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Preface
Thermomechanical Testing and Precipitation Modelling of Al-Mg-Si Alloys for Hot Forming Applications
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Microstructure Evolution of Twin-Roll Cast and Hot-Rolled WZ73 Alloy during the Finishing Heat-Treatment
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Anisotropic Mechanical Property-Induced Ductilization (AMID) – A New Mechanism to Simultaneously Improve the Strength and Ductility of Multiphase Alloys
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Development of Non-Equimolar CoCrCuFeNi High Entropy Alloys for Aerospace Brazing
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Effect of Heat Treatment and Rolling Process on Microstructure and Deformation Behavior in Al-Si Alloy
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Effect of Subgrain Boundary Distributions on Extra-Hardening of SPD-Processed Al-3%Mg Alloy
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Creep Strength of AlCoCrFeNi High-Entropy Alloy Fabricated by Spark Plasma Sintering
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Anisotropic Mechanical Property-Induced Ductilization (AMID) – A New Mechanism to Simultaneously Improve the Strength and Ductility of Multiphase Alloys

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Abstract:

We recently proposed a new mechanism to simultaneously improve the strength and ductility of multiphase alloys, named “Anisotropic mechanical property-induced ductilization (AMID)”. In this paper, the variations in tensile deformation behavior of Mg/LPSO extruded alloys depending on the volume fraction of the LPSO phase were examined, to deepen the understanding on AMID. As expected, the work-hardening rate of the Mg/LPSO two-phase extruded alloy increased as increasing in the volume fraction of LPSO phase. This demonstrates the validity of the AMID mechanism. However, the increase in the volume fraction of the LPSO phase decreased the elongation, even though the work-hardening rate was increased in them. The present study revealed that an appropriate amount of Mg grains is necessary to obtain the effect of AMID in improving the uniform elongation of the alloy, by the suppressing the development of microcracks formed in the LPSO phase grains into macroscopic fracture.

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Periodical:

Materials Science Forum (Volume 1175)

Pages:

13-18

DOI:

https://doi.org/10.4028/p-b0cjRZ

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Online since:

January 2026

Authors:

Koji Hagihara*, Toko Tokunaga, Michiaki Yamasaki, Mika Sugita

Keywords:

AMID, Elongation, LPSO Phase, Mg Alloy, Work-Hardening

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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