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, Shenyang 110004, China) Abstract: A novel method of preparing hypereutectic Al-Si-Fe alloy was proposed by wavelike sloping plate (WSP) rheocasting device, and the rheocasting and spheroidisation...-Si alloy; wavelike sloping plate; rheocasting; spheroidisation 随着能源短缺,石油价格暴涨和环境污染的加剧,节能环保和提高汽车性能成为国际高度重视的课题.汽车活塞是汽车的关键部件,降低活塞材料的密度,提高其使用性能和降低成本对汽车工业节能,提高车辆寿命和降低运行成本具有重要的现实意义[1-3]. 过共晶Al-Si合金材料密度低,约为......
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材料的裂纹扩展速率却高于基体.关键词:Al-Si合金; SiC颗粒; 复合材料; 喷射沉积; 裂纹扩展; 裂纹闭合......
; 文献标识码:A Influence of side ultrasonic treatment on solidification characterization of Al-Si eutectic alloy LIU Qing-mei, GONG Yong-yong, HOU Xu, QI Fei-peng, ZHAI Qi-jie (School... attenuation into the melt was discussed by the mathematical method. Key words: Al-Si eutectic alloy; power ultrasonic; solidification structure; mechanical property; attenuation  ......
17%,达271.3 MPa. 关键词: Al-Si合金;显微组织;喷射沉积;热稳定性;力学性能 中图分类号:TG 146.21 文献标识码:A Microstructures and properties of spray-deposited Al-17Si-5Fe-2Mn-2Ni-3.5Cu-1Mg-1V alloy SHI...% than that of the former. Key words: Al-Si alloy; microstructure; spray-deposition; thermal stability; mechanical properties  ......
文章编号:1004-0609(2011)06-1258-07 颗粒增强铝基梯度复合材料的摩擦磨损性能 陈聪聪,陈 刚,严红革,苏 斌 (湖南大学 材料科学与工程学院,长沙 410082) 摘 要:采用新型喷射沉积技术制备SiC体积分数呈连续分布(0~30%)的Al-Si基梯度复合材料,利用MG-2000型销-盘磨擦磨损试验机,研究不同滑动转速和载荷对该...损;热压后,梯度材料的磨损形式以磨粒磨损和粘着磨损为主;随基体中SiC含量的逐渐增加,锭坯各部分硬度和耐磨性也随之提高. 关键词:Al-Si梯度复合材料;颗粒增强;耐磨性;磨损机制 中图分类号:TG 146.2+1; TB 333 文献标志码:A Friction and wear properties of particle......
into the Al-P-Ti-TiC modifier, the average size of primary silicon in the Al-20%Si alloy modified by Al-P-Ti-TiC-Y2O3 modifier (approximately 15mm or less) is significantly reduced, and the morphology of eutectic silicon changes from coarse acicular and plate like to refined fibrous. The Brinell hardness (HB189) and tensile strength (301 MPa) of Al-20%Si alloy modified by the Al-P-Ti-TiC-Y2O3 increase......
Improving wear resistance of magnesium by droplet spraying of Al-Si alloyXIE Kun(谢鲲), CAO Mei-qing(曹梅青), XIA Peng-cheng(夏鹏成), YUE Li-jie(岳丽杰)(School of Materials Scinence and Engineering, Shandong University of Science and Technology,Qingdao 266590, China)Abstract:In order to improve the surface hardness and wear resistance of magnesium, Al-13%Si (mass fraction) alloy coating was deposited......