• CN:11-2187/TH
  • ISSN:0577-6686

›› 2004, Vol. 40 ›› Issue (5): 82-86.

• 论文 • 上一篇    下一篇

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Zn-Al22合金超塑微成形

张凯锋;王长丽   

  1. 哈尔滨工业大学材料科学与工程系
  • 发布日期:2004-05-15

MICROFORMING OF SUPERPLASTIC Zn-Al22 ALLOY

Zhang Kaifeng;Wang Changli   

  1. School of Materials Science and Engineering,Harbin Institute of Technology
  • Published:2004-05-15

摘要: 采用超塑成形工艺研究了细晶超塑Zn-Al22合金的微成形。采用表面带有微槽和微孔两种形式的不锈钢模具,对所选材料进行了微成形性试验,并利用提出的评价方法对其成形进行评价。微挤压试验证明了材料的微成形性。分析了润滑、压力及模具结构对成形的影响。采用SEM对成形件微观形貌进行了分析。

关键词: Zn-Al22合金, 超塑性, 挤压, 微成形

Abstract: Research on microforming of fine grained superplastic Zn-Al22 alloy is carried out by means of superplastic forming. With the selected material, microformability tests are carried out by using two kinds of stainless steel dies:one with micro-cavity, the other with micro-channel. The results are evaluated with the developed evaluation method. Haracteristics of micro-formabi-lity of the material are clarified with micro-extrusion tests. Effec-ts of lubrication, press and die structure on forming are analy-sed. SEM is used to analyse surface topograph of the formed specimens.

Key words: Extrusion, Micro-forming, Superplasticity, Zn-Al22 alloy

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