王馨缘,李亮,吴启迪,王晨充,梁晓东,杨坪,王旭

• 1:辽宁石油化工大学机械工程学院
• 2:沈阳晨光弗泰波纹管有限责任公司
• 3:东北大学轧制技术及连轧自动化国家重点实验室

摘要(Abstract)：

采用扫描电镜、X射线衍射仪、显微硬度仪及拉伸试验等研究了不同奥氏体化温度对轧态C61钢的显微组织和力学性能的影响。结果表明:奥氏体化温度为950℃的热处理工艺能使轧态C61钢获得良好力学性能,其抗拉强度、屈服强度、伸长率以及断面收缩率分别为1376 MPa、997 MPa、13.8%、62.5%。随奥氏体化温度升高,试验钢的断裂机制从韧性断裂转变为韧性+准解理断裂,奥氏体化温度为950℃时,断口组织均匀且韧性最好。当奥氏体化温度较低时,显微组织中马氏体板条较细小,随着温度的升高,马氏体板条束宽度增大,导致轧态C61钢强度、硬度降低。奥氏体化温度对钢中残留奥氏体含量有所影响,在1000℃时残留奥氏体最多、硬度最低。

关键词(KeyWords)： 轧态C61钢;奥氏体化温度;显微组织;力学性能;热处理

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51574147);; 辽宁省自然科学基金(201602474)

作者(Author): 王馨缘,李亮,吴启迪,王晨充,梁晓东,杨坪,王旭

DOI: 10.13289/j.issn.1009-6264.2021-0043

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