Application of the Hot Press Method to Produce New Mg Alloys: Characterization, Mechanical Properties, and Effect of Al Addition

Erçetin, Ali

doi:10.1007/s11665-021-05814-0

Cited by 24 publications

(9 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the inability to obtain any peak of the Zn alloy element in the matrix in the XRD analysis was attributed to this situation. In similar literature studies [15,31,54], no peak could be detected in XRD analyses when the Zn content added to magnesium was less than 4 wt.%. After the Mg2Zn-xAl2O3 composite specimens were produced through hot pressing method, XRD analysis was applied to all specimens to determine phases in the microstructure.…”

Section: Sem and Eds Analysis Of Specimens Before Immersionsupporting

confidence: 58%

Section: Sem and Eds Analysis Of Specimens Before Immersionsupporting

confidence: 58%

“…In addition, fine-grained structures are thought to be effective in the development of tensile strength of specimens. It has also been stated in previous studies[31,47] that hard structures, which are densely located at the grain boundaries, act as barriers and make dislocation movements difficult. According to the literature[64], it may be also attributable to synergetic strengthening mechanisms including difference in elastic modulus strengthening, load-transfer strengthening, and difference in thermal expansion strengthening.…”

mentioning

confidence: 72%

“…New Mg alloys with improved mechanical and corrosion properties have been produced by adding Al [28], Zn [29], Ca [30], Sn, and Mn [31] and various alloying elements to Mg [32]. However, for some applications, Mg alloys may still be insufficient.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Erçetin

Pimenov

2021

Materials

Self Cite

View full text Add to dashboard Cite

Powder metallurgy (PM) method is one of the most effective methods for the production of composite materials. However, there are obstacles that limit the production of magnesium matrix composites (MgMCs), which are in the category of biodegradable materials, by this method. During the weighing and mixing stages, risky situations can arise, such as the exposure of Mg powders to oxidation. Once this risk is eliminated, new MgMCs can be produced. In this study, a paraffin coating technique was applied to Mg powders and new MgMCs with superior mechanical and corrosion properties were produced using the hot pressing technique. The content of the composites consist of an Mg2Zn matrix alloy and Al2O3 particle reinforcements. After the debinding stage at 300 °C, the sintering process was carried out at 625 °C under 50 MPa pressure for 60 min. Before and after the immersion process in Hank’s solution, the surface morphology of the composite specimens was examined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis. With the hot pressing technique, composite specimens with a very dense and homogeneous microstructure were obtained. While Al2O3 reinforcement improved the mechanical properties, it was effective in changing the corrosion properties up to a certain extent (2 wt.% Al2O3). The highest tensile strength value of approximately 191 MPa from the specimen with 8 wt.% Al2O3. The lowest weight loss and corrosion rate were obtained from the specimen containing 2 wt.% Al2O3 at approximately 9% and 2.5 mm/year, respectively. While the Mg(OH)2 structure in the microstructure formed a temporary film layer, the apatite structures containing Ca, P, and O exhibited a permanent behavior on the surface, and significantly improved the corrosion resistance.

show abstract

Section: Sem and Eds Analysis Of Specimens Before Immersionsupporting

confidence: 58%

Section: Sem and Eds Analysis Of Specimens Before Immersionsupporting

confidence: 58%

mentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Erçetin

Pimenov

2021

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…The addition of Ca, Mn, and Sn elements to Mg alloys (Mg-9Al and AZ31) refines grain structures and thereby enhances corrosion resistance [30]. The addition of Al and Sn improves the ductility in powder metallurgy parts [31,36]. The literature review confirmed that the appropriate control of microstructure with alloy selection and processing methods resulted in better properties, i.e., hardness [7], strength [27,43], wear resistance [38], and corrosion resistance [30], in Mg and its alloys.…”

Section: Introductionmentioning

confidence: 99%

Image Processing of Mg-Al-Sn Alloy Microstructures for Determining Phase Ratios and Grain Size and Correction with Manual Measurement

et al. 2021

Self Cite

View full text Add to dashboard Cite

The study of microstructures for the accurate control of material properties is of industrial relevance. Identification and characterization of microstructural properties by manual measurement are often slow, labour intensive, and have a lack of repeatability. In the present work, the intermetallic phase ratio and grain size in the microstructure of known Mg-Sn-Al alloys were measured by computer vision (CV) technology. New Mg (Magnesium) alloys with different alloying element contents were selected as the work materials. Mg alloys (Mg-Al-Sn) were produced using the hot-pressing powder metallurgy technique. The alloys were sintered at 620 °C under 50 MPa pressure in an argon gas atmosphere. Scanning electron microscopy (SEM) images were taken for all the fabricated alloys (three alloys: Mg-7Al-5Sn, Mg-8Al-5Sn, Mg-9Al-5Sn). From the SEM images, the grain size was counted manually and automatically with the application of CV technology. The obtained results were evaluated by correcting automated grain counting procedures with manual measurements. The accuracy of the automated counting technique for determining the grain count exceeded 92% compared to the manual counting procedure. In addition, ASTM (American Society for Testing and Materials) grain sizes were accurately calculated (approximately 99% accuracy) according to the determined grain counts in the SEM images. Hence, a successful approach was proposed by calculating the ASTM grain sizes of each alloy with respect to manual and automated counting methods. The intermetallic phases (Mg17Al12 and Mg2Sn) were also detected by theoretical calculations and automated measurements. The accuracy of automated measurements for Mg17Al12 and Mg2Sn intermetallic phases were over 95% and 97%, respectively. The proposed automatic image processing technique can be used as a tool to track and analyse the grain and intermetallic phases of the microstructure of other alloys such as AZ31 and AZ91 magnesium alloys, aluminium, titanium, and Co alloys.

show abstract

Effects of Substitution of Cu with Ni on Microstructure and Mechanical Properties of Mg-Er-Cu Alloy

Zhang

et al. 2021

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Application of the Hot Press Method to Produce New Mg Alloys: Characterization, Mechanical Properties, and Effect of Al Addition

Cited by 24 publications

References 34 publications

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Image Processing of Mg-Al-Sn Alloy Microstructures for Determining Phase Ratios and Grain Size and Correction with Manual Measurement

Effects of Substitution of Cu with Ni on Microstructure and Mechanical Properties of Mg-Er-Cu Alloy

Contact Info

Product

Resources

About