AZ31镁合金多次变形工艺及其在汽车轮毂上的应用  

Forming Technolgy for AZ31 Magnesium Alloy and It's Application in Automobile Hub

作　　者：曹亚强[1] 张治民 王强[1] 王智文[3] 

机构地区：[1]中北大学材料工程系,山西太原030051 [2]山西省集成精密成形工程技术研究中心,山西太原030051 [3]北京有色金属研究总院,北京100088

出　　处：《热加工工艺》2006年第9期57-60,共4页Hot Working Technology

摘　　要：研究了AZ31镁合金在一次变形和二次变形后的常温抗拉强度的变化规律。结果表明:一次变形以210℃变形强化效果最明显;二次变形可以提高AZ31镁合金的强度。在变形温度为240℃,变形程度达到1．79时,强度最高,可以达到390 MPa,此时复合强化效果最明显,比镦粗后强度提高了约157 MPa,比铸坯均匀化退火后的强度提高了近220 MPa。The variation law of AZ31 tensile strength at room temperature was studied alter the once deformation and twice deformation. The result indicates that the deformation effect of the once deformation is conspicuous at 210℃, the twice deformation can raise AZ31 strength. While the deformation temperature is 240℃,the deformation degree reach 1.79, the strength is highest which is 390 MPa, and complex strengthening effect is most conspicuous, the strengh is 157 MPa higher than the strength alter sinking strain and 220 MPa higher than homogenizing annealing of casting blank, elongation also has greater improvement than as-cast ingot.

关 键 词：AZ31镁合金 温变形 轮毂 抗拉强度 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG316[金属学及工艺—金属材料]