Effect of pre-deformation on aging characteristics and mechanical properties of a Mg–Gd–Nd–Zr alloy

Zheng, K.Y.; Dong, Jie; Zeng, Xiaoqin; Ding, Wenjiang

doi:10.1016/j.msea.2008.01.067

Cited by 67 publications

(25 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, lattice defects via pre-deformation can promote the nucleation and suppress coarsening of precipitates [8,9,10,11,13,17]. Thus, precipitation characteristics could be related with the distribution of lattice defects.…”

Section: Discussionmentioning

confidence: 99%

“…Cold deformation is an effective way to tailor the precipitation behavior of Mg alloys [8,9,10,11,12,13]. It has been reported that the high density of dislocations generated by cold working accelerated aging kinetics and facilitated the nucleation of precipitates during the aging process, leading to a higher aging hardening response [9].…”

Section: Introductionmentioning

confidence: 99%

“…In previous studies, pre-cold deformation is usually carried out by pre-tension, pre-compression and pre-rolling [8,9,10,19,20,21]. Recently, it has been found that torsion deformation is somewhat superior for improving the mechanical properties of rod-shaped materials [22,23,24,25,26,27,28].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving Tensile and Compressive Properties of an Extruded AZ91 Rod by the Combined Use of Torsion Deformation and Aging Treatment

et al. 2017

View full text Add to dashboard Cite

In this study, AZ91 magnesium alloy rods were used to investigate the effects of torsion deformation on microstructure and subsequent aging behavior. Extruded AZ91 rod has a uniform microstructure and typical fiber texture. Torsion deformation can generate a gradient microstructure on the cross-section of the rod. After torsion, from the center to the edge in the cross-section of the rod, both stored dislocations and area fraction of {10-12} twins gradually increase, and the basal pole of the texture tends to rotate in the ED direction. Direct aging usually generates coarse discontinuous precipitates and fine continuous precipitates simultaneously. Both twin structures and dislocations via torsion deformation can be effective microstructures for the nucleation of continuous precipitates during subsequent aging. Thus, aging after torsion can promote continuous precipitation and generate gradient precipitation characteristics. Both aging treatment and torsion deformation can reduce yield asymmetry, and torsion deformation enhances the aging hardening effect by promoting continuous precipitation. Therefore, combined use of torsion deformation and aging treatment can effectively enhance the yield strength and almost eliminate the yield asymmetry of the present extruded AZ91 rod. Finally, the relevant mechanisms are discussed.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improving Tensile and Compressive Properties of an Extruded AZ91 Rod by the Combined Use of Torsion Deformation and Aging Treatment

et al. 2017

View full text Add to dashboard Cite

show abstract

“…After 4-8 h ageing treatment, the hardness of E þ300Rþ200A and Eþ400R þ200A increased sharply and then reached peak hardness after 28 h and 48 h, respectively. This accelerated agehardening for Eþ300Rþ200A sample is due to the fact that high density of dislocations accumulated in the Mg matrix of the sheet rolled at lower temperature facilitated the nucleation of main strengthening phase (b 0 phase) [17,19,20]. After reaching peak ageing, hardness of both Eþ300Rþ200A and Eþ400R þ200A deceased slightly until 1024 h, which indicated good thermal stability of the sheets.…”

Section: Methodsmentioning

confidence: 92%

“…6f. It can be seen that b 0 phase precipitated heterogeneously and apt to precipitate along defects produced by deformation process due to the semi-coherent relationship between the phase and a-Mg matrix [17,19,20]. Fig.…”

Section: Microstructurementioning

confidence: 91%

Microstructure and mechanical properties of Mg–Gd–Y–Zn–Zr alloy sheets processed by combined processes of extrusion, hot rolling and ageing

Zheng

et al. 2013

Materials Science and Engineering: A

View full text Add to dashboard Cite

Microstructural Characterization of Homogenised and Aged Mg‐Gd‐Nd Alloys

Khawaled

Bamberger

Katsman

2012

Magnesium Technology 2012

View full text Add to dashboard Cite

Effect of pre-deformation on aging characteristics and mechanical properties of a Mg–Gd–Nd–Zr alloy

Cited by 67 publications

References 14 publications

Improving Tensile and Compressive Properties of an Extruded AZ91 Rod by the Combined Use of Torsion Deformation and Aging Treatment

Improving Tensile and Compressive Properties of an Extruded AZ91 Rod by the Combined Use of Torsion Deformation and Aging Treatment

Microstructure and mechanical properties of Mg–Gd–Y–Zn–Zr alloy sheets processed by combined processes of extrusion, hot rolling and ageing

Microstructural Characterization of Homogenised and Aged Mg‐Gd‐Nd Alloys

Contact Info

Product

Resources

About