MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Materials Processing
Achieving Grain Refinement of Upsized Al–3Mg–0.2Sc (mass%) Round Rods Using Multi-Pass High-Pressure Sliding (MP-HPS)
Yongpeng TangYoichi TakizawaManabu YumotoYoshiharu OtagiriZenji Horita
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2020 Volume 61 Issue 7 Pages 1387-1389

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Abstract

In this study, the multi-pass high-pressure sliding (MP-HPS) process was applied for grain refinement of Al–3Mg–0.2Sc (mass%) rods with an upsized dimension of 16 mm in diameter. To achieve a homogeneous microstructure throughout the cross-section, the rod sample was rotated with 60° around the longitudinal axis (MP-HPS-R) for three times. A microstructure with an average grain size of 280 nm was developed around the center of the cross-section through the MP-HPS-R process. Superplasticity with total elongations of more than 400% was achieved in the 9 mm diameter range on the cross-section of the MP-HPS-R-processed rod.

 

This Paper was Originally Published in Japanese in J. JILM 70 (2020) 63–65.

Fig. 3 Hardness variation throughout cross section at center of rod sample after MP-HPS-R processing with sliding distance of 15 mm. Fullsize Image
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© 2020 The Japan Institute of Light Metals
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