Microstructure and mechanical properties of AZ91 magnesium alloy developed by Spark Plasma Sintering

Mondet, Mathieu; Barraud, Elodie; Lemonnier, Sébastien; Guyon, Julien; Allain-Bonasso, Nathalie; Grosdidier, Thierry

doi:10.1016/j.actamat.2016.08.006

Cited by 114 publications

(55 citation statements)

References 43 publications

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“…In comparison with the YCS value reduction of 8.7%, the UCS value decreased 3.9%. It relates to the improvement of the hardening capability . When the AGAed powder mass fraction increased to 20%, the hardening capability increased from 0.53 to 0.61.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the enhanced ductility of the bimodal grain structure Ti–22A–25Nb alloy relates to the reduction of inter‐particle boundary surface. Generally, the alloys fabricated by SPS show extremely poor ductility due to poor inter‐particle cohesion . The finer the grain size, the larger the inter‐particle boundary surface and more obvious this defect.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced Ductility of a Bimodal Grain Structure Ti–22Al–25Nb Alloy Fabricated by Spark Plasma Sintering

Sim

Wang

Li³

et al. 2017

Adv Eng Mater

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A bimodal grain structure Ti-22Al-25Nb alloy with enhanced ductility is fabricated from the blended powder mixture of argon gas atomized powder and mechanically alloyed powder by spark plasma sintering. The microstructure of the bimodal grain structure Ti-22Al-25Nb alloy and the effects of the argon gas atomized powder mass fraction on the compression properties are investigated. This alloy shows the bimodal microstructure, which the coarse grain regions are surrounded by the ultrafine grained matrix. Compared with the Ti-22Al-25Nb alloy sintered from 100% mechanically alloyed powder, this alloy sintered from the blended powder mixture containing 20% argon gas atomized powder exhibits the fracture elongation to improve 20.5%.1600804 (1 of 8)

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Enhanced Ductility of a Bimodal Grain Structure Ti–22Al–25Nb Alloy Fabricated by Spark Plasma Sintering

Sim

Wang

Li³

et al. 2017

Adv Eng Mater

View full text Add to dashboard Cite

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“…Muhammad et al [183] and Guan et al [184] investigated AZ31 FAST consolidation between 350 and 450°C, achieving densities of 97-99%. Mondet et al [185] FAST processed AZ91 powder between 310 and 500°C, showing higher compressive strength compared to conventionally cast AZ91 in the T6 condition. However, to ensure full diffusion bonding and reasonable tensile ductility they found it essential to break down the oxide layer on the AZ91 powder surface by mechanical milling before FAST.…”

Section: Single Materials Systemsmentioning

confidence: 99%

Processing metal powders via field assisted sintering technology (FAST): A critical review

Weston

Thomas

Jackson

2019

Materials Science and Technology

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The current status of field assisted sintering technology (FAST) of structural metals from powder is critically reviewed. Recently, there have been significant increases in the uptake of FAST for metallic systems, composites and porous materials at the laboratory-scale. It is clear that FAST is tolerant of powder/particulate feedstock, allowing rapid production of materials, some of which would be challenging through conventional sintering techniques. Yet, the underlying mechanisms allowing this are not fully understood. Final specimen sizes tend to be small, which restricts rigorous mechanical assessment. This review demonstrates the clear benefits in transitioning laboratory-scale demonstrators to the industrial scale over the next few years. However, consideration will need to be given to size, throughput, and shape complexities to attract commercial investment.

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“…The holding times were 10, 20, 30, and 45 min, while the pressure was maintained at 30 MPa. In the present work, the heating rate of 30 • C /min was introduced [26]. After heating and temperature preservation, the samples were cooled in a furnace.…”

Section: Microstructure Analysis and Mechanical Propertiesmentioning

confidence: 99%

The Microstructure Evolution and Mechanical Properties of TiBw/TA15 Composite with Network Structure Prepared by Rapid Current Assisted Sintering

Wang

et al. 2019

Metals

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TiBw/TA15 (TA15 alloy reinforced by TiB whiskers) composites with network microstructures were successfully prepared by current-assisted sintering at 1100 °C for 10 min. The influence of the sintering parameters on the microstructures of obtained composites was investigated. The sintering temperature was the main factor affecting the average aspect ratio of TiBw, and the average diameter of TiBw could be controlled for various sintering conditions. Yield strength, ultimate compressive strength, and plastic strain at ambient temperature are 1172.5 MPa, 1818.4 MPa, and 22.4% for the TiBw/TA15 composites, respectively. Moreover, yield strength of the composites at 600 °C is 616.3 MPa, which is 26.1% higher than that of the TA15 titanium alloy. The effect of the TiBw on the microstructure evolution for the alloy matrix was discussed in detail. The strengthening mechanism of the TiBw/TA15 composites with network microstructure was attributed to the microstructure modification induced by TiBw, load bearing effect, and dislocation strengthening effect of the TiBw.

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Microstructure and mechanical properties of AZ91 magnesium alloy developed by Spark Plasma Sintering

Cited by 114 publications

References 43 publications

Enhanced Ductility of a Bimodal Grain Structure Ti–22Al–25Nb Alloy Fabricated by Spark Plasma Sintering

Enhanced Ductility of a Bimodal Grain Structure Ti–22Al–25Nb Alloy Fabricated by Spark Plasma Sintering

Processing metal powders via field assisted sintering technology (FAST): A critical review

The Microstructure Evolution and Mechanical Properties of TiBw/TA15 Composite with Network Structure Prepared by Rapid Current Assisted Sintering

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