690 MPa级特厚调质钢板工艺与性能试验研究
Research on Process and Mechanical Properties of 690 MPa Quenching and
章传国, 郑 磊, 高 珊, 辛彬楠
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作者单位：(宝山钢铁股份有限公司 宝钢研究院结构钢所, 上海 201900)
中文关键字：特厚板； 调质； 组织； 性能； 高强度
英文关键字：ultra-heavy plate; quenching and tempering; microstructure; mechanical property; high strength
中文摘要：实验室研究了一种屈服强度为690 MPa级特厚高强调质钢板的工艺与性能之间的关系。结果表明：采用低C并添加Cr、Mo、V的合金成分设计，经厚板轧制后，通过900 ℃淬火 ＋ 650 ℃回火调质处理，实验钢板可以获得最佳的组织和性能，满足ASTM517Q标准对100 mm厚特厚钢板的强度及冲击韧度的要求。
英文摘要：The relationship between process, microstructure and mechanical properties of high strength ultra heavy plate with 100 mm thickness, which is low carbon, Cr-Ni-Mo alloying composition designed, was investigated in laboratory. The results show that the optimal microstructure and properties can be obtained by quenching at 900 ℃ and tempering at 650 ℃. The mechanical properties of the plate can meet the requirements of ASTM517Q specification.