Strategies for enhancing the room-temperature stretch formability of magnesium alloy sheets: a review

Wang, Qinghang; Jiang, Bin; Chen, D.L.; Jin, Zhaoyang; Zhao, Lingyu; Yang, Qingshan; Huang, Guangjie; Pan, Fusheng

doi:10.1007/s10853-021-06067-x

Cited by 71 publications

(24 citation statements)

References 139 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Magnesium (Mg) and its alloys are lightweight materials that have the potential to decrease CO 2 emissions by improving the fuel efficiency of automobiles [1][2][3]. It is salient to note that the room temperature formability of Mg alloys is restricted due to the limited slip activity and preferential operation of twinning activity instead, which leads to premature failure [4]. Under higher temperatures, the <a> basal and <c + a> non-basal slip activities control the deformation.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Strain Rate Constitutive and Machine Learning Models for Flow Behavior of AZ31-0.5 Ca Mg Alloy during Hot Deformation

et al. 2022

View full text Add to dashboard Cite

In this study, isothermal compression tests of highly ductile AZ31-0.5 Ca Mg alloys were conducted at different strain rates (0.001–0.1 s−1) and temperatures (423–523 K) along with extruded direction. The flow stress characteristics were evaluated at elevated temperatures. In addition, a strain-dependent constitutive model based on the Arrhenius equation and machine learning (ML) were constructed to evaluate the stress–strain flow behavior. To build the ML model, experimental data containing temperature, strain, and strain rate were used to train various ML algorithms. The results show that under lower temperatures and higher strain rates, the curves exhibited strain hardening, which is due to the higher activation energy, while when increasing the temperature at a fixed strain rate, the strain hardening decreased and curves were divided into two regimes. In the first regime, a slight increase in strain hardening occurred, while in the second regime, dynamic recrystallization and dynamic recovery controlled the deformation mechanism. Our ML results demonstrate that the ML model outperformed the strain-dependent constitutive model.

show abstract

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Strain Rate Constitutive and Machine Learning Models for Flow Behavior of AZ31-0.5 Ca Mg Alloy during Hot Deformation

et al. 2022

View full text Add to dashboard Cite

show abstract

“…3,10 Meanwhile, rolled Mg sheets tend to exhibit strong texture, serious edge cracks and lower plasticity, which limit more widespread industrial applications. 11 Therefore, the research and development of low-cost, high-efficiency forming technology to produce high-performance Mg alloy is the focus in recent years.…”

Section: Introductionmentioning

confidence: 99%

“…17 However, ECAP is facing many challenges in the process of achieving mass production. 11,18 On the other hand, the accumulative rolling bonding (ARB) process as SPD method is applied to roll two equal sized metal sheets repeatedly, accumulated ultra-high strain could realize the continuous preparation of ultra-fine-grained thin sheets. 19,20 Most of ARB was employed to refine the grains during Mg alloy rolling.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, pack rolling is one simple and useful method of rolling. 11 Pack-rolling had been conducted on a preform made of a hot-worked ingot plate at temperatures within the upper region of the α + γ phase field. 15 Wu T et al 12 selected Al alloy as a cover to pack ZE20, and the results showed that ZE20 sheets exhibited a fine recrystallized microstructure, good ductility, and weak texture.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of single-pass large-strain tube pack-rolling on forming AZ61 alloy strip

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

In this paper, a novel manufacturing strategy named as tube pack-rolling (TPR) was proposed. In the process, Mg-6Al-1Zn-0.3Mn (wt%) (AZ61) bar was packed by stainless-steel tube to be rolled at elevated temperature. In order to compare the advantage of TPR, AZ61 bar was also rolled without stainless-steel tube which is named naked-rolling (NR). The stainless-steel was picked as the pack material because of its high strength and hardness which can completely restrain the deformation of magnesium alloy. Numeral simulations were employed to analyze the strip shape and formability. The optimized parameters of contour control are discussed. Tensile tests at room temperature show that specimen rolled by TPR at 673 K exhibit good comprehensive mechanical properties, and the yield strength and ultimate tensile strength reached 213 MPa and 305 MPa with the elongation of 23.2%. The microstructure was investigated by optical microscopes (OM) and electron back scattered diffraction (EBSD). The AZ61 alloy strip rolled by TPR at 673 K exhibited homogenous almost fine dynamically recrystallized equiaxed grains (about 5 µm) with a weak texture. Meanwhile the microstructure evolution mechanism also shows the temperature has significant effect on TPR processing.

show abstract

“…The use of lightweight materials is a convenient way to reduce carbon dioxide emissions and increase fuel efficiency so that their use can be enhanced as a structural material in automobile and military industries. Magnesium (Mg) alloys are prospective lightweight (density~1.78 g/cm 3 ) materials and possess a high strength-to-weight ratio and high machinability [1][2][3]. However, these alloys are comprised of hexagonal close packed (HCP) crystal structures and have an inadequate c/a ratio [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Microstructure Features and Superplasticity of Extruded, Rolled and SPD-Processed Magnesium Alloys: A Short Review

Malik

Chaudry

Hamad

et al. 2021

Metals

View full text Add to dashboard Cite

In this study, an overview of microstructure features such as grain size, grain structure, texture and its impact on strain rate sensitivity, strain hardening index, activation energy and thermal stability for achieving superplasticity of Mg alloys are presented. The deformation behavior under different strain rates and temperatures was also elaborated. For high elongation to fracture grain boundary sliding, grain boundary diffusion is the dominant deformation mechanism. In contrast, for low-temperature and high strain rate superplasticity, grain boundary sliding and solute drag creep mechanism or viscous glide dislocation followed by GBS are the dominant deformations. In addition, the results of different studies were compared, and optimal strain rate and temperature were diagnosed for achieving excellent high strain rate superplasticity.

show abstract

Strategies for enhancing the room-temperature stretch formability of magnesium alloy sheets: a review

Cited by 71 publications

References 139 publications

A Comparative Study of Strain Rate Constitutive and Machine Learning Models for Flow Behavior of AZ31-0.5 Ca Mg Alloy during Hot Deformation

A Comparative Study of Strain Rate Constitutive and Machine Learning Models for Flow Behavior of AZ31-0.5 Ca Mg Alloy during Hot Deformation

Effect of single-pass large-strain tube pack-rolling on forming AZ61 alloy strip

Microstructure Features and Superplasticity of Extruded, Rolled and SPD-Processed Magnesium Alloys: A Short Review

Contact Info

Product

Resources

About