【摘要】 本文通过拉伸试验、显微组织观察以及物相分析等方法,研究了配分温度和配分时间对22SiMnCrNi2Mo钢抗拉强度与断后伸长率的影响。结果表明,淬火配分后组织主要为板条状马氏体和少量残余奥氏体。随着配分温度的升高,抗拉强度显著降低,断后伸长率先提高后降低;随着配分时间的延长,抗拉强度降低,而伸长率提高。更多还原

【Abstract】 In this paper, the effects of partitioning temperature and partitioning time on the tensile strength and elongation after breaking of 22 SiMnCrNi2 Mo steel are studied through tensile test, microstructure observation and phase analysis..The results show that the microstructure after quenching and partitioning is mainly lath martensite and a small amount of retained austenite.With the increase of partitioning temperature, the tensile strength decreases significantly, and the elongation increases first and then decreases,and the tensile strength decreases with the extension of partitioning time. The elongation increases.更多还原