Ti对耐热导电铝合金微观组织和性能的影响  

Effects of Ti on Microstructure and Properties of Heat Resistant Conductive Aluminum Alloy

作　　者：刘潇[1] 杨昇[1] 赵艳[1] 

机构地区：[1]郑州大学材料物理教育部重点实验室

出　　处：《特种铸造及有色合金》2011年第9期862-865,共4页Special Casting & Nonferrous Alloys

摘　　要：研究了Ti对含有Zr和B的耐热导电铝合金微观组织和性能的影响。结果表明,在耐热导电铝合金中加入Ti,Ti和Zr、B形成复合粒子(Ti,Zr)B2。因(Ti,Zr)B2晶格常数较ZrB2小,使铝基体的畸变能减小,基体的有序性增加,使铝合金的电导率提高。调整B的含量,使B与Ti+Zr的摩尔比达到2:1以上,同时避免Ti过量,铝合金的电导率会进一步提高。Effects of Ti on microstructure and properties of heat resistant conductive aluminum alloy contained Zr and B were investigated.The results show that,with Ti addition,compound（Ti,Zr）B2 phase is formed with Zr and B in the alloy.Distortion of Al matrix is decreased and order in Al matrix is increased as a result of lattice constant of（Ti,Zr）B2 phase lower than ZrB2,improving the conductivity of Al alloy.Through adjusting B content,the molar ratio of B via Ti＋B is more than 2：1 in the absence of excessive Ti,further improving the conductivity of the Al alloy.

关 键 词：导电铝合金 电导率 ZR TI B 

分 类 号：TG146.21[一般工业技术—材料科学与工程]