Y对AZ61镁合金阻燃及微观组织和力学性能的影响  

Effects of Y on Ignition-proof, Microstructure and Mechanical Properties of AZ61 Mmagnesium Alloy

作　　者：周冰锋[1,2] 闫洪[1] 王涛[1] 

机构地区：[1]南昌大学机电工程学院 [2]江西理工大学南昌校区

出　　处：《特种铸造及有色合金》2009年第10期895-897,共3页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(50765005);江西省自然科学基金资助项目(2007GZC1826);江西省教育厅资助项目

摘　　要：研究了元素Y对AZ61镁合金起燃点及铸态微观组织和力学性能的影响。结果表明,将适量Y加入AZ61镁合金能提高其起燃点,改善组织,细化晶粒。由于显微组织的改善,合金的室温力学性能得到明显提高。当Y含量为1.5%时,合金的起燃点由556℃提高到595℃,提高了39℃,阻燃效果最好。当Y含量为1.0%时,合金的起燃点由556℃提高到592℃,提高了36℃,阻燃效果较好;同时合金晶粒的细化效果最好,其力学性能也最佳,抗拉强度较AZ61镁合金提高了13.5%,伸长率较AZ61镁合金提高了17.8%。Effects of yttrium on the ignition-proof, microstructure and mechanical properties of AZ61 magnesium alloy were investigated. The results indicate that proper Y addition can increase the ignition point and improve the mechanical properties of the alloy as a result in improvement of the structure and refinement of the grain size. The ignition point of the alloy is increased from 556℃ to 595℃ with 1.5% yttrium addition, increased by 39℃, exhibiting the desirable ignition-proof role, while with 1% yttrium addition, the ignition point is increased from 556℃ to 592℃ , increased by 36℃, showing acceptable ignition-proof effects, meanwhile, desirable grain refinement in the alloy can be observedv and tensile strength and elongation are increased by 13.5% and 17.8%, respectively, compared with that of AZ61 matrix alloy, exhibiting the optimal mechanical properties.

关 键 词：阻燃 起燃点 微观组织 力学性能 抗拉强度 伸长率 

分 类 号：TG113[金属学及工艺—物理冶金]