期刊文献+

微量B对440MPa级焊条熔敷金属低温冲击韧性的影响 被引量:6

Effect of Trace Boron on the Impact Toughness of 440MPa Deposited Metal
下载PDF
导出
摘要 通过药皮过渡添加B,研究了微量B对440MPa级焊条熔敷金属低温冲击韧性的影响。试验发现,冲击韧性对B含量的变化较敏感,同时当焊缝中Ti含量不同时,B含量的影响也不同。当Ti含量为0.01%~0.04%(ω)时,B含量在30×10^-6(ω)左右时韧性最好;当Ti含量为0.04%~0.07%时,B含量在(40-90)×10^-6范围内韧性最好。B含量适中时熔敷金属组织几乎全是均匀细小的针状铁素体,B含量过低组织中出现大量的先共析铁素体,B含量过高则会生成沿原奥氏体晶界分布的粒状贝氏体和上贝氏体。 Effect of trace boron on the impact toughness of 440MPa deposited metal has been investigated. It was found that the best impact toughness was obtained by maintaining boron contents within 30ppm when Ti content is 0.01% - 0.04 % and 40ppm-90ppm when Ti content is 0.04 96 -0.07 96 respectively. With the boron contents in these ranges, the microstructure of the deposited metal is almost fine acicular ferrite. Otherwise there will be large volume fraction of pro-eutectoid ferrite or upper bainite and granular bainite along the prior austenite grain boundary which will deteriorate the impact toughness.
出处 《材料开发与应用》 CAS 2006年第2期18-23,共6页 Development and Application of Materials
关键词 微量硼 冲击韧性 上贝氏体 熔敷金属 Trace boron Impact toughness Upper hainite Deposited metal
  • 相关文献

参考文献8

  • 1Evans G M,Bailey N.Metallurgy of basic weld metal[M].Willia Andrew Inc,1997.323.
  • 2Oh D W.The influence of boron and titanium on low carbon steel weld metal[J].Welding Journal,1990,69(4):151-158.
  • 3周丽霞,邰潭华,张滨,陈家行.微量合金元素对Si-Mn-Mo系焊缝显微组织和韧性的影响[J].西安交通大学学报,1994,28(4):66-72. 被引量:3
  • 4Thewlis G.Weldability of X100 linepipe[J].Science and Technology of Welding and Joining,2000,5(6):365-377.
  • 5Ishikawa T,Haza T.Significance of fracture facet size in cleavage fracture process of welded joints Mater [J].Sci Eng.1994,A176:385.
  • 6Young Joo Oh,Sang-Yoon Lee. No-metallic Inclusions and acicular ferrite in low carbon steel[J]. Materials Transactions, JIM, 2000,41 (12):1663-1669.
  • 7Kohichi Yamamoto, Effect of boron on Intra-granular ferrite formation in Ti-Oxide bearing steels[J]. ISIJ International, 1996,36 (1) : 80- 86
  • 8Bhadeshia H K D H. Bainite in steels[ M]. IOM Communications Ltd,2001, 19-25.

二级参考文献2

  • 1陈伯蠡,焊接冶金原理,1991年
  • 2王笑天,金属材料学,1987年

共引文献2

同被引文献93

引证文献6

二级引证文献33

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部