Characteristics of hot cracking in dissimilar joint of A690 overlay and stainless steel clad
作者: Gyoungback KoKang Myung SeoHee Jin KimHyunuk Hong
作者单位: 1Changwon National University
2KITECH
刊名: Welding in the World, 2017, Vol.61 (5), pp.945-953
来源数据库: Springer Journal
DOI: 10.1007/s40194-017-0477-2
关键词: Dissimilar weldLiquation crackingAlloy 690Laves phase
英文摘要: Hot cracks frequently encountered during nuclear vessel fabrication in dissimilar joints between Nb-containing A690 overlay weld and stainless steel clad. This phenomenon was duplicated in three-pass bead-on-plate SMA welds and confirmed by a mock-up test to identify the major type of hot cracking and to investigate the root cause of cracking. Microstructural studies showed that two types of eutectic reaction products, i.e., NbC or Laves phase, were formed and their contents increased with the dilution extent of stainless steel clad. In addition, all hot cracks observed near stainless steel clad were identified as a type of liquation cracks, associating with partial melting of Laves phase during subsequent weld passes. Since the proportion of Laves phase increased with the dilution, the...
原始语种摘要: Hot cracks frequently encountered during nuclear vessel fabrication in dissimilar joints between Nb-containing A690 overlay weld and stainless steel clad. This phenomenon was duplicated in three-pass bead-on-plate SMA welds and confirmed by a mock-up test to identify the major type of hot cracking and to investigate the root cause of cracking. Microstructural studies showed that two types of eutectic reaction products, i.e., NbC or Laves phase, were formed and their contents increased with the dilution extent of stainless steel clad. In addition, all hot cracks observed near stainless steel clad were identified as a type of liquation cracks, associating with partial melting of Laves phase during subsequent weld passes. Since the proportion of Laves phase increased with the dilution, the...
全文获取路径: Springer  (合作)
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来源刊物:
影响因子:0.477 (2012)

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关键词翻译
关键词翻译
  • stainless 不锈的
  • steel 
  • overlay 涂层纸
  • cracking 裂开
  • dissimilar 不同的
  • liquation 熔离
  • joint 节理
  • containing 包含的
  • dilution 稀度
  • attributed 属性