中文摘要：

研究了亚温淬火工艺和原始组织对一种新型射孔枪管用钢组织和性能的影响。结果表明,随亚温淬火温度升高,试验钢的晶粒增大,硬度呈先增大后降低的趋势;随回火温度升高,钢的硬度和强度逐渐降低,断面收缩率和冲击吸收能量逐渐增大;经分析最佳热处理工艺为840℃亚温淬火＋560℃回火,以此工艺下处理后调质态试验钢的综合力学性能最优。

英文摘要：

Effects of subcritical quenching process and original structure on microstructure and properties of a novel steel for perforating gun barrel were investigated. The results show that with subcritical quenching temperature increasing,the grain of the steel increases,and the hardness increases first and then decreases. With the increase of the tempering temperature,the hardness and strength of the steel decrease,while shrinkage of section and the impact energy increase. The best heat treatment process is 840 ℃ subcritical quenching and560 ℃ tempering,and treated with this process for the as-quenched and tempered steel the comprehensive mechanical properties of are the best.