摘要
通过成分设计、冶炼和轧制工艺优化,利用50 kg真空感应炉冶炼试制了高级别船舶用钢,并分析了不同成分及不同回火温度对船舶用钢力学性能的影响,同时利用扫描电镜对冲击断口进行分析。结果表明,提高回火温度,试验钢强度下降,塑性提高;提高Ni、Mo含量,其强度和塑性均提高,脆性转变温度从-70℃提到到-90℃,钢的屈服强度均在800 MPa以上,抗拉强度870 MPa以上,伸长率达到17%以上,-80℃冲击功80 J以上。
Based on the chemical composition design, optimization of smelting and rolling technology, 50 kg vaeuum induetim furuaee was used to smelt test fur the high grade hull-structure steel, and the affection about mechanical properties of ship steel at different compositions and tempering temperatures were analyzed. The analysis of impact fracture surface was obtained by scanning electron microscope （SEM）. The results show that with increasing tempering temperature, the strength and plasticity inereased. By adjusted the element content of Ni, Mo, its strength and plasticity are improved. The brittle transition temperature is from -70 ℃ to - 90℃, the steel yield strength are above 800 MPa, tensile strength is more than 870 MPa, the elongation reached more than 17%, impact absorbed energy is more than 80 J at -80℃.
出处
《山东冶金》
CAS
2016年第2期16-17,共2页
Shandong Metallurgy
关键词
船舶用钢
合金强化
回火温度
脆性转变温度
ship buihting section
alloy strengthening
tempering temperature： brittle transition temperature
作者简介
裴建华，男，1982年生，2009年毕业于东北大学材料加工专业，硕士。现为山钢集团钢铁研究院工程师，从事新产品开发工作。
