铸造技术2017，Vol.38Issue(4)：910-913,4.DOI:10.16410/j.issn1000-8365.2017.04.044
大线能量焊接船板钢焊缝冲击性能及断口分析
Impact Performance and Fracture Analysis of Shipbuilding Steel Weld Under Large Heat Input Welding
摘要
Abstract
Submerged arc welding experiment with the heat input of 100 kJ/cm was conducted in DH36 ship plate with the thickness of 25 mm.The macrostructure and microstructure of welded joint was observed.The impact energy tests and fracture analysis of welded joint at-40 ℃ were studied.The results show that the grain boundary structure at the center of weld is proeutectoid ferrite,and the intragranular structure consists of acicular ferrite and pearlite.At the impact temperature of-40 ℃,impact performance at the center of the weld is significantly higher than that of fusion zone.Impact fracture of fusion zone belongs to brittle fracture.Impact fracture of the weld center belongs plastic fracture.关键词
焊缝/熔合线/冲击性能/断口Key words
weld/fusion zone/impact performance/fracture分类
矿业与冶金引用本文复制引用
李少英,韩毅华,朱立光,张庆军,高爱民..大线能量焊接船板钢焊缝冲击性能及断口分析[J].铸造技术,2017,38(4):910-913,4.基金项目
河北省自然科学基金-钢铁联合研究基金资助项目(E2014209144,E2015209207) （E2014209144,E2015209207）
河北省高等学校科学技术研究项目资助(ZD2014012) （ZD2014012）
