不同热处理状态下Al-Zn-Sn-Bi-Ti-B合金的组织与性能  

Structures and Properties of Al-Zn-Sn-Bi-Ti-B Alloy in Different Heat Treatment Conditions

作　　者：史志红[1] 文九巴[1,2] 马景灵[1] 贺俊光[1] 王国伟[1] 

机构地区：[1]河南科技大学 材料科学与工程学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003

出　　处：《热处理》2010年第3期18-21,共4页Heat Treatment

基　　金：河南省科技创新杰出人才计划(094200510019);河南省自然科学基金项目(092300410132)

摘　　要：用电化学测试系统研究了热处理工艺对阳极用Al-Zn-Sn-Bi-Ti-B合金微观组织与电化学性能的影响。结果表明,热处理后合金的电流效率比铸态的低,其中经460℃固溶处理的试样电流效率最高,但仍低于铸态合金1.3%。合金经退火和固溶处理后,其晶粒均发生长大,第二相数量较少并弥散分布于晶粒内。热处理后合金自腐蚀电位偏移,电化学性能变差,因而Al-Zn-Sn-Bi-Ti-B合金可不经热处理而直接应用。The microstructures and electrochemical properties of Al-Zn-Sn-Bi-Ti-B alloy for anode in varied heat treatment conditions were investigated by means of electrochemistry measuring system. The results show that the current efficiency of the alloy after heat treating is lower than that of as-cast alloy, and that the current efficiency of the alloy solution-treated at 460 ℃ is the greastest but 1.3% lower than that of the as-cast alloy. The grains are coarser and the second phases are less and disperse in the grains insofar as the alloy annealed or solution-treated. After being heat-treated, the self-corrosion potential of the alloy will deflect and the electrochemical performance will become worse, thus this alloy can be directly used without being heat-treated.

关 键 词：热处理 铝合金 牺牲阳极 

分 类 号：TG166.3[金属学及工艺—热处理]