Thermodynamic Analysis of the Formation of In-situ Reinforced Phases In Cast Al-4.5Cu Alloy  

作　　者：梁艳峰 

机构地区：[1]State Key Laboratory for Mechanical Behavior of Materials,School of Materials Engineering,Xi’an Jiaotong University [2]School of Materials&Chemical Engineering,Xi’an Technological University,Xi'an 710032,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2008年第3期342-345,共4页武汉理工大学学报（材料科学英文版）

摘　　要：The thermodynamic analysis of the formation of in-situ reinforced phases in （TiB2＋Al3Ti）/Al-4.5Cu composites prepared by mixed salts reaction was conducted, and heat changes of mixed salts system were analyzed by differential thermal analysis（DTA）.The results show that although TiB2 possesses the strongest formation ability in Al-Ti-B ternary system, [Ti] is relatively excessive in the in-situ reaction and it combines with Al to form AlaTi phase. The reinforced phases are TiB2 and AlaTi in the produced composites due to the reaction taking place to form reinforced phase with the addition of mixed salts into Al-4.5Cu melt between 900 ℃ and 1 032 ℃.The thermodynamic analysis of the formation of in-situ reinforced phases in （TiB2＋Al3Ti）/Al-4.5Cu composites prepared by mixed salts reaction was conducted, and heat changes of mixed salts system were analyzed by differential thermal analysis（DTA）.The results show that although TiB2 possesses the strongest formation ability in Al-Ti-B ternary system, [Ti] is relatively excessive in the in-situ reaction and it combines with Al to form AlaTi phase. The reinforced phases are TiB2 and AlaTi in the produced composites due to the reaction taking place to form reinforced phase with the addition of mixed salts into Al-4.5Cu melt between 900 ℃ and 1 032 ℃.

关 键 词：in-situ composites thermodynamic  TiB2 AL3TI 

分 类 号：TG27[金属学及工艺—铸造]