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Analysis on fracture separated defect of DH36 high strength ship plate after tension test
Author(s): 
Pages: 21-23,41
Year: Issue:  1
Journal: Research on Iron and Steel

Keyword:  DH36高强度船板分离断口带状组织锰偏析;
Abstract: 用金相显微镜、扫描电镜对分离断口的形貌、金相组织进行了观察,用能谱仪分析了分离断口分离处的夹杂物及中心区域的微区成分,探讨了DH36高强度船板常温拉伸试验出现断口分离的原因.结果表明:中心部位的Al、Ca、Si、Mn类氧化物、硫化物的复合化合物是导致试样在拉伸过程中出现分离的重要原因,而中心区域的锰偏析和明显的带状组织是DH36高强度船板常温拉伸断口产生分离的根本原因.
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