[1]张格,谢飞,潘建伟.45钢表面交流电场增强粉末法铝氮复合渗研究[J].常州大学学报(自然科学版),2016,(04):54-58.[doi:10.3969/j.issn.2095-0411.2016.04.010]
　ZHANG Ge,XIE Fei,PAN Jianwei.Study on Alternating Current Field Enhanced Pack Aluminizing Plus Nitriding of 45 Carbon Steel Surface[J].Journal of Changzhou University(Natural Science Edition),2016,(04):54-58.[doi:10.3969/j.issn.2095-0411.2016.04.010]
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45钢表面交流电场增强粉末法铝氮复合渗研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2016年04期
页码:
54-58
栏目:
材料科学与工程
出版日期:
2016-07-30

文章信息/Info

Title:
Study on Alternating Current Field Enhanced Pack Aluminizing Plus Nitriding of 45 Carbon Steel Surface
作者:
张格1; 谢飞1; 2; 潘建伟3
1.常州大学 材料科学与工程学院,江苏 常州 213164; 2.常州市金属材料重点实验室,江苏 常州 213164; 3.常州大学 怀德学院,江苏 常州 213016
Author(s):
ZHANG Ge1; XIE Fei 1; 2;  PAN Jianwei 3
1.School of Materials Science and Engineering,Changzhou University,Changzhou 213164,China; 2.Key Laboratory of Advanced Metallic Materials of Changzhou City,Changzhou University,Changzhou 213164,China; 3.Huaide College, Changzhou University,Changzhou 2130
关键词:
粉末法铝氮复合渗;  交流电场;  显微组织;  硬度;  45钢
Keywords:
pack aluminizing plus nitriding;  alternating current field;  microstructure;  hardness;  45 carbon steel
分类号:
TG 156.8
DOI:
10.3969/j.issn.2095-0411.2016.04.010
文献标志码:
A
摘要:
针对现有铝氮复合渗工艺存在的渗层薄、渗扩时间长等问题,对置于两电极间的45钢试样与渗剂施加交流电场,进行交流电场增强粉末法铝氮复合渗。通过观察分析不同工艺所得试样的渗层组织、相结构与硬度分布,初步研究了交流电场增强45钢表面粉末法铝氮复合渗特性。结果表明:在复合渗的渗铝阶段施加交流电场不仅加快渗铝速度,还能够避免常规粉末法渗铝在表面形成富铝相对后续渗氮的阻碍; 在后续渗氮中施加交流电场可促进氮渗入与渗铝层反应,在共渗层表层形成AlN和Fe3N; 通过将4 h的交流电场增强渗铝与4 h电场渗氮复合,能够获得有效厚度在150 μm以上的复合渗层。
Abstract:
Alternating current field enhanced pack aluminizing plus nitriding(ACFEPAN)was carried out on 45 steel surface by applying ACF to the sample and treating agents with a pair of electrodes for overcoming shortcomings of thin cases and long treating time in conventional pack aluminizing plus nitriding process. By investigating cases’ structures, phases and hardness distributions of differently treated samples, a preliminary study was made on characterizations of ACFEPAN on the surface of 45 steel. The results show that the alternating current field(ACF)not only speed up aluminizing but also can avoid the formation of aluminium-rich phases during the alternating current field enhanced pack aluminizing. The aluminium-rich phases formed by conventional pack aluminizing prevent the diffusion of N into the aluminizing case during the later nitriding. By applying ACF to nitriding, the infiltration of nitrogen into the aluminizing case is promoted, and N reacts with the aluminizing case to form AlN and Fe3N. A case with an effective thickness of more than 150 μm can be obtained by alternating current field enhanced 4 h pack aluminizing plus 4 h nitriding.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-03-01。基金项目:国家自然科学基金(51171032)。作者简介:张格(1990—),女,山东莱州人,硕士生。通讯联系人:谢飞(1964—), E-mail: xiefei@cczu.edu.cn
更新日期/Last Update: 2016-08-30