Effect of Deformation Temperature on Microstructure and Mechanical Properties of AZ31 Mg Alloy Processed by Differential-Speed Rolling

Kaseem, Mosab; Chung, Bong Kwon; Yang, Haozhe; Hamad, Kotiba; Ko, Young Gun

doi:10.1016/j.jmst.2014.08.016

Cited by 70 publications

(18 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, an inadequate number of slip planes at room temperature, results in poor workability, formability, and processing difficulty at room temperatures. Furthermore, the machining temperature of magnesium alloy is usually higher than 200 °C [5,6], which causes grain growth and a lower strength, due to the large grains. Therefore, it is important to improve the plasticity of magnesium alloys and their comprehensive properties [7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

The Effect of ECAP Temperature on the Microstructure and Properties of a Rolled Rare Earth Magnesium Alloy

Tan

et al. 2019

Materials

View full text Add to dashboard Cite

Deformation of an as-rolled rare earth Mg-2Y-0.6Nd-0.6Zr alloy, at different temperatures, was carried out along the BC (90° anticlockwise rotation of the samples after each ECAP pass) route by equal channel angular pressing (ECAP). The effects of the deformation temperature and the predeformation on the microstructure of the magnesium alloy were determined by the microstructure examination. The slip systems and texture change of the Mg-2Y-0.6Nd-0.6Zr alloy were investigated by X-ray diffraction (XRD) and electron backscattered diffraction (EBSD), after equal channel angular deformation. The results showed that after seven passes of rolling, the grain size in the Mg-2Y-0.6Nd-0.6Zr alloy was refined to approximately 22 µm and the slip occurred mainly by a cylindrical slip and a pyramidal slip. After one pass of ECAP at 340 °C, the internal average grain size was significantly reduced to 11 µm, the cylindrical diffraction intensity clearly weakened, and the pyramidal diffraction intensity increased. EBSD pole figure analysis revealed that the base texture of the rolled Mg-2Y-0.6Nd-0.6Zr alloy weakened from 24.31 to 11.34 after ECAP. The mechanical properties indicated that the tensile strength and elongation of the rolled Mg-2Y-0.6Nd-0.6Zr alloy reached maximum values, when the deformation temperature was 340 °C.

show abstract

Section: Introductionmentioning

confidence: 99%

The Effect of ECAP Temperature on the Microstructure and Properties of a Rolled Rare Earth Magnesium Alloy

Tan

et al. 2019

Materials

View full text Add to dashboard Cite

show abstract

“…Concerns over the environmental impacts of fossil fuels have led to the development of aggressive fuel efficiency targets. An effective way to increase fuel efficiency is to decrease vehicle weight by utilizing lightweight metallic materials like magnesium (Mg) and its alloys, which have superb specific strength, good cast-ability, and excellent damping capacity [1][2][3]. To date, the use of Mg for automotive applications has mainly been limited to trimming and nonstructural members.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, texture and mechanical behavior characterization of hot forged cast ZK60 magnesium alloy

Karparvarfard

Shaha

Behravesh

et al. 2017

Journal of Materials Science & Technology

View full text Add to dashboard Cite

Uniaxial tension and compression tests were conducted to investigate the quasi-static performance of ZK60 Mg alloy in cast, followed by forging at optimum temperature of 450 ºC and a ram speed of 39 mm min -1 condition. Microstructure and texture analysis showed that the as-cast alloy exhibited a dendritic structure with casting porosity and random texture. In contrast, the forged alloy exhibited a refined grain structure with a significant reduction in casting porosity, while the texture changed to sharp basal texture. Measured mechanical properties of the forged alloy showed that the strength did not change, however, the ductility improved by 75%.The analysis of the fracture surface of the forged alloy under tension revealed a ductile fractureThe final publication is available at Elsevier via http://dx.

show abstract

“…Wrought magnesium alloy had higher mechanical properties than the conventional cast magnesium alloy, so it would be the main pattern of magnesium alloys when applied as structural materials [3,4]. However, because of the low ductility and poor workability of magnesium alloys at room temperature, the alloys were generally rolled or extruded at temperatures higher than 200 • C [5,6], which directly led to the big grain size and relatively poor mechanical proprieties, which greatly restricted the industry application of magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling

Yuan

Guo

Sun

et al. 2019

Metals

View full text Add to dashboard Cite

Mechanical properties usually take precedence for wrought magnesium alloy when it would be used as a structure material. This paper proposed an approach that achieved high strength in AZ91 Mg alloy. The main procedure combined solution heat treatment, equal channel angular pressing (ECAP), and the subsequent low temperature rolling. After solution heat treatment and ECAP, the alloy had fine grains and excellent ductility, which benefited the following rolling at low temperature. By the following rolling (at 150 °C), the strength was further increased to ~432 MPa with a moderate ductility. This approach was proved effective in refining the grains and accumulating dislocations. The ultrahigh strength was attributed to the high density of dislocations and fine structure. The uniformly distributed fine precipitates also supplied precipitate hardening. Recrystallization that happened during rolling and annealing was the main reason for the moderate ductility.

show abstract

Effect of Deformation Temperature on Microstructure and Mechanical Properties of AZ31 Mg Alloy Processed by Differential-Speed Rolling

Cited by 70 publications

References 33 publications

The Effect of ECAP Temperature on the Microstructure and Properties of a Rolled Rare Earth Magnesium Alloy

The Effect of ECAP Temperature on the Microstructure and Properties of a Rolled Rare Earth Magnesium Alloy

Microstructure, texture and mechanical behavior characterization of hot forged cast ZK60 magnesium alloy

High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling

Contact Info

Product

Resources

About