturing Engineering Conference >Effect of B2O3 containing fluxes on the microstructure and mechanical properties in submerged arc welded mild steel plates
【24h】

Effect of B2O3 containing fluxes on the microstructure and mechanical properties in submerged arc welded mild steel plates

机译：B2O3含量对浸没电弧焊接温和钢板微结构和机械性能的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper represents a study on the effect of B2O3 additions in fluxes on the microstructure and mechanical properties of the weld metal formed during Submerged Arc Welding of Mild Steel plates. Five fluxes with about 2.5, 5, 7.5, 10 and 12.5% B2O3 were used with a low carbon electrode. Welding process parameters were kept constant for all the conditions. The microstructure of weld metal for each flux consisted mainly of acicular ferrite, polygonal ferrite, grain boundary ferrites and equiaxed pearlite. It was noted that the Vicker's hardness value was a function of boron content and shows a mixed trend. Impact Energy and Tensile Strength were increased with the increase in boron content in welds this can be attributed to relation with the higher acicular ferrite percentage. However an optimum level of toughness and tensile strength was available with 7.5% and 5% of B2O3 respectively. A qualitative comparison has also be done with fresh flux by means of full metallography and mechanically.
机译：本文代表了B2O3加法在焊接金属的微观结构和机械性能下形成的焊接金属的微观结构和机械性能的研究。与低碳电极一起使用约2.5,5,7.5,10和12.5％B2O3的五个助熔剂。所有条件都保持恒定的焊接工艺参数。每个通量的焊接金属的微观结构主要由针状铁氧体，多边形铁氧体，晶界铁氧体和等轴珠光体组成。有人指出，维克尔的硬度值是硼含量的函数，并显示出混合趋势。随着焊缝中的硼含量的增加，抗冲能量和拉伸强度增加，这可以归因于与较高的针状铁氧体百分比的关系。然而，最佳的韧性和抗拉强度水平分别可获得7.5％和5％的B2O3。通过完整的金相和机械地使用新鲜的助焊剂，以及机械地进行了定性比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号