Role of loading direction on compressive deformation behavior of extruded ZK60 alloy plate in a wide range of temperature

Dharmendra, C.; Rao, K.P.; Jain, Mukesh; Prasad, Y. V. R. K.

doi:10.1016/j.jallcom.2018.02.032

Cited by 14 publications

(18 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Magnesium (Mg) alloys have been widely applied as lightweight engineering materials due to their unique properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. As commercial Mg-Zn-based alloys, ZK60 (Mg–Zn–Zr) alloys [ 9 ] have attracted great interest from researchers due to their high strength [ 10 , 11 , 12 ]. The microstructure [ 13 , 14 ], mechanical properties [ 15 , 16 , 17 ], and biological applications [ 18 , 19 ] of ZK60 alloys have been studied widely in recent decades.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion of Cast Magnesium Alloy ZK60 in NaCl Solution

Peng

et al. 2020

Materials

View full text Add to dashboard Cite

In this work, the effects of the microstructure and phase constitution of cast magnesium alloy ZK60 (Mg-5.8Zn-0.57Zr, element concentration in wt.%) on the corrosion behavior in aqueous NaCl (0.1 mol dm−3) were investigated by weight-loss measurements, hydrogen evolution tests, and electrochemical techniques. The alloy was found to be composed of α-Mg matrix, with large second-phase particles of MgZn2 deposited along grain boundaries and a Zr-rich region in the central area of the grains. The large second-phase particles and the Zr-rich regions were more stable than the Mg matrix, resulting in a strong micro-galvanic effect. A filiform corrosion was found. It originated from the second-phase particles in the grain boundary regions in the early corrosion period. The filaments gradually occupied most areas of the alloy surface, and the general corrosion rate decreased significantly. Corrosion pits were developed under filaments. The pit growth rate decreased over time; however, it was about eight times larger than the general corrosion rate. A schematic model is presented to illustrate the corrosion mechanism.

show abstract

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion of Cast Magnesium Alloy ZK60 in NaCl Solution

Peng

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…Two distinct plastic deformation mechanisms are observed in magnesium alloys: slipping and twinning . Basal, prismatic, and pyramidal systems are recognized as the major slipping modes of deformation when loading is applied such that it causes contraction along the c‐axis . Loading that causes extension along the c‐axis activates twinning deformation.…”

Section: Introductionmentioning

confidence: 99%

“…11,28,29 Basal, prismatic, and pyramidal systems are recognized as the major slipping modes of deformation when loading is applied such that it causes contraction along the c-axis. 10,[30][31][32] Loading that causes extension along the c-axis activates twinning deformation. If a specimen is machined along the working direction, the application of cyclic loading in the longitudinal direction activates slipping, twinning, and detwinning.…”

Section: Introductionmentioning

confidence: 99%

Multiaxial fatigue of extruded ZK60 magnesium alloy

Albinmousa

Adinoyi

Merah

2019

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Multiaxial monotonic and cyclic behaviors of ZK60‐T5 magnesium extrusion are investigated. Strain‐controlled tests were performed at standard laboratory condition with fully reversed straining. Twinning‐detwinning deformation plays an important role in the cyclic axial behavior for tests that were performed under strain amplitudes higher than 0.4%. However, the hysteresis loop for the 0.4% was found symmetric and no sign of twinning‐detwinning deformation was observed. On the contrary, the cyclic shear behavior was found to be similar to conventional alloys and no significant asymmetric or twinning‐detwinning deformations were observed. The multiaxial fatigue tests suggest that multiaxiality and nonproportionality are not detrimental to fatigue life. Three multiaxial fatigue damage models were used: Smith‐Watson‐Topper, Fatemi‐Socie, and Jahed‐Varvani. While Fatemi‐Socie and Jahed‐Varvani models show comparable estimation, Smith‐Watson‐Topper overestimates shear and nonproportional lives.

show abstract

“…The aim of the present investigation is to establish a correlation between the dynamic recrystallization (DRX) mechanisms exhibited in the various domains of processing maps [24] for extruded ZK60A-T5 alloy plate specimens, with the evolution of texture and anisotropy of deformation. To serve as a ready reference for correlation, a brief summary of the results on processing maps published earlier [24] for ZK60 plate will be recalled first, which will be followed by the texture characterization of deformed specimens.…”

Section: Introductionmentioning

confidence: 99%

Texture Evolution and Anisotropy of Plastic Flow in Hot Compression of Extruded ZK60-T5 Magnesium Alloy Plate

Dharmendra

Jain

Prasad

et al. 2019

Metals

Self Cite

View full text Add to dashboard Cite

The texture evolution during hot compression of extruded ZK60A-T5 magnesium alloy plate loaded along the extrusion direction (ED) and the normal direction (ND) has been examined with the help of pole figures obtained on specimens deformed in the ranges of 200 °C to 500 °C and 0.0003 s−1 to 10 s−1. The results are interpreted in terms of the operating slip systems and mechanisms identified based on processing maps developed for the above two initial specimen orientations. The processing map for the initial ED orientation exhibited three domains. In Domains 1 and 3, first-order pyramidal slip {10 1 ¯ l} <11 2 ¯ 0> occurs, while in Domain 2, second-order pyramidal slip {11 2 ¯ 2} <11 2 ¯ 3> occurs. The pole figures obtained on specimens deformed in Domains 1 and 3 are strikingly similar, indicating that the operating slip system controls the texture evolution. Compression in Domains 1 and 3 nearly randomizes the intense basal texture in the as-received specimens, while a new texture is generated in Domain 2 with basal poles at 45° to ND or transverse direction (TD). This new texture will promote basal slip when loaded in a transverse direction. When loaded in the normal direction (ND), the processing map exhibited four domains. In Domains 1 and 4, {10 1 ¯ l} <11 2 ¯ 3> slip occurs, while {11 2 ¯ 2} <11 2 ¯ 3> slip occurs in Domains 2 and 3. The pole figures obtained from specimens deformed in Domains 1 and 4 have similar features, while those deformed in Domains 2 and 3 exhibited similar features to one another, confirming that the operating slip systems control the texture development since they are the same in each pair. The compression along ND produces strong basal textures with the basal planes normal to the ED. The texture gets intensified with increased temperature of deformation and causes strong anisotropy in mechanical properties.

show abstract

Role of loading direction on compressive deformation behavior of extruded ZK60 alloy plate in a wide range of temperature

Cited by 14 publications

References 26 publications

Microstructure and Corrosion of Cast Magnesium Alloy ZK60 in NaCl Solution

Microstructure and Corrosion of Cast Magnesium Alloy ZK60 in NaCl Solution

Multiaxial fatigue of extruded ZK60 magnesium alloy

Texture Evolution and Anisotropy of Plastic Flow in Hot Compression of Extruded ZK60-T5 Magnesium Alloy Plate

Contact Info

Product

Resources

About