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| 1 | SiC含量对Al/SiC纳米复合材料干滑动磨损、腐蚀以及腐蚀磨损行为的影响(英文)显示文摘纳米复合材料的腐蚀、腐蚀磨损以及干摩擦磨损行为非常复杂,受化学、物理和机械等多方面因素影响。采用机械球磨、冷压和热挤压技术制备Al/SiC纳米复合材料,研究纳米SiC含量对材料硬度、干滑动磨损、腐蚀和腐蚀磨损行为的影响。采用电化学极化测试研究了复合材料在3%NaCl溶液中的抗腐蚀性能。采用盘-销装置研究了复合材料的干滑动磨损和在3%NaCl溶液中腐蚀磨损性能。利用扫描电子显微镜研究了材料及磨损表面的显微组织。结果表明,随着SiC含量的增加,纳米复合材料的干滑动摩擦和抗腐蚀性能均得到提高。由于溶液的润滑作用,使材料软化的摩擦因数和摩擦生热均降低。与基体合金相比,纳米复合材料的强度和抗腐蚀性能提高,因此其抗腐蚀磨损性能也提高。对于未增强的基体合金,其磨损机理为黏着磨损,而对于Al/SiC纳米复合材料,磨损机理转变为磨粒磨损。 | Sareh MOSLEH-SHIRAZI Farshad AKHLAGHI Dong-yang LI | 2016 | Transactions of Nonferrous Metals Society of China2016，26，7： | 3 |
| 2 | Fabrication and characterization of nanocrystalline Al/Al_(12)(Fe,V)_3Si alloys by consolidation of mechanically alloyed powders显示文摘The aim of this study was to produce bulk nanocrystalline Al/Al_(12)(Fe,V)_3Si alloys by mechanical alloying(MA) and subsequent hot pressing(HP) of elemental powders.A nanostructured Al-based solid solution was formed by MA of elemental powders for 60 h.After HP of the as-milled powders at 550℃ for 20 min,the Al_(12)(Fe,V)_3Si phase was precipitated in a nanocrystalline Al matrix.Scanning electron microscopy(SEM) images of the bulk samples represented a homogeneous and uniform microstructure that was superior to those previously obtained by rapid solidification-powder metallurgy(RS-PM).Nanostructured Al-8.5Fe-1.3V-1.7Si and Al-11.6Fe-1.3V-2.3Si alloys exhibited high HV hardness values of^205 and ~254,respectively,which are significantly higher than those reported for the RS-PM counterparts. | Hamid Ashrafi Rahmatollah Emadi Mohammad Hosein Enayati | 2014 | International Journal of Minerals,Metallurgy and Materials2014，21，7： | 2 |
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