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http://dx.doi.org/10.3740/MRSK.2002.12.9.701

Effects of Grain Size on High Temperature Deformation Behavior of Sc added Al-Mg Alloy  

Woo, K.D. (Division of Advanced Materials Engineering & the RICT, Engineering Research Institute, Chonbuk National University)
Kim, S.W. (Division of Advanced Materials Engineering & the RICT, Engineering Research Institute, Chonbuk National University)
Kim, H.S. (Division of Advanced Materials Engineering & the RICT, Engineering Research Institute, Chonbuk National University)
Yang, C.H. (Division of Advanced Materials Engineering & the RICT, Engineering Research Institute, Chonbuk National University)
Park, H.C. (Division of Advanced Materials Engineering & the RICT, Engineering Research Institute, Chonbuk National University)
MIURA, Y. (Department of Materials Science and Engineering Research Institute, Chonbuk National University)
Park, K.T. (Department of Matallurgical Engineering, Hanbat National University)
Publication Information
Korean Journal of Materials Research / v.12, no.9, 2002 , pp. 701-705 More about this Journal
Abstract
High temperature tensile test has been performed at $450^{\circ}C$ at different strain rate with various grain size due to different reduction rate of Al-4wt%Mg-0.4wt%Sc alloy which is known to be one of useful superplastic alloys. The grain size of Al-4wt%Mg-0.4wt%Sc alloy is $67~100\mu\textrm{m}$ which is courser than that of the alloy which is commonly used as the superplastic material. The total elongation of the Al-4wt%Mg-0.4wt%Sc alloy is strongly dependent on the average grain size, and is a linear function of the inverse average grain size for the present alloy.
Keywords
Grain size; Strain rate; Superplasticity; Al-Mg-Sc alloy;
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