Influence of ECAP processing routes on microstructure mechanical properties and corrosion behavior of AZ80 Mg alloy

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

doi:10.1063/1.5093834

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…Gajanan et al compared the microstructure and mechanical properties of Mg alloys after passing through the B C and R (inversions per pass) routes at 390 isothermal conditions. The research shows that the R route has a better microstructure refinement effect; grain refinement and secondary phase distribution are more uniform, and the mechanical properties are better than those processed by the B C route [46]. Li et.al.…”

Section: Grain Size From 1 To 10 µMmentioning

confidence: 99%

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

et al. 2022

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Applications of a metallic material highly depend on its mechanical properties, which greatly depend on the material’s grain sizes. Reducing grain sizes by severe plastic deformation is one of the efficient approaches to enhance the mechanical properties of a metallic material. In this paper, severe plastic deformation of equal channel angular pressing (ECAP) will be reviewed to illustrate its effects on the grain refinement of some common metallic materials such as titanium alloys, aluminum alloys, and magnesium alloys. In the ECAP process, the materials can be processed severely and repeatedly in a designed ECAP mold to accumulate a large amount of plastic strain. Ultrafine grains with diameters of submicron meters or even nanometers can be achieved through severe plastic deformation of the ECAP. In detail, this paper will give state-of-the-art details about the influences of ECAP processing parameters such as passes, temperature, and routes on the evolution of the microstructure of metallic materials. The evolution of grain sizes, grain boundaries, and phases of different metallic materials during the ECAP process are also analyzed. Besides, the plastic deformation mechanism during the ECAP process is discussed from the perspectives of dislocation slipping and twinning.

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Section: Grain Size From 1 To 10 µMmentioning

confidence: 99%

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

et al. 2022

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“…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%

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

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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.

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“…Tong et al [ 26 ] present their experience with ECAP pressing of the Mg–Zn–Ca alloy and analyses the influence of ECAP routes on the Mg–Zn–Ca alloy microstructure and its mechanical properties. There have been many other studies investigating the influence of ECAP routes on the microstructure and mechanical properties of different materials; 3003 Al alloy was studied by Lee et al [ 27 ], pure Ti by Stolyarov et al [ 28 ] or AZ80 Mg alloy by Gajanan et al [ 29 ]. Nanostructured pure copper seems to be a very interesting material in many areas, mainly in electronics.…”

Section: Introductionmentioning

confidence: 99%

A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations

et al. 2021

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The formulation of the Hall–Petch relationship in the early 1950s has raised immense interest in studying the influence of the grain size of solid materials on their properties. Grain refinement can be achieved through extreme deformation. In the presented study, Equal-Channel Angular Pressing (ECAP) was successfully applied to produce an ultrafine-grained microstructure in a pure commercial Cu of 99.9 wt%. Samples were processed by ECAP at 21 °C for six passes via route A. A new equation of equilibrium that allows the exact determination of the number of extrusions and other technological parameters required to achieve the desired final grain size has been developed. The presented research also deals, in a relatively detailed and comparative way, with the use of ultrasound. In this context, a very close correlation between the process functions of extrusion and the speed of longitudinal ultrasonic waves was confirmed.

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Influence of ECAP processing routes on microstructure mechanical properties and corrosion behavior of AZ80 Mg alloy

Cited by 9 publications

References 9 publications

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

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

A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations

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