直流磁场对Mg_(97)Y_2Cu_1合金凝固组织、结晶织构及力学性能的影响  

Effect of DC Magnetic Field on Solidified Structure, Crystal Texture and Mechanical Properties of Mg_(97)Y_2Cu_1 Alloy

作　　者：谭水淋[1] 周全[1] 陈乐平[1] 肖程波[2] 汤鑫[2] 

机构地区：[1]南昌航空大学,江西南昌330063 [2]北京航空材料研究院先进高温结构材料重点实验室,北京100095

出　　处：《稀有金属材料与工程》2016年第4期934-939,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51261026);航空科学基金(20125356009)

摘　　要：研究了0-1.2 T的直流磁场对长周期结构增强Mg97Y2Cu1合金凝固组织、结晶织构及力学性能的影响。结果表明：直流磁场可以细化合金的初生相,减少α-Mg基体中Y元素的含量。随着磁场强度的增加,{1 1 2 0}面织构先加强后减弱,其转折点为0.9 T,{10 10}面织构逐渐增强;合金的铸态抗拉强度和伸长率总体上逐渐提高,当磁场强度为0.9 T时,合金的综合力学性能最好,其抗拉强度和伸长率较无磁场处理的试样相比分别提高了96.6%和61.1%。Solidified structure, crystal texture and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure under DC magnetic field（0-1.2 T） were studied. The results show that primary grain size and content of Y in matrix of the alloy decrease with DC magnetic field treatment. With the increase of magnetic field strength, the { 1 1 2 0 } plane texture rises firstly, then weakens, and the turning point is 0.9 T; while the { 1 0 1 0 } plane texture rises gradually. The strength and elongation of the alloy increase gradually. When the magnetic field strength is 0.9T, comprehensive mechanical properties of the alloy are the best. Tensile strength and elongation of the alloy are increased by up to 96.6% and 61.1%, respectively, compared with the sample without treatment.

关 键 词：直流磁场 Mg97Y2Cu1合金 长周期结构 结晶织构 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]