Influence of high-pressure torsion on formation/destruction of nano-sized spinodal structures

Ali Alhamidi, Kaveh Edalati, Zenji Horita

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

The microstructures and hardness of Al - 30 mol.% Zn are investigated after processing by high-pressure torsion (HPT) for different numbers of revolutions, N = 1, 3, 10 or 25, as well as after post-HPT annealing at different temperatures, T = 373 K, 473 K, 573 K and 673 K. It was found that a work softening occurs by decreasing the grain size to the submicrometer level and increasing the fraction of high-angle boundaries. As a result of HPT processing, a complete decomposition of supersaturated solid solution of Zn in Al occurs and the spinodal structure is destroyed. This suggests that softening of the Al-Zn alloys after HPT is due to the decomposition of the supersaturated solid solution and destruction of spinodal decomposition. After post-HPT annealing, ultrafine-grained Al-Zn alloys show an unusual mechanical properties and its hardness increased to 187 HV. Microstructural analysis showed that the high hardness after post-HPT annealing is due to the formation of spinodal structures.

元の言語英語
ホスト出版物のタイトルProceedings of the 3rd International Conference on Materials and Metallurgical Engineering and Technology, ICOMMET 2017
ホスト出版物のサブタイトルAdvancing Innovation in Materials Science, Technology and Applications for Sustainable Future
編集者Mas Irfan P. Hidayat
出版者American Institute of Physics Inc.
ISBN(電子版)9780735416406
DOI
出版物ステータス出版済み - 4 3 2018
イベント3rd International Conference on Materials and Metallurgical Engineering and Technology: Advancing Innovation in Materials Science, Technology and Applications for Sustainable Future, ICOMMET 2017 - Surabaya, インドネシア
継続期間: 10 30 201710 31 2017

出版物シリーズ

名前AIP Conference Proceedings
1945
ISSN(印刷物)0094-243X
ISSN(電子版)1551-7616

その他

その他3rd International Conference on Materials and Metallurgical Engineering and Technology: Advancing Innovation in Materials Science, Technology and Applications for Sustainable Future, ICOMMET 2017
インドネシア
Surabaya
期間10/30/1710/31/17

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • これを引用

    Alhamidi, A., Edalati, K., & Horita, Z. (2018). Influence of high-pressure torsion on formation/destruction of nano-sized spinodal structures. : M. I. P. Hidayat (版), Proceedings of the 3rd International Conference on Materials and Metallurgical Engineering and Technology, ICOMMET 2017: Advancing Innovation in Materials Science, Technology and Applications for Sustainable Future [020061] (AIP Conference Proceedings; 巻数 1945). American Institute of Physics Inc.. https://doi.org/10.1063/1.5030283