scholarly journals Characterization of AlSi10Mg- CP-Ti Metal-metal Composite Materials Produced by Electro-sinter-forging

2021 ◽  
Author(s):  
Federico Simone Gobber ◽  
Elisa Fracchia ◽  
Ildiko Peter ◽  
Alessandro Fais ◽  
Marco Actis Grande
Keyword(s):  
Synergistic Effects ◽  
Wire Drawing ◽  
Metal Composite ◽  
Metal Composites ◽  
Mechanical And Electrical Properties ◽  
Sinter Forging ◽  
Metal Metal ◽  
Massive Phase ◽  
Cp Ti ◽  
Compositional Properties

Metal/metal composites represent a particular class of materials showing innovative mechanical and electrical properties. Conventionally, such materials are produced by severely plastically deforming two ductile phases via rolling or extruding, swaging, and wire drawing. This study presents the feasibility of producing metal/metal composites via a capacitive discharge-assisted sintering process named electro-sinter-forging. Two different metal/metal composites with CP-Ti/AlSi10Mg ratios (20/80 and 80/20 %vol) are evaluated, and the effects of the starting compositions on the microstructural and compositional properties of the materials are presented. Bi-phasic metal/metal composites constituted by isolated α-Ti and AlSi10Mg domains with a microhardness of 113 ± 13 HV0.025 for the Ti20-AlSi and 244 ± 35 HV0.025 for the Ti80-AlSi are produced. The effect of the applied current is crucial to obtain high theoretical density, but too high currents may result in Ti dissolution in the Ti80-AlSi composite. Massive phase transformations due to the formation of AlTiSi based intermetallic compounds are observed through thermal analysis and confirmed by morphological and compositional observation. Finally, a possible explanation for the mechanisms regulating densification is proposed accounting for current and pressure synergistic effects.

scholarly journals Characterization of AlSi10Mg-CP-Ti Metal/Metal Composite Materials Produced by Electro-Sinter-Forging

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1645
Author(s):  
Federico Simone Gobber ◽  
Elisa Fracchia ◽  
Alessandro Fais ◽  
Ildiko Peter ◽  
Marco Actis Grande
Keyword(s):  
Synergistic Effects ◽  
Wire Drawing ◽  
Metal Composite ◽  
Metal Composites ◽  
Mechanical And Electrical Properties ◽  
Sinter Forging ◽  
Metal Metal ◽  
Massive Phase ◽  
Cp Ti ◽  
Compositional Properties

Metal–metal composites represent a particular class of materials showing innovative mechanical and electrical properties. Conventionally, such materials are produced by severely plastically deforming two ductile phases via rolling or extruding, swaging, and wire drawing. This study presents the feasibility of producing metal–metal composites via a capacitive discharge-assisted sintering process named electro-sinter-forging. Two different metal–metal composites with CP-Ti/AlSi10Mg ratios (20/80 and 80/20 vol.%) are evaluated, and the effects of the starting compositions on the microstructural and compositional properties of the materials are presented. Bi-phasic metal–metal composites constituted by isolated α-Ti and AlSi10Mg domains with a microhardness of 113 ± 13 HV0.025 for the Ti20-AlSi and 244 ± 35 HV0.025 for the Ti80-AlSi are produced. The effect of the applied current is crucial to obtain high theoretical density, but too high currents may result in Ti dissolution in the Ti80-AlSi composite. Massive phase transformations due to the formation of AlTiSi-based intermetallic compounds are observed through thermal analysis and confirmed by morphological and compositional observation. Finally, a possible explanation for the mechanisms regulating densification is proposed accounting for current and pressure synergistic effects.

scholarly journals Wear and Corrosion Resistance of AlSi10Mg–CP–Ti Metal–Metal Composite Materials Produced by Electro-Sinter-Forging

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6761
Author(s):  
Federico Simone Gobber ◽  
Elisa Fracchia ◽  
Roberto Spotorno ◽  
Alessandro Fais ◽  
Diego Manfredi
Keyword(s):  
Corrosion Resistance ◽  
Composite Materials ◽  
Single Pulse ◽  
Processing Parameters ◽  
Metal Composite ◽  
Metal Composites ◽  
Sinter Forging ◽  
Wear And Corrosion ◽  
Metal Metal ◽  
Potential Applications

