The effects of homogenization treatment on wear resistance of AZ61 magnesium alloy fabricated by extrusion-shear process

Hu, Hong; Yuan, Ying; Ou, Zhongwen; Wang, X. Q.

doi:10.1007/s00339-017-1387-2

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…Recently, usage of Mg based materials has increased in transport and aerospace industries due to above mentioned properties. However, Mg has poor formability as well as higher electrochemical activity thus decreased corrosion resistance which slows down its widespread application in various industrial sectors [1][2][3]. Consequently, enlightening the corrosion resistance and formability behaviour of Mg becomes a vital topic for the experts and researchers working in the area of Mg. Several investigators are perceived that the addition of effective alloying elements will improve the corrosion resistance and formability of Mg to achieve its wider range of applications.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical corrosion behaviour of rolled dual phase Mg-8Li-graphene composite

Kavimani,

Vignesh,

Kumar

et al. 2023

Surf. Topogr.: Metrol. Prop.

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In this research, the effect of interrupted rolling on electrochemical corrosion behaviour of Mg-8Li-xGr composite is investigated. Graphene reinforced composite was developed by using stir casting route and rolled with different reductions in thickness of 50, 75 and 90%. Investigation on potentiodynamic polarization of rolled composite depicts that increase in reduction percentage increases the corrosion rate of the developed composite. Electrochemical impedance studies reveal that composite reduced at 50 % thickness exhibits higher charge transfer resistance of 80 cm2. Nyquist plot depicts occurrence of inductance loop that reveals occurrence of oxide layer breakage. Addition of graphene up to 0.4 wt. % increase the corrosion resistance and further addition exhibits adverse effect in corrosion behaviour due to the galvanic effects. The occurrence of pitting corrosion is evidenced from corrosion surface morphology.

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Section: Introductionmentioning

confidence: 99%

Electrochemical corrosion behaviour of rolled dual phase Mg-8Li-graphene composite

Kavimani,

Vignesh,

Kumar

et al. 2023

Surf. Topogr.: Metrol. Prop.

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“…At low loads, the wear rates rise linearly with the sliding speed before they reach a steady state. At higher loads, a sudden change in wear rate occurs in a sliding speed range [45,46]. Ageing at 250 °C in the WE 54 alloy leads to a four-fold decrease in volumetric wear, a three-fold decrease in linear wear and ∼20% reduction in coefficient of friction [47].…”

Section: Introductionmentioning

confidence: 99%

Notch tensile and dry sliding wear studies on Mg-Nd-Gd-Zn alloy

Soundararajan¹,

Liyakath²,

Srinidhi³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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This main purpose of the present research is to investigate the properties of wear and tensile in smooth and notch conditions of the heat-treated Mg-Nd-Gd-Zn alloy. The material applications such as complex helicopter gear box casing, piston and brake actuating components demands tensile data in notch conditions and wear characterizations. The alloy was characterized for microstructure, hardness, tensile properties in smooth and notch conditions and tribological properties such as wear resistance and friction coefficient. The microstructure examination revealed equiaxed grain structure with the size of about 42μm. The XRD results confirms the presence of Mg3 (Nd) precipitates. Smooth and notched samples were evaluated to determine the effect of notch radii and ductile-brittle transition. Notched samples show 25.31% improvements in strength compared to the smooth sample with the marginal reduction in ductility (1.3-1.8%). The fractography results for notched specimens exhibited cleavage, intergranular mode whereas the smooth specimens exhibited quasi cleavage, inter and transgranular modes. At 10N, the wear rate and friction coefficient change from 8.83 x 10-5 mm3/min to 7.11 x 10-5 mm3/min (24.2%) and to 0.29 and 0.26 (11.5%) respectively when the sliding velocity increases from 1 to 5 m/s. Similarly, at 20N, the wear rate and friction coefficient change from 9.11 x 10-5 mm3/min to 0.75 x 10-6 mm3/min (12.7%) and 0.29 to 0.23 (26.1%) respectively when the sliding velocity increases from 1 to 5 m/s. With the increase of load, plastic deformation is dominant controlling the wear rate. With the increase of sliding speed, oxidation is dominant controlling the wear rate and friction coefficient. Mixed modes of wear mechanisms such as abrasion, oxidation, delamination, third body assisted wear and melt wear were observed.

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The corrosion behavior of AZ91 bulk alloy and thin films

Yang,

Du,

et al. 2024

ACMM

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Purpose The purpose of this study is to campare the corrosion behavior of Az91 films and bulk sample, in the objective to provide reference for the corrosion resistance improvement of Mg alloys. Design/methodology/approach AZ91 films with various thickness values are produced by magnetron sputtering technique, and the corrosion behavior was characterized by immersion tests and electrochemical measurements. Findings The AZ91 films exhibited a preferred orientation with basal planes parallel to the surface and increased densification with the increase of thickness, and a superior corrosion resistance for the AZ91 films compared with the bulk sample. Originality/value The preferred (0002) basal planes in AZ91 films benefited the corrosion resistance and the nanoscale AZ91 films facilitated the development of a dense passivation film. Consequently, AZ91 film exhibited a superior corrosion resistance.

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The effects of homogenization treatment on wear resistance of AZ61 magnesium alloy fabricated by extrusion-shear process

Cited by 3 publications

References 22 publications

Electrochemical corrosion behaviour of rolled dual phase Mg-8Li-graphene composite

Electrochemical corrosion behaviour of rolled dual phase Mg-8Li-graphene composite

Notch tensile and dry sliding wear studies on Mg-Nd-Gd-Zn alloy

The corrosion behavior of AZ91 bulk alloy and thin films

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