Effects of initial texture on deformation behavior during cold rolling and static recrystallization during subsequent annealing of AZ31 alloy

Lee, Sang Won; Han, Gukin; Jun, Tea‐Sung; Park, Sung Hyuk

doi:10.1016/j.jmst.2020.04.074

Cited by 38 publications

(5 citation statements)

References 28 publications

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“…It has to be considered that the grain size of the S1_ND is slightly lower than that of the other alloys [27]. Generally, with further deformation, an increase in the basal peak intensity is expected, and has been seen in pure Mg [35], AZ31 [30], and other Mg-alloys [35][36][37]. For most of the alloys in this study, this texture evolution was also observed.…”

Section: Texture Development-nd Samplessupporting

confidence: 51%

“…Although the basal peak intensities after the reorientation increased to approximately the as-RX values, no further increase was seen during the ND cold rolling. The refinement of the microstructure during twinning probably allows more uniform deformation with further rolling, and the basal-type texture intensity does not increase further [30].…”

Section: Texture Development-td-samplesmentioning

confidence: 99%

“…The lack of shear bands was attributed to the activation of both prismatic <a> slip and tension twinning. Recently, Lee et al [30] showed large shear bands for AZ31, which they attributed to double twins occurring during cold rolling of a sample with a basal-type texture, whereas, in a sample of the same alloy with an off-basal texture, it was mainly the tension twins that were active, leading to very fine micro-shear bands and, therefore, a finer microstructure.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Lean Alloyed Al and Ca on the Texture Development of Cold Rolled Mg Sheets

Delis

Berners

Korte‐Kerzel

et al. 2023

Metals

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Lean alloyed Mg-Al-Ca alloys reveal weakened basal-type texture intensities and increased room-temperature ductility when compared to pure Mg. Since the combined effects of the alloying elements Al and Ca on texture evolution are not yet fully understood, in this study, two binary and seven ternary Mg-Al-Ca alloys (ranging between 0–2 wt.-% Al and 0–0.5 wt.-% Ca) were subjected to cold rolling with texture measurement after each rolling step. These measurements showed that the basal-type texture of Mg is weakened by the addition of Ca, while the addition of Al leads to stronger basal-type textures compared to the samples containing Ca. The joint effect of Al and Ca can, for specific alloy compositions, lead to a steady-state basal texture intensity, which does not become stronger with further rolling. We expect that the solubility limit of Ca in Mg affects this behaviour. For comparison, mechanical properties were obtained by compression testing, showing high degrees of deformation, of 15–25%.

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Section: Texture Development-nd Samplessupporting

confidence: 51%

Section: Texture Development-td-samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Lean Alloyed Al and Ca on the Texture Development of Cold Rolled Mg Sheets

Delis

Berners

Korte‐Kerzel

et al. 2023

Metals

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“…Meanwhile, the recrystallization behavior of Mg alloys is also highly dependent on the degree of strain [13,14]. In particular, the activation of tension twins (TTWs) and basal ships is much easier than that of compression twins (CTWs), double twins (DTWs), and non-basal slips during the early stage of plastic deformation [15][16][17]. With increasing strain, the volume fraction of CTWs and DTWs increases while that of TTWs decreases.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Texture Evolution of Hot-Rolled Mg-3Gd Alloy during Recrystallization

Han

Wang

Luo

et al. 2023

Metals

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An Mg-3Gd (wt.%) sample with gradient rolling strains (ε = 0–0.55) was prepared using a wedge-shaped plate after one-pass hot rolling, allowing a high-throughput characterization of microstructure and texture over a wide strain range within one hot-rolled plate. The microstructure and texture evolutions were characterized as a function of rolling strain for the as-hot-rolled sample and as a function of annealing temperature for the subsequently annealed samples. The deformed microstructure showed a gradual change with increasing rolling strain, i.e., from a deformation twins-dominant structure in the low strain range of 0–0.20, to a shear bands-dominant structure in the higher strain range of 0.20–0.55. The recrystallization behavior during annealing showed a clear correlation between the recrystallization nucleation site and the deformed microstructure. However, a weak recrystallization texture with non-basal texture components was formed over almost the entire strain range. This work demonstrates a high-throughput experimental strategy using a wedge-shaped sample to investigate the effect of various processing parameters, such as strain and annealing temperature, on the evolution of microstructure, texture, and mechanical properties, which could accelerate the optimization of processing parameters and microstructural design.

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“…Hence, tremendous efforts have been devoted to overcome these issues, which has consequently hampered the cost-effective production of Mg sheets. During the last decade, grain refinement has attracted more attention for enhancing the strength and ductility of Mg alloys in view of the Hall-Petch relationship (σ y = σ 0 + kd n ) [9,10]. In addition, many strategies were developed to enhance the mechanical performance of Mg by weaken the strong basal texture (e.g., alloying, severe plastic deformation, secondary processing) [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Microstructure, Crystallographic Texture and Mechanical Behavior of Hot-Rolled Pure Mg and Mg-2Al-1Zn-1Ca Alloy

2022

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In this study, the microstructure, crystallographic texture and the mechanical performance of hot-rolled pure Mg and Mg-2Al-1Zn-1Ca (herein inferred as AZX211) were thoroughly investigated. The results showed that the designed AZX211 alloy exhibited an exceptional strength/ductility synergy where an almost 40% increase in ductility was received for AZX211. The microstructural characterization revealed the grain refinement in the AZX211, where the grain size was reduced by more than 50% (24.5 µm, 10 µm for the pure Mg and the AZX211, respectively). Moreover, a discernible number of precipitates were dispersed in the AZX211, which were confirmed to be (Mg, Al)2Ca. The pure Mg showed a conventional strong basal texture while a significantly weakened split basal texture was received for the AZX211. The fraction of basal-oriented grains was 21% for the pure Mg and 5% for the AZX211. The significant texture weakening for the AZX211 can be attributed to the precipitation and co-segregation that triggered the preferential evolution of the non-basal grains while impeding the growth of the basal grains. This was also confirmed by the crystal orientation and the pseudo-rocking curves. The higher ductility of the AZX211 was explained based on the texture softening and Schmid factor for the basal and non-basal slip systems.

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Effects of initial texture on deformation behavior during cold rolling and static recrystallization during subsequent annealing of AZ31 alloy

Cited by 38 publications

References 28 publications

Effect of Lean Alloyed Al and Ca on the Texture Development of Cold Rolled Mg Sheets

Effect of Lean Alloyed Al and Ca on the Texture Development of Cold Rolled Mg Sheets

Microstructure and Texture Evolution of Hot-Rolled Mg-3Gd Alloy during Recrystallization

Investigating the Microstructure, Crystallographic Texture and Mechanical Behavior of Hot-Rolled Pure Mg and Mg-2Al-1Zn-1Ca Alloy

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