Cross-rolling induced texture randomization and structural evolution for improved plastic isotropy in Al-Mg alloys with high Mg content

被引：1

作者：

Shin, Young-Chul ^{[1
]}

Park, Young-Chul ^{[2
,3
]}

Hong, Je-Pyo ^{[2
,4
]}

Cheong, Jun Young ^{[5
]}

Kim, Kwang-Yuk ^{[6
]}

Shin, Byungsu ^{[3
]}

Jeong, Dae-Yong ^{[3
]}

Lee, Taejin ^{[7
]}

Kwak, Taeyang ^{[7
]}

Jung, Taek-Kyun ^{[2
]}

Cho, Chang-Hee ^{[2
,8
]}

Son, Kwangtae ^{[9
]}

机构：

[1] Korea Inst Ind Technol, Res Inst Adv Mfg & Mat Technol, Molding & Met Forming R&D Dept, Incheon 21999, South Korea

[2] RtoB Co Ltd, R&D Ctr, Incheon 21632, South Korea

[3] Inha Univ, Dept Mat Sci & Engn, Incheon 22212, South Korea

[4] Inha Univ, Dept Mech Engn, Incheon 22212, South Korea

[5] Univ Glasgow, James Watt Sch Engn, Glasgow G12 8 QQ, Scotland

[6] Inha Univ, Grad Sch Mfg Innovat, Incheon 21999, South Korea

[7] RUAN Co Ltd, Room 203,64 Gilju Ro, Bucheon Si, Gyeonggi Do, South Korea

[8] Northwestern Univ, Dept Mat Sci & Engn, 2220 Campus Dr, Evanston, IL 60208 USA

[9] Oregon State Univ, Sch Mech Ind & Mfg Engn, Corvallis, OR 97331 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1008卷

关键词：

Al-Mg alloy; Plastic anisotropy; R-value; Texture evolution; Cross-rolling (CR) process; Electron backscattered diffraction (EBSD); Tensile test; SHEAR-BAND FORMATION; STORED ENERGY; ALUMINUM; SHEET; DEFORMATION; ANISOTROPY; MICROSTRUCTURE; ORIENTATION; PREDICTION; METALS;

D O I：

10.1016/j.jallcom.2024.176530

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Plastic anisotropy is a key factor that affects the formability and performance of Al-Mg alloys. In this study, the effects of Mg content and strain path shifting from unidirectional rolling (UDR) to cross rolling processes (CR) on plastic anisotropy in Al-Mg alloys were investigated. Al-6 and 9Mg alloys were heat-treated and rolled in two different ways: the first was a UDR process, and the other was a CR process at room temperature. The rolled specimens were analyzed by electron backscattered diffraction method and tensile test. High Mg content suppresses the formation of texture that strengthens the plastic anisotropy in both UDR and CR processes. CR significantly reduces the rolling texture area fraction, leading to greater texture randomness compared to UDR. CR promotes the formation of low-angle deformation bands, which low-angle bands appear to have a weaker impact on deformation resistance and may contribute to the reduced anisotropy in CR-processed materials. CR results in a more uniform distribution of stored energy. R-value which represents plastic anisotropy decreases by shifting from UDR to CR, and by increment of Mg content. Overall, this study demonstrates that CR is a promising approach for improving the formability and performance of Al-Mg alloys by effectively controlling plastic anisotropy.

引用

页数：13