Effect of Al-5Ti-1B Addition on Solidification Microstructure and Hot Deformation Behavior of DC-Cast Al-Zn-Mg-Cu Alloy

• Autorzy: Lee Junho , Seo Namhyuk , Lee Sang-Hwa , Euh Kwangjun , Kang Singon , Son Seung Bae , Lee Seok-Jae , Jung Jae-Gil

Identyfikatory

DOI

10.24425/amm.2024.147803

• Języki publikacji: EN

Abstrakty

EN

This study investigated the effect of adding Al-5Ti-1B grain refiner on the solidification microstructure and hot deformation behavior of direct-chill (DC) cast Al-Zn-Mg-Cu alloys. The grain refiner significantly decreased the grain size and modified the morphology. Fine-grained (FG) alloys with grain refiners exhibit coarse secondary phases with a reduced number density compared to coarse-grained (CG) alloys without grain refiners. Dynamic recrystallization (DRX) was enhanced at higher compression temperatures and lower strain rates in the CG and FG alloys. Both particle stimulated nucleation (PSN) and continuous dynamic recrystallization (CDRX) are enhanced in the FG alloys, resulting in decreased peak stress values (indicating DRX onset) at 450°C. The peak stress of the FG alloys was higher at 300-400°C than that of the CG alloys because of grain refinement hardening over softening by enhanced DRX.

Słowa kluczowe

EN

Al-Zn-Mg-Cu alloy; microstructure; twinned dendrite; hot deformation; dynamic recrystallization

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 1
• Strony: 145--149
• Opis fizyczny: Bibliogr. 41 poz., fot., rys.

Twórcy

autor

Lee Junho

• Jeonbuk National University, Division of Advanced Materials Engineering, Jeonju 54896, Republic of Korea

• https://orcid.org/0000-0001-8251-0925

autor

Seo Namhyuk

• Jeonbuk National University, Division of Advanced Materials Engineering, Jeonju 54896, Republic of Korea

• https://orcid.org/0000-0002-1015-1430

autor

Lee Sang-Hwa

• Korea Institute of Materials Science, Advanced Metals Division, Changwon 51508, Republic of Korea

• https://orcid.org/0009-0003-1713-1373

autor

Euh Kwangjun

• Korea Institute of Materials Science, Advanced Metals Division, Changwon 51508, Republic of Korea

• https://orcid.org/0000-0001-6717-3457

autor

Kang Singon

• Dong-A University, Department of Materials Science and Engineering, Busan 49315, Republic of Korea

• https://orcid.org/0000-0002-5143-0268

autor

Son Seung Bae

• Jeonbuk National University, Division of Advanced Materials Engineering, Jeonju 54896, Republic of Korea
• Jeonbuk National University, Research Center for Advanced Materials Development, Jeonju 54896, Republic of Korea

• https://orcid.org/0000-0003-0712-026X

autor

Lee Seok-Jae

• Jeonbuk National University, Division of Advanced Materials Engineering, Jeonju 54896, Republic of Korea
• Jeonbuk National University, Research Center for Advanced Materials Development, Jeonju 54896, Republic of Korea

• https://orcid.org/0000-0003-2463-8706

autor

Jung Jae-Gil

• Jeonbuk National University, Division of Advanced Materials Engineering, Jeonju 54896, Republic of Korea
• Jeonbuk National University, Research Center for Advanced Materials Development, Jeonju 54896, Republic of Korea

• https://orcid.org/0000-0002-4439-4086

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Uwagi

This work was supported by the Technology Innovation Program (20020283) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea). We thank the Center for University-wide Research Facilities (CURF) at Jeonbuk National University for assistance with the experiment.