1420Al-Li合金超塑特性及微成形  

Superplastic Characteristics and Microforming of 1420Al-Li Alloy

作　　者：张凯锋[1] 王长丽[1] 于彦东[1] 

机构地区：[1]哈尔滨工业大学金属精密热加工国家重点实验室,黑龙江哈尔滨150001

出　　处：《金属成形工艺》2003年第1期11-14,共4页Metal Forming Technology

摘　　要：采用最大载荷法研究了 14 2 0Al Li合金的超塑特性 ,根据试验获得的超塑特性参数 ,采用两种形式的模具对 14 2 0Al Li合金的微成形性进行了研究。分析了成形压力、保压时间对微成形的影响 ,采用扫描电镜和金相显微镜分析了成形件的微观形貌 ,更好地理解了材料在微成形时的行为。In this paper, maximum load method was used to study superplastic character of 1420Al Li alloy. According to superplastic parameters obtained, microformability of 1420Al Li alloy was studied by using two kinds of dies. Effect of stress and dwell time on the microforming was analyzed in this paper, and surface topography of formed specimens were analyzed by SEM and metallographic microscope, which help to well understand microforming behavior of the selected material.

关 键 词：超塑性 微成形 1420AL-LI合金 铝合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG306[金属学及工艺—金属材料]