摘要
将X65MS/镍基耐蚀825合金组坯抽真空后,对称轧制成复合板。分析了不同压下率对复合板强度、冲击值、落锤试验、硬度、耐腐蚀性和晶间腐蚀的影响。结果表明,采用大压下量工艺生产的复合板能明显细化钢板组织,增加基层碳钢低温韧性,使界面析出物细小弥散,具有高的界面剪切强度。大压下量工艺生产的复合板复层抗晶间腐蚀能力优于小压下量工艺生产的钢板。虽然大压下量工艺生产的复合板由于晶粒更细化,硬度有所上升,但上升幅度小,仍能满足标准要求。
X65MS/nickel-based 825 corrosion resistant alloy steel billet were symmetrically rolled into cladding plate after vacuum, the effect of different reduction on the tensile strength, impact energy, DWTT, hardness, corrosion resistant and intergranular corrosion performance were analyzed. The results showed that the large reduction process can significantly refine steel plate microstructure, increase low temperature toughness of basic material, make the interface precipitates tiny and dispersed, and it is with high interfacial shear strength. Intergranular corrosion resistant of cladding plates with large reduction is better than that of the lower reduction plate. Although the more refined gain size under the process of large reduction, the hardness increases slightly, but still can meet standard requirements.
出处
《焊管》
2015年第11期9-14,共6页
Welded Pipe and Tube
关键词
复合板
压下率
镍基合金
组织性能
clad plate
reduction rate
nickel-based alloy
microstructure and property
