Relationship between Atmospheric Dew Point and Sinterability of Al-Si Based Alloy  

作　　者：A. Manonukul A. Salee 

机构地区：[1]National Metal and Materials Technology Center, 114 Thailand Science Park,Paholyothin Rd. [2]TAIST Tokyo Tech Automotive Engineering Program, International College, King Mongkut’s Institute of Technology Ladkrabang,Chalongkrung Rd.

出　　处：《Journal of Materials Science & Technology》2013年第1期70-76,共7页材料科学技术（英文版）

摘　　要：Al-Si based alloys are interestingly used to produce automotive components. Fabrication of such components by powder metallurgy （PM） has been developed continuously. During PM, several parameters affect the sinterability of the aluminium powder, including atmospheric dew point which is regarded as one of the crucial parameters. The objective of this work was to investigate the effect of the atmospheric dew point on the sinterability of AI-14.9Si-2.4Cu-0.55Mg by studying the sintering characters obtained under various atmospheric dew points. The aluminium alloy powder was pressed into tensile specimens and subsequently sintered in a nitrogen atmosphere at 560 ℃ for 60 min with varied atmospheric dew points. The results show that as the dew point decreased, the sintered properties were improved. The atmospheric dew point of -38.4 ℃ is sufficient to obtain good sintering characters and it is achievable in a commercial furnace.Al-Si based alloys are interestingly used to produce automotive components. Fabrication of such components by powder metallurgy （PM） has been developed continuously. During PM, several parameters affect the sinterability of the aluminium powder, including atmospheric dew point which is regarded as one of the crucial parameters. The objective of this work was to investigate the effect of the atmospheric dew point on the sinterability of AI-14.9Si-2.4Cu-0.55Mg by studying the sintering characters obtained under various atmospheric dew points. The aluminium alloy powder was pressed into tensile specimens and subsequently sintered in a nitrogen atmosphere at 560 ℃ for 60 min with varied atmospheric dew points. The results show that as the dew point decreased, the sintered properties were improved. The atmospheric dew point of -38.4 ℃ is sufficient to obtain good sintering characters and it is achievable in a commercial furnace.

关 键 词：Aluminium alloys SINTERING Mechanical characterisation Atmospheric dew point 

分 类 号：TF124[冶金工程—粉末冶金]