Paper Title:
Effect of Internal Pressure Path on Wall Thickness of AZ91D Pipe with Variable Cross-Section
  Abstract

There are many advantages of magnesium alloy such as light mass, nonrattling and electromagnetic interference shield. Yet, its ductility was poor at room temperature and plastic forming was difficulty due to its close-packed hexagonal structure. In this paper, the superplasticity of magnesium alloy AZ91D was explored and the relationship between flow stress and true strain were achieved at different temperature by tensile tests. It was found that the flow stress of AZ91D as cast was less than 20MPa at 340-450°Cand superplastic deformation could be used to manufacture magnesium alloy parts. Utilized superplastic air bulking mold, AZ91D seamless pipes with variable cross-section were manufactured successfully based on process parameters being optimized. Moreover, the relationship between loading path of internal pressure and wall thickness was analyzed also.

  Info
Periodical
Advanced Materials Research (Volumes 160-162)
Edited by
Guojun Zhang and Jessica Xu
Pages
1161-1164
DOI
10.4028/www.scientific.net/AMR.160-162.1161
Citation
J. Q. Guo, Y. S. Yang, F. X. Chen, X. K. Li, "Effect of Internal Pressure Path on Wall Thickness of AZ91D Pipe with Variable Cross-Section", Advanced Materials Research, Vols. 160-162, pp. 1161-1164, 2011
Online since
November 2010
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