超塑性锌铝共晶合金成形工艺的研究  

Investigation of formation technology of superplastic Zn-Al eutectic alloy

作　　者：李定[1] 郝远[1] 

机构地区：[1]兰州理工大学材料科学与工程学院

出　　处：《兰州理工大学学报》2004年第2期30-31,共2页Journal of Lanzhou University of Technology

基　　金：甘肃省重大科技攻关项目(GX914 2936)

摘　　要：根据超塑性锌铝共晶合金的力学性能和超塑性变形特点的试验研究结果,分析制定了锌铝共晶合金塑料模成型镶件的成形工艺参数.发现在300℃及小于40MPa的成形温度和成形压力下,可获得形状符合要求的超塑成形模具镶块,同时其镶块具有较高的力学性能:HB100,σb>370MPa,σ0.2>300MPa.Based on the researches and experiment made before on the mechanical properties and deformation of superplastic Zn-Al eutectic alloy, its formation processing parameters are analyzed and investigated to produce plastics mould inserts. It is found that superplastic formation mould inserts meeting the shape requirements can be obtained when the formation temperature and pressure are 300 ℃ and less than 40 MPa, respectively. Meantime, the inserts have better mechanical properties: HB 100, σ _b>370 MPa, ( σ _(0.2)>200 MPa.)

关 键 词：超塑性合金 锌铝共晶合金 力学性能 模具成形 变形应力 挤压成形 

分 类 号：TG135.3[一般工业技术—材料科学与工程] TG376[金属学及工艺—合金]