The impact of homogenization treatment on microstructure microhardness and corrosion behavior of wrought AZ80 magnesium alloys in 3.5 wt% NaCl solution

Naik, Gajanan M.; Gote, Gopal; Narendranath, S.; Kumar, Sushil

doi:10.1088/2053-1591/aad31f

Cited by 19 publications

(9 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As it could be observed from Figures 6 and 9 as-received and homogenized (0P) Mg alloy has moderately large grain size approximately ~50.20 μm and ~50.70 μm for AZ80 and 58.69 μm, 59.82 μm for AZ91 alloy respectively. The increased average grain size of Mg alloy after homogenization treatment AZ80/91 Mg alloy at 673 K-24 h is due to the phenomenon of grain growth effect [8,17,18]. Further, it can be shown that after 2P and 4P ECAP volume fraction of grains increases compared to as-received and homogenized Mg alloy.…”

Section: Variation Of Grain Size With Two Different Die After 2 and 4mentioning

confidence: 89%

“…This process is repeated by using route R, where the samples were inverted from its initial position between two successive passes as shown in Figure 5(a). The processed samples after ECAP operation is shown in Figure 5(b) [7][8][9][10][11][12].…”

Section: Equal Channel Angular Extrusionmentioning

confidence: 99%

“…Specimens for microstructure inspection were prepared by mechanical polishing with silicon carbide abrasive papers (grades of 400, 800, 1000, 1200, 1500, 2000) followed by cloth polishing using diamond paste and kerosene for obtaining mirror finish surface and finally cleaned with acetone. Further, Etching was carried on the polished surface for approximately 3 to 5 s, in a solution of 4.2 g picric acid, 10 ml acetic acid, 10 ml distilled water and 70 ml ethanol for 3-5 s [8][9][10][11][12]. So that sample turns light brown and washed with running distilled water and dried.…”

Section: Optical Microscopementioning

confidence: 99%

See 2 more Smart Citations

Effect of ECAE Die Angle on Microstructure Mechanical Properties and Corrosion Behavior of AZ80/91 Magnesium Alloys

Naik¹,

Bandadka²,

Manjaiah³

et al. 2022

Magnesium Alloys Structure and Properties

View full text Add to dashboard Cite

Magnesium alloys have poor tensile strength, ductility and corrosion resistance properties associated with other engineering materials like aluminum alloys, steels and superalloys etc. Therefore, many researchers worked on equal channel angular pressing of magnesium alloys to improve the mechanical properties and corrosion resistance. In this work, the effect of channel angles on material properties was investigated during equal channel angular pressing of AZ80/91 magnesium alloy using processing route-R at 598 K processing temperature. Channel angles of 900 and 1100, common corner angle of 300 have been considered for the study. It has been revealed that the channel angle has a significant influence on deformation homogeneity, microhardness, ultimate tensile strength, ductility, and corrosion behavior of AZ80/91 magnesium alloys. Specifically, AZ80/91 Mg alloys processed through 900 channel angle i.e. die A is considered as optimal die parameter to improve above-said material properties. Investigation showing concerning as-received AZ80 and AZ91 Mg alloy indicates 11%, 14% improvement of UTS and 69%, 59% enhancement in ductility after processing through 4P through die A (90°) at 598 K respectively. Also, the corrosion rate reduces to 97% and 99% after processing the sample with 4P-ECAP die A (90°) at the same processing temperature for AZ80 and AZ91 Mg alloys respectively. This is mainly due to grain refinement and distribution of Mg17Al12 secondary phase during ECAP.

show abstract

Section: Variation Of Grain Size With Two Different Die After 2 and 4mentioning

confidence: 89%

Section: Equal Channel Angular Extrusionmentioning

confidence: 99%

Section: Optical Microscopementioning

confidence: 99%

See 1 more Smart Citation

Effect of ECAE Die Angle on Microstructure Mechanical Properties and Corrosion Behavior of AZ80/91 Magnesium Alloys

