Influences of expanding angles on extrusion-shearing-expanding processing of AZ31 magnesium alloy thin-walled tubes

Tian, Ye; Huang, Hongjun; Liang, Peng-cheng; Ou, Zhongwen

doi:10.1007/s00170-021-07898-3

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…Studies have shown that the use of this technique makes it possible to reduce the grain size by more than six times as well as to increase the tensile strength, elongation, and microhardness of the deformed material. Hollow parts can be produced using modified forward extrusion methods [ 11 , 12 , 13 ]. The material flows through a variable geometry die cavity that is created between the mandrel and the die.…”

Section: Introductionmentioning

confidence: 99%

New Method for Detecting Flange Fracture Initiation in Incremental Radial Extrusion

Winiarski

2024

Materials

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This study investigates flange fracture formation in unconventional incremental radial extrusion. This manufacturing technique involves using rings with a gradually increasing inside diameter for constraining the free flow of material in the radial direction. As a result, the shaped flange has a constant thickness and a significantly larger diameter than that formed using the standard extrusion process conducted without the use of rings. EN AW 6060 aluminum alloy tube sections were used as the billet material, and the extrusion process was conducted under cold forming conditions at ambient temperature. For the determination of material fracture initiation, a new method was proposed involving the analysis of strain, strain rate and values of the normalized Cockcroft–Latham fracture criterion integral. The main advantage of the new method is that it allows for the prediction of fracture initiation via only FEM results analysis, i.e., it is not necessary to carry out additional experiments aimed at calibrating or determining limit parameters of a given material. It was shown that the occurrence of differences in the distribution of the above-mentioned parameters coincided with flange fracture initiation.

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Section: Introductionmentioning

confidence: 99%

New Method for Detecting Flange Fracture Initiation in Incremental Radial Extrusion

Winiarski

2024

Materials

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“…In such a case,Finite element(FE) simulation can play a unique role in gaining an understanding of the thermo-mechanical interactions which occur inside deforming material during extrusion. However, there is very few study on the simulation of Mg extrusion [9][10].…”

Section: Introductionmentioning

confidence: 99%

A New Method of Manufacturing Thin-Walled Tube Made of AZ61 Magnesium Alloy Including Direct Extrusion And Corrugated Equal Channel Angular Extrusion

Zhang

et al. 2021

Preprint

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Due to demand of strong toughness of thin walled tube, and good secondary forming properties and high-precision dimension, New plastic forming method should be researched to achieve a complete filling, uniform deformation and microstructure evolution during forming process.To obtain the deformation mechanisms of a new composite extrusion for thin walled tube fabricated by tube corrugated equal channel angular extrusion has been researched which is shorten as “TC-ECAE” in this paper. Finite element DEFORMTM-3D software to investigate the plastic deformation behavior of magnesium billet during TC-ECAE process has been employed. Computed parameters including workpiece material characteristics and process conditions have been taken into consideration. The pridictions of strains distributions and damage distributions and effective stress distributions and flow velocities distributions and microstructures evolutions have been explored. The results proved that the TC-ECAE process is a forming method for magnesium alloy tube which is suitable for large scale industrial application. The TC-ECAE process would cause serve plastic deformation and improve the dynamic recrystallization of magnesium alloy during TC-ECAE process.

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A new method of processing magnesium alloy thin-walled tube by direct extrusion and corrugated equal channel angular extrusion

Zhang

Huang

Gang

et al. 2022

Int J Adv Manuf Technol

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Influences of expanding angles on extrusion-shearing-expanding processing of AZ31 magnesium alloy thin-walled tubes

Cited by 7 publications

References 13 publications

New Method for Detecting Flange Fracture Initiation in Incremental Radial Extrusion

New Method for Detecting Flange Fracture Initiation in Incremental Radial Extrusion

A New Method of Manufacturing Thin-Walled Tube Made of AZ61 Magnesium Alloy Including Direct Extrusion And Corrugated Equal Channel Angular Extrusion

A new method of processing magnesium alloy thin-walled tube by direct extrusion and corrugated equal channel angular extrusion

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