伊勇,宁静,苏杰,姜庆伟,李佶纳

• 1:昆明理工大学材料科学与工程学院
• 2:钢铁研究总院特殊钢研究院

摘要(Abstract)：

通过光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)和X射线衍射等研究了不同温度淬火对AF9628超高强度钢力学性能和微观组织的影响。结果表明：随着淬火温度的升高，AF9628钢的晶粒逐渐长大，未溶相逐渐溶解，抗拉强度和屈服强度呈现逐渐下降趋势，冲击吸收能量、伸长率和断面收缩率先升高后降低。当淬火温度为970℃时，试验钢的晶粒较为均匀，未溶相大部分溶解，仅剩余微量的碳化物，此时钢的塑性较好，同时有足够的强度，其伸长率、断面收缩率、冲击吸收能量、抗拉强度和屈服强度分别为15%、59%、100 J、1746 MPa和1357 MPa。

关键词(KeyWords)： AF9628超高强度钢;淬火温度;力学性能;微观组织

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 伊勇,宁静,苏杰,姜庆伟,李佶纳

DOI: 10.13289/j.issn.1009-6264.2022-0438

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