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材料工程  2018, Vol. 46 Issue (2): 93-98    DOI: 10.11868/j.issn.1001-4381.2014.001371
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
不同基体热浸镀铝镀层组织和高温磨损行为
周德琴, 陈伟, 张秋阳, 周银, 崔向红, 王树奇
江苏大学 材料科学与工程学院, 江苏 镇江 212013
Microstructure and High-temperature Wear Behavior of Hot-dipped Aluminized Coating on Different Substrate Materials
ZHOU De-qin, CHEN Wei, ZHANG Qiu-yang, ZHOU Yin, CUI Xiang-hong, WANG Shu-qi
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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摘要 选取45钢和H13钢进行热浸镀铝和高温扩散处理,采用X射线衍射(XRD)、扫描电镜(SEM)、能谱仪(EDS)等微观分析手段表征镀层物相、形貌和成分。采用销盘式高温磨损试验机对比研究不同基体下镀层的干滑动高温磨损行为,并探讨其磨损机制。结果表明:扩散层均以FeAl和Fe3Al韧性相为主,两相之间界面周围存在平行于表面的Kikendall孔洞;镀层与45钢基体过渡平缓,结合良好,而与H13钢界面之间存在颗粒聚集,导致镀层与H13钢基体结合较差;45钢镀层在400℃/50~200N具有较好耐磨性,随环境温度升高,出现轻微-严重的磨损转变;H13钢镀层在400℃磨损率较低,在600℃也仅略高于400℃;Fe-Al镀层的磨损机制以氧化轻微磨损为主,45钢镀层在600℃出现塑性挤出磨损。
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周德琴
陈伟
张秋阳
周银
崔向红
王树奇
关键词 金属间化合物高温磨损热浸镀铝磨损行为磨损机制    
Abstract:The aluminized 45 and H13 steel were prepared via hot-dipped aluminizing and subsequently high-temperature diffusion treatment. The phase, morphology and composition of aluminized coating were characterized by XRD,SEM and EDS methods. Comparative study was performed on unlubricated sliding wear behavior of plating under different substrates on a pin-on-disc wear tester, and the wear mechanism was explored. The results show that the coating is composed of ductile phases FeAl and Fe3Al. Kikendall porosity parallel to the surface exists around the interface of the two phases; because of the carbide particles agglomeration, the bond between the coating and H13 steel is apparently inferior to that in the case of 45 steel; the aluminized 45 steel possesses an excellent wear resistance under 50-200N at 400℃, whereas mild-to-severe wear transition occurs when the temperature increases to 600℃. The wear rate of the aluminized H13 steel reaches the lowest at 400℃, then slightly increases at 600℃. The wear mechanisms of Fe-Al coating are mainly predominated by oxidative mild wear, whereas the extrusion wear prevails in the process for aluminized 45 steel at 600℃.
Key wordsintermetallic compound    high-temperature wear    hot-dipped aluminizing    wear behavior    wear mechanism
收稿日期: 2014-11-20      出版日期: 2018-02-01
中图分类号:  TH117  
通讯作者: 崔向红(1963-),女,副教授,博士,主要从事金属基复合材料及摩擦磨损方面的研究工作,联系地址:江苏省镇江市学府路301号江苏大学材料科学与工程学院(212013),miracle8980@126.com     E-mail: miracle8980@126.com
引用本文:   
周德琴, 陈伟, 张秋阳, 周银, 崔向红, 王树奇. 不同基体热浸镀铝镀层组织和高温磨损行为[J]. 材料工程, 2018, 46(2): 93-98.
ZHOU De-qin, CHEN Wei, ZHANG Qiu-yang, ZHOU Yin, CUI Xiang-hong, WANG Shu-qi. Microstructure and High-temperature Wear Behavior of Hot-dipped Aluminized Coating on Different Substrate Materials. Journal of Materials Engineering, 2018, 46(2): 93-98.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2014.001371      或      http://jme.biam.ac.cn/CN/Y2018/V46/I2/93
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