EPM处理Q235钢方坯热加工后组织与性能

Structure and Property of Heating WorkingQ235 Bloom by EPM Treated

摘要: 通过对电脉冲孕育(EPM)处理和未经处理的Q235钢连铸小方坯热加工后组织及性能的比较,研究了经EPM处理后改善和细化了的凝固组织对热加工后组织和性能的影响。研究结果表明,经EPM处理后的Q235钢连铸小方坯锻造、热处理后的组织均匀,比未经处理钢的晶粒更为细小,晶粒尺寸由40μm减小到20μm;σ_U提高了6.9%,α_k值提高了10%。

Abstract: Compared the structure and property of Q235 continuous casting bloom by EPM treating with no-treating after heating working, the influence of structure and prop-erty of heating working with improved and fined casting structure by EPM treating have been researched. The results shown that the structure of heating working by EPM treating is more even, and the crystal is finer than no-treating. The σ_U increases 6.9%, and α_k increases 100%.