纳米Fe-Al粉电子束改性铝合金的组织和性能Microstructure and performance of aluminum alloys adding nanometer Fe-Al powder on the surface by electron beam modification
王荣,刘科,魏德强
摘要(Abstract):
利用电子束扫描技术对铝合金ADC12表面进行纳米合金化处理,探讨电子束扫描技术对铝合金组织和性能的影响;通过添加不同比例的纳米Al-Fe混合粉末,分别用扫描电子显微镜(SEM)、EDAX能谱仪(EDS)、X射线衍射仪(XRD)等设备对合金层的组织、物相构成、硬度以及摩擦磨损性能进行分析测试,确定合金化纳米混合粉的最佳配比。结果表明:电子束纳米Al-Fe合金化可以提高铝合金材料的硬度、增加耐磨性;随着混合粉中纳米Fe粉含量的增加,合金层中合金硬质强化相逐渐增多,合金化层的硬度和耐磨性也逐渐提高,硬度最高可达800 HV,但组织中会出现裂纹且均匀性不好。当混合粉中纳米Fe粉含量为50%时,合金化层的硬度和耐磨性能较好,其耐热硬度,在675 K时硬度可达到300~400 HV,其磨损量仅为铝合金基材的1/6。
关键词(KeyWords): 铝合金;电子束合金化;金相分析;显微硬度;耐磨性
基金项目(Foundation): 广西自然科学基金(2010GXNSFA013028、2012GXNSFDA053026)
作者(Author): 王荣,刘科,魏德强
DOI: 10.13289/j.issn.1009-6264.2013.05.031
参考文献(References):
- [1]Sanchez J M,Rubio E,lvarez M A,et al.Microstructural characterization of material adhered over cutting tool in the dry machining of aerospacealuminum alloys[J].Journal of Materials Processing Technology,2005,164-165:911-918.
- [2]Paik J K,Van der Veen S,Duran A,et al.Ultimate compressive strength design methods of aluminum welded stiffened panel structures for aerospace,marine and land-based applications:A benchmark study[J].Thin Walled Structures,2005,43:1550-1566.
- [3]Natarajan N,Vijayarangan S,Rajendran I.Wear behavior of A356/25SiCp aluminum matrix composites sliding against automobile friction material[J].Wear,2006,261:812-822.
- [4]刘勇,田保红,刘苏芹.先进材料表面处理和测试技术[M].北京:科学出版社,2008
- [5]GJNNES L,OLSEN A.Laser-modified aluminium surfaces with iron[J].Journal of Materials Science,1994,29:728-735.
- [6]Tomida S,Nakata K.Fe-Al composite layers on aluminum alloy formed by laser surface alloying with iron power[J].Surface and Coatings Technology,2003,174-175:559-563.
- [7]周春华,袁书强,任安峰,等.铸造铝合金电子束改性的组织与性能研究[J].兵器材料科学与工程,2008,31(4):67-71.ZHOU Chun-hua,YUAN Shu-qiang,REN An-feng,et al..Investigation on microstructure and performance of cast aluminum alloy by electron beammodification[J].Ordnance Material Science and Engineering,2008,31(4):67-71.
- [8]王英,程潮丰,甄立玲.电子束合金化处理对铝硅合金组织性能的影响[J].兵器材料科学与工程,2008,31(4):67-71.WANG Ying,CHENG Chao-feng,ZHEN Li-ling.Effect of electron beam surface alloying treatment on Al-Si alloy properties[J].Ordnance MaterialScience and Engineering,2008,31(4):67-71.
- [9]左铁钏.高强铝合金的激光加工[M].北京:国防工业出版社,2008.
文章评论(Comment):
|
||||||||||||||||||
|
||||||||||||||||||