丁志敏,于颖颖,李鸿娟,韩礼红,杨金玲

• 1:大连交通大学材料科学与工程
• 2:中国石油集团石油管工程技术研究院
• 3:大连华锐重工集团股份有限公司

摘要(Abstract)：

通过显微组织观察、X射线物相分析以及硬度和3.5%Na Cl水溶液浸泡失重等实验方法研究了铝镀层/60Si_2Mn A钢试样淬火和回火处理前后的组织结构和性能。结果表明:热浸镀铝获得的铝镀层/60Si_2Mn A钢试样经920℃淬火和480℃回火后,表层的组织结构由外层含有Al_2O_3膜和Fe-Al相的多孔层、内层呈白亮的铝固溶层和基体的回火屈氏体组成,外层和内层间结合牢固、没有出现裂纹。表层的硬度梯度由最外层的高硬度,800~934 HV快速地降低到内层的低硬度区,尔后在基体区域稍有增加后保持不变,约为420 HV,以及在3.5%Na Cl溶液中的耐蚀性将提高73%。并且,淬火加热时间还将对表层的组织结构和性能产生一定程度的影响。

关键词(KeyWords)： 弹簧钢;热浸镀铝;热处理;组织结构;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 丁志敏,于颖颖,李鸿娟,韩礼红,杨金玲

DOI: 10.13289/j.issn.1009-6264.2015.s2.034

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