Naik¹,

Bandadka²,

Manjaiah³

et al. 2022

Magnesium Alloys Structure and Properties

View full text Add to dashboard Cite

show abstract

“…From accessible literature there is no much focus on the technique to improve the bio-mechanical integrity of Mg alloys. Our previous studies improved the mechanical properties and corrosion behaviour of Mg alloys by ECAP [22][23][24][25][26][27]. The objective of the current study is to improve the biomechanical properties of ZM21 Mg alloy by ECAP for orthopaedic implant application.…”

Section: Introductionmentioning

confidence: 94%

Bio-corrosion impacts on mechanical integrity of ZM21 Mg for orthopaedic implant application processed by equal channel angular pressing

Sekar

Nyahale

Naik

et al. 2021

J Mater Sci: Mater Med

View full text Add to dashboard Cite

The mechanical integrity of rolled ZM21 Mg was improved by equal channel angular pressing (ECAP) to function as a potential biodegradable bone screw implant. Electron backscattered diffraction (EBSD) revealed deformed grains of 45 µm observed in rolled ZM21 Mg. They were transformed to equiaxed fine grains of 5.4 µm after 4th pass ECAP. The yield strength of rolled and ECAPed ZM21 Mg alloys were comparable. In contrast, 4th pass ZM21 Mg exhibited relatively higher elongation when compared to rolled sample. The mechanical properties of rolled and ECAPed ZM21 Mg were dependant on both grain refinement and crystallographic texture. The rolled and 4th pass ECAPed tensile samples exhibited nonlinear deterioration of mechanical properties when tested after 7, 14, 21 and 28 days immersion in Hank’s solution. The evaluation signifies that regardless their processing condition, ZM21 Mg alloys are suitable for surgical areas that requires high mechanical strength. In addition, the 4th pass ECAP samples were viable to MG-63 cells proving themselves to be promising candidates for future in vivo studies.

show abstract

“…Our research group has reported improved mechanical properties of AZ31 and AZ61 magnesium alloys by ECAP. Our recent study has proved that corrosion resistance of AZ80 magnesium alloy could be improved by tailoring the homogenization temperature and time attributed to the reduction and distribution of secondary phase particles acting as cathodic sites. In this study, an effort has been made to explore the galvanic corrosion behavior of as‐received (ASR) and ECAPed ZE41 magnesium alloy when coupled with Al7075 aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of resistance to galvanic corrosion of ZE41 Mg alloy by equal channel angular pressing

Sekar

Sanna

Desai

2019

Materials & Corrosion

View full text Add to dashboard Cite

The galvanic corrosion behavior of as‐received and ECAPed ZE41 Mg alloy coupled with Al7075 alloy is investigated using zero resistance ammeter in three different corrosive environments, 0, 0.1, and 1 M NaCl, to mimic the conditions experienced in engineering applications. The mechanism of galvanic corrosion for the ZE41 Mg–Al7075 aluminum alloy is explained. It is observed that a robust surface film containing a composite layer of oxide/hydroxide of magnesium and aluminum is established in deionized water (0 M). However, only a single layer of magnesium oxide/hydroxide is detected in chloride‐containing environments. Equal channel angular pressing (ECAP) improved the resistance to galvanic corrosion by 58% and 54% when compared with the as‐cast counterparts in 0 and 1 M NaCl solution, respectively. In contrast, galvanic corrosion resistance decreased by 26% in 0.1 M NaCl after ECAP while the as‐received samples evinced pits unfavorable to be used in engineering applications. ECAP is a promising method to combat galvanic corrosion encountered by ZE41 magnesium alloy used in automobiles and components of military vehicles.

show abstract

The impact of homogenization treatment on microstructure microhardness and corrosion behavior of wrought AZ80 magnesium alloys in 3.5 wt% NaCl solution

Cited by 19 publications

References 19 publications

Effect of ECAE Die Angle on Microstructure Mechanical Properties and Corrosion Behavior of AZ80/91 Magnesium Alloys

Effect of ECAE Die Angle on Microstructure Mechanical Properties and Corrosion Behavior of AZ80/91 Magnesium Alloys

Bio-corrosion impacts on mechanical integrity of ZM21 Mg for orthopaedic implant application processed by equal channel angular pressing

Enhancement of resistance to galvanic corrosion of ZE41 Mg alloy by equal channel angular pressing

Contact Info

Product

Resources

About