Multiple-twinning induced recrystallization and texture optimization in a differential-temperature-rolled AZ31B magnesium alloy with excellent ductility. Issue 5 (4th May 2022)

• Record Type: Journal Article
• Authors: Peng, Ruizhi; Xu, Chun; Li, Yu; Zhong, Shaoxiong; Cao, Xiang; Ding, Yafei
• Is Part Of: Materials research letters. Volume 10:Issue 5(2022)
• Page Start: 318
• Page End: 326
• Publication Date: 2022-05-04
• Subjects: Magnesium alloys -- microstructures -- twinning -- deformation mechanisms -- recrystallization; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2022.2050433
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : The effect of differential roller temperature (DTR) (low and high roller temperature difference: 60 and 180 K) on the microstructure evolution, deformation mechanism, and mechanical properties were investigated in a commercial AZ31B alloy sheet. Compared with the LDTR sample, a considerable shear strain ( 0.4) in the HDTR sample led to a multiple-twinning system, especially the formation of contraction twins (CTWs) and double twins (DTWs). After annealing, the HDTR-annealing (HDTR-A) sample achieved an excellent ductility (∼33.6%) as a result of a higher recrystallization fraction (∼71.75%) and more optimized texture component (max basal texture intensity decrease from 36.13–8.06). GRAPHICAL ABSTRACT: UF0001 IMPACT STATEMENT: A new method, differential temperature rolling, was used in AZ31B Mg alloy to induce multiple-twinning systems, which strongly influences the recrystallization mechanism and texture evolution, leading to a high ductility.