Metal–metal composites are a class of composite materials studied for their high ductility and strength, but their potential applications are currently limited by the complex manufacturing processes involved. Electro-sinter-forging (ESF) is a single-pulse electro discharge sintering technique that proved its effectiveness in the rapid sintering of several metals, alloys, and composites. Previous studies proved the processability of Ti and AlSi10Mg by ESF to produce metal–metal composites and defined a correlation between microstructure and processing parameters. This paper presents the wear and corrosion characterizations of two metal–metal composites obtained via ESF with the following compositions: 20% Ti/80% AlSi10Mg and 20% AlSi10Mg/80% Ti. The two materials showed complementary resistance to wear and corrosion. A higher fraction of AlSi10Mg is responsible for forming a protective tribolayer in dry-sliding conditions, while a higher fraction of Titanium confers improved corrosion resistance due to its higher corrosion potential.

Crack propagation behavior of inhomogeneous laminated Ti−Nb metal−metal composite

2019 ◽  
Vol 29 (9) ◽  
pp. 1882-1888 ◽  
Author(s):  
Wen-juan CHENG ◽  
Yong LIU ◽  
Da-peng ZHAO ◽  
Bin LIU ◽  
Yan-ni TAN ◽  
...  
Keyword(s):  
Crack Propagation ◽  
Metal Composite ◽  
Propagation Behavior ◽  
Metal Metal ◽  
Crack Propagation Behavior

Modeling the electrical resistivity of deformation processed metal–metal composites

2014 ◽  
Vol 77 ◽  
pp. 151-161 ◽  
Author(s):  
Liang Tian ◽  
Iver Anderson ◽  
Trevor Riedemann ◽  
Alan Russell
Keyword(s):  
Electrical Resistivity ◽  
Metal Composites ◽  
Metal Metal

Biomimetic Applications of Ionic Polymer Metal Composites (IPMC) Actuators - A Critical Review

2014 ◽  
Vol 20 ◽  
pp. 1-10 ◽  
Author(s):  
Muhammad Farid ◽  
Zhao Gang ◽  
Tran Linh Khuong ◽  
Zhuang Zhi Sun ◽  
Naveed Ur Rehman ◽  
...  
Keyword(s):  
Critical Review ◽  
Low Voltage ◽  
Metal Composite ◽  
Ionic Polymer Metal Composite ◽  
Metal Composites ◽  
Ionic Polymer Metal Composites ◽  
Ionic Polymer ◽  
Design And Manufacturing ◽  
Polymer Metal ◽  
Biomedical Field

Biomimetic is the field of engineering in which biological creatures and their functions are investigated and are used as the basis for the design and manufacturing of machines. Ionic Polymer Metal Composite (IPMC) is a smart material which has demonstrated a meaningful bending and tip force after the application of a low voltage. It is light-weighted, flexible, easily actuated, multi-directional applicable and requires simple manufacturing. Resultantly, IPMC has attracted scientists and researchers to analyze it further and consider it for any industrial and biomimetic applications. Presently, the research on IPMC is bi-directional oriented. A few groups of researchers are busy to find out the causes for the weaknesses of the material and to find out any remedy for them. The second class of scientists is exploring new areas of applications where IPMC material can be used. Although, the application zone of IPMC is ranging from micropumps diaphragms to surgical holding devices, this paper provides an overview of the IPMC application in biomimetic and biomedical field.

scholarly journals Powder metallurgical Ti-Mg metal-metal composites facilitate osteoconduction and osseointegration for orthopedic application

2019 ◽  
Vol 4 ◽  
pp. 37-42 ◽  
Author(s):  
Sihui Ouyang ◽  
Qianli Huang ◽  
Yong Liu ◽  
Zhengxiao Ouyang ◽  
Luxin Liang
Keyword(s):  
Metal Composites ◽  
Metal Metal
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